MedWorm: Dentistry

Reflection on the teaching of Cariology in Brazil

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

(Source: Brazilian Oral Research)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

The prevalence of elder abuse in the Porto Alegre metropolitan area

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

Abuse of the elderly is a form of violence to come to the public's attention. Dental professionals are in an ideal position to identify physical abuse. The aim of this study was to assess the prevalence of elderly abuse and analyze the database of injury reports that can be identified by dental teams. A documentary analysis study developed by the Elderly Protection Police Station of Porto Alegre, Rio Grande do Sul, was carried out. The information used came from 2,304 complaints filed at the aforementioned institution between the years of 2004 and 2006. The records of abuse are categorized as injury, neglect, mistreatment, theft, financial abuse, threat, disturbing the peace, atypical fact, and others. The injuries that could be identified by the dental team were classified according to th...

Association between self-rated oral appearance and the need for dental prostheses among elderly Brazilians

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

We investigated the association between poor self-rated oral appearance and the need for dental prostheses among elderly Brazilians. National data from an epidemiological survey on oral health in Brazil conducted from 2002 to 2003 by the Ministry of Health (SB, Brazil) with a multistage random sample of 4,839 individuals aged 65–74 years in 250 towns were analyzed. The dependent variable was self-rated oral appearance, dichotomized into “poor” (poor∕very poor) and “good” (fair∕good∕very good). The main independent variable was the need for an upper or lower dental prosthesis. Other variables included sociodemographic characteristics, approach to dental care, oral health conditions, and self-reported oral disadvantage. Data were analyzed using the chi-square test and Poisson...

Effect of a cordless retraction paste on titanium surface: a topographic, chemical and biocompatibility evaluation

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

Good exposure of the preparation margins and haemostasis in the sulcular gingiva are necessary for accurate impressions to produce precise restorations. The use of cordless retraction paste material in implant dentistry is a relatively novel application. However, few studies have been conducted on the use of retraction pastes and their possible interaction with implant surfaces. Recent literature has described remnants on titanium implant surfaces and expressed the need for an assessment of the biocompatibility of the exposed surface (Chang et al.). This in vitro study evaluated the effect of a cordless gingival retraction paste on sterile titanium disks. Surface chemistry was determined using energy-dispersive X-ray spectroscopy (EDS), and further investigated using laser ablation inducti...

Effect of chlorhexidine on the bond strength of a self-etch adhesive system to sound and demineralized dentin

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

This study evaluated the effect of a 2% chlorhexidine-based disinfectant (CHX) on the short-term resin-dentin bond strength of a self-etch adhesive system to human dentin with different mineral contents. Dentinal mineralization was tested at 4 levels (sound, and after 2, 4, or 8 days of demineralization-remineralization cycles) and disinfectant at 2 levels [deionized water (DW, negative control) and CHX]. Dentin demineralization induced by pH-cycling was characterized by cross-sectional hardness (CSH). Each dentin surface was divided into halves, one treated with DW and the other with CHX (5 minutes). Each surface was bonded with a self-etch adhesive system and restored. The specimens were sectioned and subjected to microtensile bond testing. CSH and microtensile bond strength (µTBS) da...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Evaluation of bone alterations in the jaws of HIV-infected menopausal women

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

The advent of highly active antiretroviral therapy (HAART) has caused a reduction in mortality, thus contributing to an increase in the number of women with HIVࢧAIDS who reach the climacteric period, experience decline in ovarian function, and develop complications of viral infection and HAART, which can accelerate bone loss. The aim of this study was to detect possible alterations in the jaws of HIV-infected women by panoramic radiography. The study comprised a total of 120 women above 40 years of age who were divided into the following two groups: women who are HIV positive (Group I) and women with no known HIV infection (Group II). Measurement of the following three radiomorphometric indexes was performed by panoramic radiography: Mental Index (MI), Panoramic Mandibular Index (PMI) an...

Influence of disinfectant solutions on test materials used for the determination of masticatory performance

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

In conclusion, disinfection did not alter the reliability of the test materials for the MP calculation for up to 60 days. (Source: Brazilian Oral Research)

Radiodensitometric and DXA analyses for the measurement of bone mineral density after systemic alendronate therapy

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

In conclusion, both of the methods were able to detect an increase in BMD of the proximal tibial metaphysis after alendronate therapy. (Source: Brazilian Oral Research)

Factors contributing to the surgical retreatment of mandibular fractures

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

The purpose of this retrospective study was to evaluate contributing factors in patients requiring surgical retreatment of mandibular fractures. Of all the patients with mandibular fractures who were treated using internal fixation at a trauma hospital over a seven-year period, 20 patients (4.7%) required a second surgery and thus composed the “reoperated” group. The control group comprised 42 consecutive patients with mandibular fractures who were treated at the same clinic and who healed without complications. Medical charts were reviewed for gender, age, substance abuse history, dental condition, etiology, location of fracture, degree of fragmentation, fracture exposure, teeth in the fracture line, associated facial fractures, polytrauma, time elapsed between trauma and initial trea...

Comparative analysis of preemptive analgesic effect of dexamethasone and diclofenac following third molar surgery

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

The objective of the study was to compare the analgesic effectiveness of dexamethasone and diclofenac sodium administered preemptively after surgical removal of third molars. Forty-four ASA (American Society of Anesthesiologists) I patients (19 men, 35 women; 16–28 years old) randomly and double-blindly received diclofenac sodium (50 mg) or dexamethasone (8 mg) or placebo 1 h before surgery. Intensity of pain, measured with a visual analog scale (VAS), was the variable studied at different postoperative times (1 h, 2 h, 3 h, 6 h, 8 h, 12 h, 48 h, 4 d and 7 d). The total amount of rescue medication (TARM) ingested (paracetamol) was another variable of the study. The Kruskal-Wallis statistical test was used. A p value of < .05 was adopted to reject the null hypot...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Relationship among oral habits, orofacial function and oral health-related quality of life in children

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

The objective was to evaluate the relationship among oral habits, oral function and oral health-related quality of life (OHRQoL) in children. Three hundred and twenty-eight subjects (8–14 years old) were assessed for orofacial function using the Brazilian version of the Nordic Orofacial Test-Screening (NOT-S). OHRQoL was assessed using the Child Perceptions Questionnaires (Brazilian versions) for the 8–10 (CPQ8-10) and 11–14 (CPQ11-14) year age groups. The subjects were distributed into a Habit group and a Habit-free group according to domain III (Habits) of the NOT-S. Oral habits were present in 71.3% of the sample (p = .0001), with a higher prevalence in females (62.8%, p = .001). The NOT-S, CPQ8-10 and CPQ11-14 scores were higher in the Habit group (P = .0001, P = .009 and p = .00...

Efficacy of 1.23% APF gel applications on incipient carious lesions: a double-blind randomized clinical trial

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

The aim of this double-blind randomized clinical trial was to evaluate the efficacy of 1.23% APF gel application on the arrest of active incipient carious lesions in children. Sixty 7- to 12-year-old children, with active incipient lesions were included in the study. Children were divided randomly into 2 groups: 1.23% APF gel and placebo gel applications. Each group received 8 weekly applications of treatment. The lesions were re-evaluated at the 4th and 8th appointments. Poisson regression analysis was used to estimate relative risks of the presence of active white spot lesions. Groups showed similar results (PR = 1.67; CI 95% 0.69–3.98). The persistence of at least 1 active lesion was associated with a higher number of lesions in the baseline (PR = 2.67; CI 95% 1.19–6.03), but not wi...

Influence of photo-activation source on enamel demineralization around restorative materials

Brazilian Oral Research — Tue, 14 May 2013 21:15:47 +0100

This study evaluated the effects of the photoactivation source and restorative material on the development of caries-like lesions on human enamel after an in vitro pH challenge. Enamel cavities were prepared in 36 blocks, which were assigned to two groups according to the restorative material: resin-modified glass ionomer (RMGI) and composite resin (CR). Samples were exposed to quartz-tungsten-halogen lamp, argon-ion laser, or light-emitting diode (n = 6). The Knoop microhardness (KHN) values of the top surface of all materials were evaluated. Restored enamel blocks were thermocycled and subjected to 10 demineralization-remineralization cycles at 37°C. KHN analysis of the superficial enamel was performed by four indentations located 100 mm from the restoration margin. The material KHN was...

Apical extrusion of debris: A literature review of an inherent occurrence during root canal treatment

International Endodontic Journal — Tue, 14 May 2013 21:12:22 +0100

A randomised trial of a simplified method for complete denture fabrication: patient perception and quality

Journal of Oral Rehabilitation — Tue, 14 May 2013 21:12:08 +0100

This study compared a simplified method for complete denture fabrication to a conventional protocol in terms of oral health‐related quality of life (OHRQoL), patient satisfaction and denture quality. Forty‐two edentulous patients requesting treatment with complete dentures were randomly allocated into two study groups. Group S received dentures fabricated by a simplified method and Group C received conventionally fabricated dentures. Before interventions and after three and 6 months following insertion, OHRQoL and patient satisfaction were analysed by specific instruments. A prosthodontist assessed denture quality 3 months after delivery. Groups presented no difference for OHRQoL, denture quality and general satisfaction. Differences regarding patient satisfaction with some aspects o...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Evaluation of scaling and root planing effect in generalized chronic periodontitis by fractal and multifractal analysis

Journal of Periodontal Research — Tue, 14 May 2013 21:10:28 +0100

ConclusionIt has been shown that fractal and multifractal analysis of tissue images as a non‐invasive technique could be used to measure contrasting morphologic changes within human gingival cells and tissues and can provide detailed information for investigation of healthy and diseased gingival mucosa from patients with GCP. (Source: Journal of Periodontal Research)

A Web-Assisted Tobacco Quality Improvement InterventionA Web-Assisted Tobacco Quality Improvement Intervention

Medscape Today Headlines — Tue, 14 May 2013 16:00:00 +0100

Can an online educational intervention provided by dentists help patients quit tobacco use -- and remain tobacco-free? BMC Oral Health (Source: Medscape Today Headlines)

Fractographic analyses of all-ceramic crowns: A study of 27 clinically fractured crowns

Dental Materials — Tue, 14 May 2013 06:10:12 +0100

Abstract: Objectives: The use of all-ceramic restorations has been steadily increasing in the decades since the introduction of high-strength core ceramics as an alternative to metal cores. Even with high-strength ceramic cores, the crowns are susceptible to fractures during clinical function, probably the major concern associated with all-ceramic restorations. The aim of this study was to analyze fracture features of clinically fractured crowns in order to determine crack initiation sites and crack propagation paths.Methods: Fractographic methods were used to analyze 27 all-ceramic full coverage crowns with alumina cores and feldspatic veneering ceramic. The fractured crowns were supplied by dentists in private and public practices with information of type of cement and time in function i...

The relationship between root concavities in first premolars and chronic periodontitis

Journal of Periodontal Research — Tue, 14 May 2013 04:00:00 +0100

ConclusionRoot concavities of the first premolars were associated with periodontal disease, and the type of interproximal alveolar bone defect. Root concavities may be important in contributing to local periodontal disease of the first premolars. (Source: Journal of Periodontal Research)

Assessment of the quality of reporting in abstracts of systematic reviews with meta‐analyses in periodontology and implant dentistry

Journal of Periodontal Research — Tue, 14 May 2013 04:00:00 +0100

ConclusionAbstracts of SRs with meta‐analyses in periodontology and implant dentistry currently have no uniform standard of reporting, which may hinder readers’ understanding of study outcomes. (Source: Journal of Periodontal Research)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

No evidence of triclosan‐resistant bacteria following long‐term use of triclosan‐containing toothpaste

Journal of Periodontal Research — Tue, 14 May 2013 04:00:00 +0100

ConclusionThe use of TCS‐containing toothpaste did not appear to lead to an increase in MIC of TCS of oral bacterial isolates. (Source: Journal of Periodontal Research)

Effectiveness of metronidazole as an adjunct to scaling and root planing in the treatment of chronic periodontitis: a systematic review and meta‐analysis

Journal of Periodontal Research — Tue, 14 May 2013 04:00:00 +0100

ConclusionThe meta‐analysis results seem to support the effectiveness of adjunctive MET with SRP compared to SRP alone. However, given the low number of included studies and limitations of meta‐analysis, future studies are needed to confirm these results. (Source: Journal of Periodontal Research)

Developmental defects of enamel in primary teeth and association with early life course events: a study of 6--36 month old children in Manyara, Tanzania

BMC Oral Health - Latest articles — Tue, 14 May 2013 04:00:00 +0100

In northern Tanzania, low birth weight children have a greater prevalence of developmental enamel defects at ages 6-36 months, providing new insight into the risk factors for dental problems in early childhood (Source: BMC Oral Health - Latest articles)

Dental caries prevalence, oral health knowledge and practice among indigenous Chepang school children of Nepal.

BMC Oral Health - Latest articles — Tue, 14 May 2013 04:00:00 +0100

Conclusions: Caries prevalence of 5--6 --year- old Chepang school children is above the recommended target set by FDI/WHO. The study reported 31% schoolchildren aged 8-16-year old suffered oral pain and decayed component constituted almost the entire dmft/DMFT index. The brushing habit was reportedly low with only 24% of the children brushing twice daily. A nationwide scientifically proven, cost effective school based interventions is needed for prevention and control of caries in schoolchildren in Nepal. (Source: BMC Oral Health - Latest articles)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

A rare presentation of multiple primary squamous cell carcinoma of the tongue in a patient with recurrent hepatitis C infection

Special Care in Dentistry — Tue, 14 May 2013 04:00:00 +0100

ABSTRACT Hepatitis C virus (HCV) infection has been implicated as a risk factor for development of oral squamous cell carcinoma (SCC). Multiple primary sites of oral SCC associated with HCV infection occurs infrequently. This case report describes a rare presentation of multiple primary SCCs of the tongue in a patient with recurrent HCV cirrhosis status post liver transplant that required interdisciplinary medical and surgical management. It is important for oral health care providers to understand the local and systemic implications of HCV infection and perform routine clinical examinations to monitor for development of oral lesions and associated complications. (Source: Special Care in Dentistry)

Temporomandibular disorder in a patient with pseudoxanthoma elasticum: a case report and review

Special Care in Dentistry — Tue, 14 May 2013 04:00:00 +0100

We present a case of a 46‐year‐old female with PXE diagnosed with temporomandibular disorder (TMD). To our knowledge, this is the first report of a patient with TMD coexisting with PXE in the scientific literature. (Source: Special Care in Dentistry)

Differentiation of human dental stem cells reveals a role for microRNA‐218

Journal of Periodontal Research — Mon, 13 May 2013 04:00:00 +0100

ConclusionThese data reveal a miRNA‐regulated pathway for the differentiation of human DSCs and a select network of human miRNAs that control DSC osteogenic differentiation. (Source: Journal of Periodontal Research)

Commentary to Manfredini et al. J Oral Rehabil. 2012;39:463–71

Journal of Oral Rehabilitation — Mon, 13 May 2013 04:00:00 +0100

(Source: Journal of Oral Rehabilitation)

14 year old missing laterals: When to place implants?

Dental Implants Discussed by Experts — Mon, 13 May 2013 00:25:09 +0100

At what age would implants be considered appropriate? What type of temporary fixed or removable appliance would you consider? (Source: Dental Implants Discussed by Experts)

Correlation of previous experience, patient expectation and the number of post‐delivery adjustments of complete dentures with patient satisfaction in a Brazilian population

Journal of Oral Rehabilitation — Sun, 12 May 2013 04:00:00 +0100

The objective of this study was to verify possible correlations between previous experience with dentures, patient expectation and the number of post‐delivery adjustments with patient satisfaction after treatment. One hundred patients (mean age 61·9 ± 10·3) rated their previous experiences with complete dentures and their expectations before and satisfaction after treatment on a visual analogue scale (VAS) using scores from 0 (worst results) to 10 (best results). The number of post‐delivery adjustments and other patient‐related clinical variables was also noted. Patient expectation scores were higher than previous experience scores and satisfaction after treatment scores. Positive and weak correlations were found between previous chewing experiences with complete dentures, with ...

Narrow Diameter Implants for Long Term Use: What does this really mean?

Dental Implants Discussed by Experts — Sun, 12 May 2013 00:44:44 +0100

Some narrow diameter implants are approved for long term use. But, what exactly does this mean? (Source: Dental Implants Discussed by Experts)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Role of public health dentist towards domestic violence - Mythri H.

SafetyLit: All (Unduplicated) — Sat, 11 May 2013 19:11:04 +0100

[Abstract unavailable] Language: Eng... (Source: SafetyLit: All (Unduplicated))

In vitro chipping behaviour of all‐ceramic crowns with a zirconia framework and feldspathic veneering: comparison of CAD/CAM‐produced veneer with manually layered veneer

Journal of Oral Rehabilitation — Sat, 11 May 2013 04:00:00 +0100

Summary The purpose of this in vitro study was to assess the breaking load of zirconia‐based crowns veneered with either CAD/CAM‐produced or manually layered feldspathic ceramic. Thirty‐two identical zirconia frameworks (Sirona inCoris ZI, mono L F1), 0·6 mm thick with an anatomically shaped occlusal area, were constructed (Sirona inLab 3.80). Sixteen of the crowns were then veneered by the use of CAD/CAM‐fabricated feldspathic ceramic (CEREC Bloc, Sirona) and 16 by the use of hand‐layered ceramic. The CAD/CAM‐manufactured veneer was attached to the frameworks by the use of Panavia 2.0 (Kuraray). Half of the specimens were loaded until failure without artificial ageing; the other half of the specimens underwent thermal cycling and cyclic loading (1·2 million chewing cycles,...

Zirconium Implants: Any recommendations?

Dental Implants Discussed by Experts — Sat, 11 May 2013 00:54:36 +0100

I wanted to get some feedback on the zirconium (zirconia) dental implant. (Source: Dental Implants Discussed by Experts)

Ask Well: Replacing a Dental Crown

NYT Health — Fri, 10 May 2013 14:39:09 +0100

Crowns need not be replaced simply because they are decades-old. (Source: NYT Health)

Profiling biomarkers in gingival crevicular fluid using multiplex bead immunoassay

Archives of Oral Biology — Fri, 10 May 2013 08:15:36 +0100

Conclusion: IL-1β levels in GCF correlate with the PDs, BOP and the presence of P. gingivalis in subgingival plaque. Multiplex bead assays can be useful in GCF studies. These findings can help in identifying new diagnostic methods in the diagnosis of periodontal disease. (Source: Archives of Oral Biology)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Toll-like receptor activation and mechanical force stimulation promote the secretion of matrix metalloproteinases 1, 3 and 10 of human periodontal fibroblasts via p38, JNK and NF-kB

Archives of Oral Biology — Fri, 10 May 2013 08:15:36 +0100

Abstract: Matrix metalloproteinases (MMPs) are known to play a key role during orthodontic treatment leading to periodontal remodelling and tooth movement. MMPs may be induced by mechanical forces. However, the role played by toll-like receptors (TLRs) in modulating the effects of the mechanical force on periodontal fibroblasts is not known. To investigate the interaction between mechanical force and TLR stimulation, primary cultures of human periodontal fibroblasts were submitted to centrifugation in the presence of LPS and Pam3Cys, which are known TLR-4 and TLR-2 ligands, respectively. The expression of MMP-1, -2, -3, -8, -9, -10 and -13; TIMP (Tissue Inhibitor of Metalloproteinases) -1, -2 and -4; TNF-α (Tumour Necrosis Factor alpha); IL-1β (Interleukin 1 beta); ERK 1/2 (Extracellular...

Dental caries and chemical analyses in reconstruction of diet, health and hygienic behaviour in the Middle Euphrates valley (Syria)

Archives of Oral Biology — Fri, 10 May 2013 08:15:36 +0100

Discussion: These data suggest a similar socio-economic status during the Late Roman and Islamic periods. The diet of the population living in the Late Roman and Islamic periods contained a larger number of products containing strontium than calcium. In the modern population these proportions have been reversed. (Source: Archives of Oral Biology)

Evaluation of the effects of transient or continuous PTH administration to odontoblast-like cells

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Abstract: Parathyroid hormone participates in the metabolism of mineralized tissue. Its role in the formation of dentine is, as yet, incompletely understood. In the present study we analyzed the effect of transient (1 and 24-h/cycle) or continuous hPTH (1–34) treatment in odontoblast-like cells (MDPC-23) to the following parameters: mineral deposition detected by alizarin red, mRNA expression of the type I collagen (COL1), alkaline phosphatase (ALP), biglycan (BGN), matrix metalloproteinase 2 (MMP-2) and dentine sialophosphoprotein (DSPP) quantified by qRT-PCR. MMP-2 and ALP activities were quantified by zymography and colorimetric assay, respectively. The results showed that compared to Control group: intermittent PTH administration (1 and 24-h/cycle) decreased the mineral deposition an...

TGF-β1 and BMP-4 carried by liposomes enhance the healing process in alveolar bone

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusion: The present study indicates growth factors carried by liposomes, either in isolated or associated forms, as successful enhancers of the healing process in rat tooth sockets. We also conclude that the expression of fibronectin and collagen type III increases during the early phases of bone repair. (Source: Archives of Oral Biology)

Factors associated with specific clinical forms of oral candidiasis in HIV-infected Brazilian adults

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusion: The data indicates that the odds of having all clinical forms of OC are higher in HIV-infected adults not receiving HAART. (Source: Archives of Oral Biology)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Bioinformatics and systems biology analysis of genes network involved in OLP (Oral Lichen Planus) pathogenesis

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusions: Even with the limitations of any ab initio analysis, this study can suggest targeted experimentation, focused on the leader genes and therefore simpler to be analysed than mass scale molecular genomics. Moreover, it may suggest new potential risk factors and therapeutic targets. (Source: Archives of Oral Biology)

Association between occlusal curvature and masticatory movements with different test foods in human young adults with permanent dentitions

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

This study investigated the association between occlusal curvature and mandibular movements while chewing a variety of food items.Design: Forty-six young adults with complete dentitions (mean age, 25.0 years) participated in the study. Sphere radius of occlusal curvature was determined by a three-dimensional analysis of the mandibular arch based on the Broadrick flag method. Mandibular movements during unilateral chewing of six test food items (chewing gum, cheese, kamaboko, boiled beef, gummy jelly and raw carrot) until the subjects felt ready to swallow were recorded using a six-degrees-of-freedom mandibular movement recording system, and 11 parameters for masticatory movements of a lower incisal point of the mandible were analysed.Results: Linear regression analyses identified the spher...

Identification of disulphide stress–responsive extracytoplasmic function sigma factors in Rothia mucilaginosa

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Summary: Rothia mucilaginosa is known as a member of commensal bacterial flora in the oral cavity and has received attention as a potential opportunistic pathogen. We previously determined the genomic sequence of R. mucilaginosa DY-18, a clinical strain with biofilm-like structures isolated from an infected root canal of a tooth with persistent apical periodontitis. We found that the DY-18 genome had only two sigma factor genes that encoded the primary and extracytoplasmic function (ECF) sigma factors. Genomic analysis on the available database of R. mucilaginosa ATCC 25296 (a type strain for R. mucilaginosa) revealed that ATCC 25296 has three sigma factors: one primary sigma factor and two ECF sigma factors, one of which was highly homologous to that of DY-18. ECF sigma factors play an im...

Bone morphogenetic protein 6 stimulates mineralization in human dental follicle cells without dexamethasone

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusion: These findings suggest that hDFCs can differentiate to osteogenic lineage cells osteogenic induction medium without DEX, and BMP6 is a key gene in the osteogenic differentiation of hDFCs, and has therapeutic utility for bone regeneration and bone research. (Source: Archives of Oral Biology)

Comparison of the differentiation potential of neural crest derived progenitor cells from apical papilla (dNC-PCs) and stem cells from exfoliated deciduous teeth (SHED) into mineralising cells

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusion: Our results suggest that dNC-PCs are precursors for primary odontoblasts, whereas SHED differentiate into replacement odontoblasts. These different odontogenic differentiation potentials of dNC-PCs and SHED have to be considered for cellular therapies and tissue engineering approaches in the future. (Source: Archives of Oral Biology)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Compressive stress induced the up-regulation of M-CSF, RANKL, TNF-α expression and the down-regulation of OPG expression in PDL cells via the integrin-FAK pathway

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Conclusions: Results of this study indicate that the integrin-FAK pathway regulates compressive stress-induced expression of M-CSF, TNF-α, RANKL and OPG and suggests that the integrin-FAK complex acts as a mechanoreceptor in PDL cells. (Source: Archives of Oral Biology)

The effects of non-surgical periodontal therapy on oxidant and anti-oxidant status in smokers with chronic periodontitis

Archives of Oral Biology — Fri, 10 May 2013 08:15:35 +0100

Abstract: Aim: The aim of this study was to determine the effect of non-surgical periodontal treatment on gingival crevicular fluid (GCF) and serum oxidant–antioxidant levels in smoking and non-smoking patients with chronic periodontitis.Methods: Twenty-nine patients with chronic periodontitis (15 smokers (CP-S) and 14 non-smokers (CP-NS)) and 20 periodontally healthy subjects (10 smokers (H-S) and 10 non-smokers (H-NS)) totalling 49 subjects were included in this study. GCF was collected from at least two pre-selected sites (one moderate and one deep pocket) in patients with CP. In the healthy group, GCF samples were collected from one site. Probing pocket depth, clinical attachment level (CAL), gingival and plaque indices, and bleeding on probing were measured. To determine serum total...

Editorial board

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

(Source: Archives of Oral Biology)

Ascorbic acid and its pro-oxidant activity as a therapy for tumours of oral cavity – A systematic review

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusion: The results of our systematic review show that the pro-oxidant activity of pharmacologic ascorbic acid is a part of its dose-dependent bimodal activity and is a result of the proposed Fenton mechanism. In vitro, animal and ex vivo studies of pharmacologic ascorbic acid (AA) have yielded meritorious results proving vitamin C as an effective cytotoxic agent against oral neoplastic cells with potentially no harming effects on normal cells. However, a shortage of clinical trials and in vivo human studies pertaining to evaluation of anti-tumour activity of vitamin C in tumours of oral cavity remains a lacuna in concluding ascorbic acid as a beneficial therapeutic option in treatment of oral neoplasms. (Source: Archives of Oral Biology)

The effect of dentinal fluid flow during loading in various directions—Simulation of fluid–structure interaction

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusion: This study suggests that experiments to investigate the relationship between loading in various directions and dental pain should avoid measuring the bulk pulpal fluid flow from radicular pulp, but rather should measure the dentinal fluid flow in the dentinal tubules or coronal pulp. The FSI analysis used here could provide a powerful tool for investigating problems with coupled solid and fluid structures in dental biomechanics. (Source: Archives of Oral Biology)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

XRCC1 gene polymorphisms and risk of ameloblastoma

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusion: Our data suggest that polymorphism at codons 194 and 399, likely contributes to the risk of developing ameloblastoma. (Source: Archives of Oral Biology)

Calcitonin gingival crevicular fluid levels and pain discomfort during early orthodontic tooth movement in young patients

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusions: CT levels in the GCF significantly increased in the compression site after the short term after application of orthodontic forces. These changes were negatively associated with the perceived patient's dental pain during the period from 24h to 15d. (Source: Archives of Oral Biology)

Tooth agenesis patterns in unilateral cleft lip and palate in humans

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusion: A higher prevalence of tooth agenesis is observed in patients with CUCLP, even outside the cleft region, compared with the general population. Thirteen different patterns were observed, of which 6 were unique patterns. Certain teeth were involved in all agenesis patterns. Both the prevalence of orofacial clefting as well as hypodontia is more frequently observed on the left side. (Source: Archives of Oral Biology)

Evaluating the efficiency of caries removal using an Er:YAG laser driven by fluorescence feedback control

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusion: Examination of dental tissues by micro-CT allowed determination of the efficiency of Er:YAG laser-stimulated ablation. Feedback control of the KaVo Key Laser 3™ appeared to operate like a cut-off switch when infected dentine was eliminated, at a threshold of between 6 and 7. (Source: Archives of Oral Biology)

Can salivary activity predict periodontal breakdown in A. actinomycetemcomitans infected adolescents?

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

This study was designed to determine whether specific salivary factors could distinguish between subjects who have Aa initially and remain healthy (H/AA) as compared to those who develop LAP (LAP/AA).Design: H/AA subjects and healthy controls with no Aa (H) were enrolled in a longitudinal cohort study to investigate initiation of bone loss (LAP) over 3 years. After detection of LAP, stored saliva from 10 H, 10 H/AA, and 10 LAP/AA subjects was thawed, processed, and tested for (1) lactoferrin (Lf) concentration and iron levels; (2) agglutination of Aa; (3) killing of Gram-positive bacteria.Results: LAP/AA saliva levels of Lf iron were low prior to and after bone loss (3.6+1.7ngFe/μg) (LAP/AA vs. H and H/AA p≤0.01). Saliva from H/AA subjects caused Aa to agglutinate significantly more tha...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Micro-architecture and mineralization of the human alveolar bone obtained with microCT

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

This study analysed the architecture and mineralization of the trabecular bone at different jaw locations and thereby identified potential prognostic factors for implant failure. It has checked the hypotheses: (1) the mandible contains more compact and less mineralized trabecular bone than the maxilla and (2) within the mandible the trabecular bone is more compact and less mineralized in the anterior region.Methods: Alveolar bone specimens were produced from the cadavers of ten humans (7 males and 3 females; mean age: 73.7±12.5 years) and scanned with a high-resolution microCT system. Volumes of interest were chosen next to the roots of molars and incisors in both the maxilla and mandible. Several morphological parameters as well as the tissue mineral density were determined.Results: The ...

In vitro cytotoxicity of zoledronate (nitrogen-containing bisphosphonate: NBP) and/or etidronate (non-NBP) in tumour cells and periodontal cells

Archives of Oral Biology — Fri, 10 May 2013 08:15:34 +0100

Conclusions: These results, together with those reported by others and those from our previous in vivo experiments, suggest that NBPs, upon release from jawbones (e.g., during dental surgery or bone infection), may directly injure various cells located around the jawbones, and that etidronate may be protective against the cytotoxicity of NBPs in periodontal tissues. (Source: Archives of Oral Biology)

Temporary zinc oxide–eugenol cement: eugenol quantity in dentin and bond strength of resin composite

European Journal of Oral Sciences — Fri, 10 May 2013 08:15:20 +0100

This study investigated the effect of duration of exposure to zinc oxide–eugenol (ZOE) cement on the quantity of eugenol retained in dentin and on the microtensile bond strength (μTBS) of the resin composite. The ZOE cement (IRM Caps) was applied onto the dentin of human molars (21 per group) for 1, 7, or 28 d. One half of each molar was used to determine the quantity of eugenol (by spectrofluorimetry) and the other half was used for μTBS testing. The ZOE‐exposed dentin was treated with either OptiBond FL using phosphoric acid (H3PO4) or with Gluma Classic using ethylenediaminetetraacetic acid (EDTA) conditioning. One group without conditioning (for eugenol quantity) and two groups not exposed to ZOE (for eugenol quantity and μTBS testing) served as controls. The quantity of eugeno...

Clinical and radiographic outcomes of a combined resective and regenerative approach in the treatment of peri‐implantitis: a prospective case series

Clinical Oral Implants Research — Fri, 10 May 2013 08:13:08 +0100

ConclusionWithin the limits of this study, a combined regenerative and resective approach for the treatment of peri‐implant defects yielded positive outcomes in terms of PPD reduction and radiographic defect fill after 12 months. (Source: Clinical Oral Implants Research)

Expression of extracellular matrix metalloproteinase inducer glycosylation and caveolin‐1 in healthy and inflamed human gingiva

Journal of Periodontal Research — Fri, 10 May 2013 08:10:34 +0100

ConclusionEMMPRIN and caveolin‐1 colocalize in periodontal tissues. The increased active MMP‐1 and proMMP‐1 production may be associated with elevated HG‐EMMPRIN levels. (Source: Journal of Periodontal Research)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Editorial Board

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Publication date: May 2013 Source:Journal of Dentistry, Volume 41, Issue 5 (Source: Journal of Dentistry)

Statistical methodology in oral and dental research: Pitfalls and recommendations

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusions Reviews of published dental research repeatedly identify statistical errors in the design, analysis and conclusions of the study. Educating researchers on common pitfalls and giving recommendations for avoiding them may help researchers to eliminate statistical errors. Developments in statistical methodology should be routinely monitored to ensure the most appropriate statistical methods are used in dental research. (Source: Journal of Dentistry)

A new optical detection method to assess the erosion inhibition by in vitro salivary pellicle layer

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusions Monitoring of the specular reflection intensity can be successfully applied to quantify early erosion progression in comparative studies. In vitro salivary pellicle (2h) provides erosion inhibition but only in short term acidic exposures. Clinical significance The proposed optical technique is a promising tool for the fast and non-invasive erosion quantification in clinical studies. (Source: Journal of Dentistry)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Marginal quality of posterior microhybrid resin composite restorations applied using two polymerisation protocols: 5-year randomised split mouth trial

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusion Regular and high-power polymerisation protocols had no influence on the marginal quality of the microhybrid composite tested up to 5 years. Both modified USPHS and SQUACE criteria confirmed that regardless of the polymerisation mode, marginal quality of the restorations deteriorated compared to baseline. (Source: Journal of Dentistry)

Clinical interpretation of a masticatory normative indicator analysis of masticatory function in subjects with different occlusal and prosthodontic status

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Publication date: May 2013 Source:Journal of Dentistry, Volume 41, Issue 5 Author(s): Dick J. Witter , Alain Woda , Ewald M. Bronkhorst , Nico H.J. Creugers Objectives To analyse the masticatory function of subjects characterised by different occlusal and prosthodontic status. Using Optosil® as a test food, the masticatory normative indicator (MNIOPT) was used to differentiate between sufficient (‘normal’) and impaired masticatory function. Methods Outcomes of occlusal force and masticatory tests were aggregated from three earlier studies dealing with four denture groups and three natural dentition groups. The four denture groups had a complete removable dental prosthesis in the upper jaw, and displayed one of the four following lower jaw prosthodontic rehabilitations: (i) complete...

Ion release and physical properties of CPP–ACP modified GIC in acid solutions

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusion Incorporation of 3% (w/w) CPP–ACP into F7 enhanced calcium and phosphate ion release, with no significant change in fluoride ion release and no adverse effects on surface hardness or change in mass. Clinical significance statement GICs have the potential to release fluoride ions particularly under acidic conditions associated with dental caries and erosion. A new GIC containing CPP–ACP and fluoride releases not only fluoride ions but also calcium and phosphate ions under acidic conditions which should help to inhibit demineralisation associated with caries and erosion. (Source: Journal of Dentistry)

Initial fracture resistance and curing temperature rise of ten contemporary resin-based composites with increasing radiant exposure

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusions Individual products require different levels of radiant exposure to optimize their fracture resistance. Light activated composites vary in the rate at which they attain optimal fracture resistance. Clinical significance Unless the clinician accurately controls all the variables associated with energy delivery, there is no way of predicting that acceptable fracture resistance will be achieved intra-orally. (Source: Journal of Dentistry)

Effects of dual antibacterial agents MDPB and nano-silver in primer on microcosm biofilm, cytotoxicity and dentine bond properties

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusions The method of using dual agents MDPB+NAg in the primer yielded potent antibacterial properties. Hence, this method may be promising to combat residual bacteria in tooth cavity and invading bacteria at the margins. The dual agents MDPB+NAg may have wide applicability to other adhesives, composites, sealants and cements to inhibit biofilms and caries. (Source: Journal of Dentistry)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Quantitative high contrast X-ray microtomography for dental research

Journal of Dentistry — Fri, 10 May 2013 04:00:00 +0100

Conclusion The improved accuracy and contrast sensitivity, together with the non-destructive nature of XMT in general, facilitates precise studies of dynamic processes in teeth. The ability to differentiate subtle differences in mineral concentration allows dead tracts to be traced in three dimensions, linking external pathology in teeth to reactive processes from the pulp. Clinical significance The MuCAT scanners have been optimized for quantification of mineral concentration and are particularly useful for in vitro studies of de- and re-mineralization, excavation and other treatment methodologies, and for gaining further insight into tooth morphology and pathology. Results from such studies will inform development of clinical treatment and management. (Source: Journal of Dentistry)

Success rates of prosthetic restorations on endodontically treated teeth; a systematic review after 6 years

Journal of Oral Rehabilitation — Fri, 10 May 2013 04:00:00 +0100

Summary The aims of this systematic review were to investigate the success rates of prosthetic restorations on endodontically treated teeth and their manner of failure. PubMed and hand literature searches were conducted on studies published until June 2012. Only clinical studies on human subjects referring to the success rates of prosthetic restorations on endodontically treated teeth with a follow‐up period of at least 6 years were reviewed. A total of four studies were identified. Meta‐analysis showed the success rate to be 92% (CI 82–98%) for single crowns on endodontically treated teeth and 79% (72–86%) for fixed dental prostheses. Only one study reported on removable dental prostheses with a success rate of 66%. Single crowns on teeth restored without posts demonstrated a suc...

Mothers and Daughters: Smart Girls Say the Darndest Things

Psychology Today Parenting Center — Thu, 09 May 2013 23:49:53 +0100

Mother's Days: The trouble with mothering bright girls Mother: 'Oh, honey, I love you, too'......... Daughter: 'No, Mom. I said I love YouTube' read more (Source: Psychology Today Parenting Center)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

What Your Dentist Wants You to Do

WebMD Health — Thu, 09 May 2013 17:11:13 +0100

A top dentist opens up about what he wishes his patients would do. (Source: WebMD Health)

Electrochemical induced dissolution of fragments of nickel–titanium endodontic files and their removal from simulated root canals

International Endodontic Journal — Thu, 09 May 2013 04:00:00 +0100

ConclusionsIncreasing fluoride concentration resulted in greater active dissolution of NiTi files. The dissolution of fractured files in simulated root canals enabled the recovery of its original path during a clinically acceptable period of time. (Source: International Endodontic Journal)

A.T. Still plans $23 million dental school clinic in St. Louis

bizjournals.com Health Care:Hospitals headlines — Wed, 08 May 2013 23:54:23 +0100

Pending accreditation, a $23 million dental school clinic could land in St. Louis near Lafayette Square. A.T. Still University, a private, nonprofit institution that offers a variety of clinical and health care management degree programs at campuses in Kirksville, Mo., and Mesa, Ariz., is planning to build a dental clinic to serve the underserved and uninsured community in St. Louis. Students would first spend two years at A.T. Still’s new Missouri School of Dentistry & Oral Health, now under… (Source: bizjournals.com Health Care:Hospitals headlines)

How should we educate dental geriatricians?

Gerodontology — Wed, 08 May 2013 04:00:00 +0100

(Source: Gerodontology)

Clinical aspects of the use of dental adhesive materials in patients with chronic xerostomia

Gerodontology — Wed, 08 May 2013 04:00:00 +0100

doi: 10.1111/j.1741‐2358.2012.00659.x Clinical aspects of the use of dental adhesive materials in patients with chronic xerostomia Adhesives are commonly used by denture wearers to increase the retention and stability of the complete denture, to improve the chewing and masticatory abilities and to psychologically support the patient to make the complete denture more acceptable. Denture fixatives can be especially recommended for use and to aid retention for patients with dryness of the mouth, poor secretion of saliva and xerostomia (e.g. diabetes mellitus). Dental adhesives may be contaminated with bacteria, yeast and fungi during the manufacturing process, and they have been shown to initiate and promote microbial growth. Some products have been shown to release formaldehyde, which i...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Diary Dates

Gerodontology — Wed, 08 May 2013 04:00:00 +0100

(Source: Gerodontology)

Radiographic outcomes of transcrestal sinus floor elevation performed with a minimally invasive technique in smoker and non‐smoker patients

Clinical Oral Implants Research — Wed, 08 May 2013 04:00:00 +0100

ConclusionsSmoking has a limited impact on the outcomes of tSFE performed with the Smart Lift technique. (Source: Clinical Oral Implants Research)

Retrospective Study of Short and Extra‐Short Implants Placed in Posterior Regions: Influence of Crown‐to‐Implant Ratio on Marginal Bone Loss

Clinical Implant Dentistry and Related Research — Wed, 08 May 2013 04:00:00 +0100

ConclusionsThe CI ratio had not a significant influence on MBL in Biotechnology Institute (BTI; Vitoria, Spain) short implants humidified with PRGF‐Endoret and placed in posterior areas. The only variable that showed a significant negative influence on first year postloading MBL was the use of cantilever for rehabilitations. (Source: Clinical Implant Dentistry and Related Research)

Long‐Term Outcomes for the Treatment of Atrophic Posterior Maxilla: A Systematic Review of Literature

Clinical Implant Dentistry and Related Research — Wed, 08 May 2013 04:00:00 +0100

ConclusionsSinus floor elevation with the lateral approach and with the osteotome technique is an effective and well‐documented therapeutic option for the rehabilitation of atrophic posterior maxilla. The use of short implants is promising but needs further investigation to be considered as effective as the other techniques in the long term. However, the indication for the three different techniques is not perfectly equivalent and the treatment choice should be based on a careful evaluation of the individual case, in particular on the available residual bone. (Source: Clinical Implant Dentistry and Related Research)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Researchers discover possible trigger for spread of head and neck cancer cells

UCLA Newsroom: Health Sciences — Tue, 07 May 2013 16:30:00 +0100

UCLA RESEARCH ALERT FINDINGS: Very little has been known about the epigenetic events — developmental and environmental factors affecting genes — that occur prior to the invasive growth of head and neck squamous cell carcinomas and their spread to other parts of the body, or metastasis. However, researchers from the UCLA School of Dentistry discovered what could be a crucial step toward understanding the process that activates the cancer cells. Squamous cell carcinoma is known for being one of the most deadly and debilitating types of tumors. Led by Dr. Cun-Yu Wang, a UCLA School of Dentistry professor and leading cancer scientist, the group identified the key epigenetic factor KDM4A, which modifies the molecular activation process of protein AP-1. AP-1 is known to...

Root caries: a periodontal perspective

Journal of Periodontal Research — Tue, 07 May 2013 04:00:00 +0100

ConclusionResearch regarding root caries in age‐specific (elderly) periodontal patients is needed. Improved oral hygiene practices, locally applied preventive measures, good dietary habits and regular dental check‐ups are crucial approaches to prevent both periodontal disease progression and root caries. Periodontal patients with root exposure should follow a strict root caries prevention protocol, as an integral component of their periodontal maintenance therapy. (Source: Journal of Periodontal Research)

Tooth loss in individuals under periodontal maintenance therapy: 5‐year prospective study

Journal of Periodontal Research — Tue, 07 May 2013 04:00:00 +0100

ConclusionIC individuals undergoing PMT presented higher rates of TL when compared to RC individuals. Findings demonstrated the influence of irregular compliance and the importance of monitoring other risk predictors for TL such as smoking, male gender and severity of probing depth during PMT. (Source: Journal of Periodontal Research)

Effects of tobacco smoking on the survival rate of dental implants placed in areas of maxillary sinus floor augmentation: a systematic review

Clinical Oral Implants Research — Tue, 07 May 2013 04:00:00 +0100

ConclusionsAlthough smoking was associated with implant failure in most of individual studies and in the overall meta‐analysis, the detrimental effect of smoking was not confirmed when only prospective data were assessed. (Source: Clinical Oral Implants Research)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Relationships between oral infections and blood glucose concentrations or HbA1c levels in normal and diabetic rats

International Endodontic Journal — Tue, 07 May 2013 04:00:00 +0100

ConclusionsOral infections affect glycaemic conditions in diabetic rats and increase HbA1c levels in normoglycaemic or diabetic rats.This article is protected by copyright. All rights reserved. (Source: International Endodontic Journal)

Well: Obstacles for Pregnant Women Seeking Dental Care

NYT Health — Mon, 06 May 2013 21:43:40 +0100

Experts say that too many pregnant patients are not getting timely dental care, because of outdated notions that treating them is not safe and other factors. (Source: NYT Health)

Miami Dentist is Saving Lives with His Cutting-Edge Approach to Dental...

PRWeb: Medical Pharmaceuticals — Mon, 06 May 2013 19:10:18 +0100

Dr. Julio Hernandez takes a bold approach to ensure the health of his patients and introduces a new program that can decrease tooth decay rates by 74%.(PRWeb May 03, 2013)Read the full story at http://www.prweb.com/releases/2013/5/prweb10701392.htm (Source: PRWeb: Medical Pharmaceuticals)

Marshfield Dentist Launches Groundbreaking Cavity Prevention Program...

PRWeb: Medical Pharmaceuticals — Mon, 06 May 2013 19:10:18 +0100

Dr. Burghardt takes a bold new approach to the cavity epidemic.(PRWeb May 02, 2013)Read the full story at http://www.prweb.com/releases/2013/5/prweb10692212.htm (Source: PRWeb: Medical Pharmaceuticals)

Patient Solicitation Root of Dental Clinic Lawsuit

Arkansas Business - Health Care — Mon, 06 May 2013 05:00:00 +0100

Dentist Montgomery D. Heathman of Little Rock said in his lawsuit filed in Pulaski County Circuit Court that problems started shortly after he bought Arkansas Family Dental P.A.'s location at 9200 Chicot Road in December for $271,000. (Source: Arkansas Business - Health Care)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

External cervical resorption: an analysis using cone beam and microfocus computed tomography and scanning electron microscopy

International Endodontic Journal — Mon, 06 May 2013 04:00:00 +0100

Abstract AimTo provide a three‐dimensional representation of external cervical resorption (ECR) with microscopy, stereo microscopy, cone beam computed tomography (CT), microfocus CT and scanning electron microscopy (SEM). SummaryExternal cervical resorption is an aggressive form of root resorption, leading to a loss of dental hard tissues. This is due to clastic action, activated by a damage of the covering cementum and stimulated probably by infection. Clinically, it is a challenging situation as it is characterized by a late symptomatology. This is due to the pericanalar protection from a resorption‐resistant sheet, composed of pre‐dentine and surrounding dentine. The clastic activity is often associated with an attempt to repair, seen by the formation of osteoid tissue. Key learni...

Erratum

Clinical Implant Dentistry and Related Research — Mon, 06 May 2013 04:00:00 +0100

(Source: Clinical Implant Dentistry and Related Research)

Influence of filler charge on gloss of composite materials before and after in vitro toothbrushing

Journal of Dentistry — Sun, 05 May 2013 20:16:23 +0100

Conclusions All tested materials showed a gloss decrease. However, the higher filler load a composite resin has, the higher gloss it can achieve. (Source: Journal of Dentistry)

Colour reproduction for advanced manufacture of soft tissue prostheses

Journal of Dentistry — Sun, 05 May 2013 20:16:23 +0100

Conclusions This study demonstrated that the proposed colour reproduction system can be effectively used to reproduce a range of human skin colours for application in advanced manufacture of soft tissue prostheses. (Source: Journal of Dentistry)

In vivo bisphenol-A release from dental pit and fissure sealants: A Systematic Review

Journal of Dentistry — Sun, 05 May 2013 20:16:23 +0100

Conclusions The available evidence on this topic derived from studies that represent a moderate level of evidence. Nevertheless, the available evidence supports that BPA is released in saliva after sealant placement. Clinical significance From the qualititative and quantitative synthesis of studies, it is reasonable to conclude that BPA is released after placement of some dental pit and fissure sealants in the oral cavity. The biggest quantities are detected in saliva immediately after or one hour after their placement. (Source: Journal of Dentistry)

Effect of desensitising paste containing 8% arginine and calcium carbonate on biofilm formation of Streptococcus mutans in vitro

Journal of Dentistry — Sun, 05 May 2013 20:16:23 +0100

Conclusions Ar-Ca appears to present antibiofilm efficacy and may provide a promising approach to combat bacterial infection in hypersensitive dentinal lesions. Clinical Significance As a clinical application of desensitising polishing paste, the paste containing 8% arginine and calcium carbonate could also inhibit the biofilm formation effectively. (Source: Journal of Dentistry)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Evaluation of primary and secondary stability of titanium implants using different surgical techniques

Clinical Oral Implants Research — Sun, 05 May 2013 20:13:46 +0100

ConclusionAt 3 weeks after implant installation, independent of the used undersized surgical technique, the %BV in the inner zone (0–500 μm) peri‐implant area was improved due to both condensation of the surrounding bone as also the translocation of host bone particles along the implant surface. Surprisingly, no mechanical beneficial effect of the 25% undersized surgical technique could be observed as compared to the 5% or 15% undersized surgical technique to improve primary or secondary implant stability. (Source: Clinical Oral Implants Research)

Implant placed adjacent to non-infected previous failed site: will it survive?

Dental Implants Discussed by Experts — Sun, 05 May 2013 14:56:58 +0100

Due to proximity to incisive canal, I had to be cautious in the surgical installation. In doing so the implant was touching the previous failed site (Source: Dental Implants Discussed by Experts)

Fluoride Reduces The Ability Of Decay-Causing Bacteria To Stick

Health News from Medical News Today — Sun, 05 May 2013 07:00:00 +0100

In an advance toward solving a 50-year-old mystery, scientists are reporting new evidence on how the fluoride in drinking water, toothpastes, mouth rinses and other oral-care products prevents tooth decay. Their report appears in the ACS journal Langumir. Karin Jacobs and colleagues explain that despite a half-century of scientific research, controversy still exists over exactly how fluoride compounds reduce the risk of tooth decay. That research established long ago that fluoride helps to harden the enamel coating that protects teeth from the acid produced by decay-causing bacteria... (Source: Health News from Medical News Today)

Influence of Implant transmucosal design on early peri‐implant tissue responses in beagle dogs

Clinical Oral Implants Research — Sun, 05 May 2013 04:00:00 +0100

ConclusionConcave‐machined profiled implants with a transmucosal design may induce less bone resorption and better connective tissue attachment around implants than the straight‐machined profiled implants during the early healing phase. (Source: Clinical Oral Implants Research)

Retrospective success and survival rates of dental implants placed with simultaneous bone augmentation in partially edentulous patients

Clinical Oral Implants Research — Sun, 05 May 2013 04:00:00 +0100

ConclusionsFor the subjects included in this retrospective study, the data demonstrate that GBR is a predictable procedure. The survival and success rates of the implants inserted with simultaneous GBR were similar, if slightly lower, to the non‐grafted implants. (Source: Clinical Oral Implants Research)

Evaluation of plasma treatment effects on improving adhesive–dentin bonding by using the same tooth controls and varying cross‐sectional surface areas

European Journal of Oral Sciences — Sat, 04 May 2013 04:00:00 +0100

The objective of this study was to evaluate and verify the effectiveness of plasma treatment for improving adhesive–dentin interfacial bonding by performing microtensile bond‐strength (μTBS) testing using the same‐tooth controls and varying cross‐sectional surface areas. Extracted unerupted human third molars were used after removal of the crowns to expose the dentin surface. One half of each dentin surface was treated with a non‐thermal argon plasma brush, whilst the other was shielded with glass slide and used as an untreated control. Adper Single Bond Plus adhesive and Filtek Z250 dental composite were then applied as directed. The teeth thus prepared were further cut into micro‐bar specimens, with cross‐sectional sizes of 1 × 1 mm2, 1 × 2 mm2, and 1 × 3 mm2, for...

Implant too close to adjacent tooth: how best to proceed?

Dental Implants Discussed by Experts — Fri, 03 May 2013 07:24:42 +0100

I am however concerned that the implant is too close to #12 [maxillary left first premolar; 24]. (Source: Dental Implants Discussed by Experts)

Influence of powder‐to‐water ratio on radiopacity, setting time, pH, calcium ion release and a micro‐CT volumetric solubility of white mineral trioxide aggregate

International Endodontic Journal — Fri, 03 May 2013 04:00:00 +0100

ConclusionsThe ratio of powder/water significantly interfered with the physical and chemical properties of white MTA Angelus. (Source: International Endodontic Journal)

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Commentary

Journal of Esthetic and Restorative Dentistry — Fri, 03 May 2013 04:00:00 +0100

(Source: Journal of Esthetic and Restorative Dentistry)

Biotype Change for the Esthetic Rehabilitation of the Smile

Journal of Esthetic and Restorative Dentistry — Fri, 03 May 2013 04:00:00 +0100

Abstract An esthetic and natural appearing smile is the result of multiple important factors. There must be a harmonious relation between tooth size, shape, proportion, and the periodontium. Successful rehabilitation of a smile often requires an interdisciplinary approach which was applied in the case presented in this article to a patient with multiple esthetic challenges. Treatment included management of canines in the lateral incisor positions, proportionally small teeth, and excessive gingival display. Good communication and coordination of care between the surgical and restorative partners produced a pleasing outcome facilitated by periodontal surgery resulting in a modification of the gingival biotype. Clinical SignificanceSmile design including crown lengthening and biotype modifica...

Esthetic Paradigms in the Interdisciplinary Management of Maxillary Anterior Dentition—A Review

Journal of Esthetic and Restorative Dentistry — Fri, 03 May 2013 04:00:00 +0100

This article reviews some commonly used esthetic proportions and paradigms in dentistry. Establishing optimal anterior esthetics frequently entails restorative, orthodontic, and periodontal treatment. Several guidelines have been purported to facilitate an esthetic outcome during the rehabilitation of the maxillary anterior teeth. The golden proportion, recurring esthetic dental proportion, tooth width : height ratios, vertical positioning of the maxillary lateral incisor, and the apparent contact dimension are examples of some such guidelines. Evaluation of these esthetic paradigms including their validity, esthetic significance, perception by laypeople, and the range of tolerance to alterations are very important considerations. Clinical SignificanceThis review presents a comprehensi...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

The extremely resorbed mandible, 10‐year results of a randomized controlled trial on 3 treatment strategies

Clinical Oral Implants Research — Fri, 03 May 2013 04:00:00 +0100

ConclusionConsidering the favorable clinical and radiographic parameters and the fact that patients can be treated in outdoor clinic setting, the use of short endosseous implants in combination with an overdenture is the first choice of treatment in patients with extremely resorbed mandibles. (Source: Clinical Oral Implants Research)

A longitudinal study of dental arch morphology in children with the syndrome of Crouzon or Apert

European Journal of Oral Sciences — Fri, 03 May 2013 04:00:00 +0100

The aim of this study was to compare changes in dental arch morphology between patients with Crouzon syndrome or Apert syndrome and controls. Children between 4 and 14 yr of age with Crouzon syndrome (n = 40) or Apert syndrome (n = 28) were compared with non‐syndromic controls (n = 457) in terms of arch widths, depths, and length dimensions. Multilevel statistical modeling techniques were used to evaluate changes over time. Dental arch dimensions were found to be smaller in patients with Crouzon syndrome or Apert syndrome compared with control subjects. Maxillary intercanine width for patients with Apert syndrome were increased, whilst other arch width variables showed no change. Patients with Crouzon syndrome showed increases in maxillary intercanine width, whilst intermolar widt...

25th ISDR Conference

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

SM BalajiIndian Journal of Dental Research 2012 23(6):701-702 (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Effect of two different dentin desensitizers on shear bond strength of two different bonding agents to dentin: An in vitro study

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

The objective of the study was to compare the effect of two different desensitizers on shear bond strength of two different fifth-generation single-bottle adhesive agents on dentin surface. Materials and methods: Sixty human premolars were taken and divided into six groups of 10 samples each. The first two groups were the control groups and were not pretreated with any desensitizer; the remaining four groups were the experimental groups and were pretreated with either Denshield™ or Sensodent-K™ desensitizer. The specimens in each group were subjected to acid etching, application of adhesive (Single Bond or Prime and Bond NT), and application of hybrid composite resin (Z-100) according to the standard protocol. The specimens were subjected to shear bond strength t...

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Comparison of the roles of serratiopeptidase and dexamethasone in the control of inflammation and trismus following impacted third molar surgery

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: The results showed dexamethazone was more effective in reduction of swelling and pain in comparison with serratiopaptidase. Both dexamethazone and serratiopaptidase had the same effect on trismus. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Effect of periodontal therapy on circulating levels of endotoxin in women with periodontitis: A pilot clinical trial

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusions: SRP can lead to endotoxemia, possibly by release of endotoxins by bacteria of periodontal origin, into the systemic circulation. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Determination of the relative parallelism of occlusal plane to three ala-tragal lines in various skeletal malocclusions: A cephalometric study

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Shashinandan K Venugopalan, CL SatishBabu, MS RaniIndian Journal of Dental Research 2012 23(6):719-725Background: Establishment of a proper occlusal plane is needed for developing an occlusion that is compatible with the biomechanics of a stomatognathic system. There has been a great deal of controversy regarding the anatomic reference point/s taken for identifying the Camper's plane (Ala-Tragus) to which the occlusal plane is oriented parallel in regular complete denture Prosthodontic practice. There has been no study in literature to correlate the occlusal plane to the Camper's plane in various skeletal malocclusions using landmarks on a lateral Cephalogram. Aim : The aim of the study isto determine the relative parallelism of the occlusal plane to ala- tragal...

An ultrasonographic evaluation of masseter muscle thickness in different dentofacial patterns

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: The masseter muscle thickness varied among the three vertical dentofacial patterns and sexual dimorphism also existed except in the hyperdivergent group. Masseter muscle thickness was found to be negatively correlated to vertical facial pattern and positively associated with transverse craniofacial morphology. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Effect of a glass ionomer cement and a fluoride varnish on cross-sectional microhardness values of artificial occlusal caries: In vitro study

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusions: This in vitro study demonstrated that the use of GIC over an artificial active WSLs and exposed to an artificially HRCC setting tend to express some effect in increased surface KHN values. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Association between oral health-related quality of life and atraumatic restorative treatment in school children: An exploratory study

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: Dental caries exerts a strong influence on the OHRQoL of children. ART was shown to be a simple and painless caries management approach that could improve the OHRQoL of school children. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Vitapan 3D-master shade guide showed no fluorescence emission

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: ΔE *ab-FL values were in the range of 0.2 to 2.7 (mean: 1.2±0.6) for the original and 0.5 to 1.6 (mean: 0.9±0.1) for the ground-to-flat tabs, which was significantly different based on paired t-test (p<0.05); however, fluorescence peak was not detected in all the shade tabs. Therefore, fluorescence property of Vitapan 3D-Master shade guide should be modified to have similarfluorescence property of natural teeth and corresponding restorative materials. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Influence of adhesion promoters and curing-light sources on the shear bond strength of orthodontic brackets

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusions: The conventional orthodontic adhesive presented higher bond strength than the nanofilled composite, although both materials interacted similarly to the teeth. The curing-light devices tested did not influence on bond strength of orthodontic brackets. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

The microbiology of the peri-implant sulcus following successful implantation of oral prosthetic treatments

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: The anerobic conditions created in the peri-implant sulcus might with time enhance the number of anerobic bacteria present following dental implant loading. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Salivary flow and dental caries in Brazilian youth with type 1 diabetes mellitus

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: The lower salivary flow rate in diabetics could have been related to their higher GBI. The higher GBI in the diabetics is a matter of concern in the diabetics and is a sign for higher chances of developing periodontal problems. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.

Flowable resin and marginal gap on tooth third medial cavity involving enamel and radicular cementum: A SEM evaluation of two restoration techniques

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: The interposition of a low elastic modulus composite between the adhesive layer and the composite resin allows an improvement of the cementum-restoration interface by the means of a lower shrinkage stress during polymerization. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

The use of stereophotogrammetry in oral surgery: Measurement of area changes after secondary epithelization and grafting vestibuloplasties

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: SPT is a valid method for measurement of intraoral soft tissue changes. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Mandibular bone changes induced by head and neck radiotherapy

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusion: Reduction in the width of the mandibular cortex and dimensions of the inferior alveolar canal could be considered as one of the effects of head and neck radiotherapy. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))

Comparative evaluation of two commercially available desensitizing agents for the treatment of dentinal hypersensitivity

Table of Contents : Indian Journal of Dental Research : 2006 - 17(3) — Fri, 03 May 2013 04:00:00 +0100

Conclusions: Both the agents showed significant reduction in sensitivity at all time intervals compared to baseline. A comparatively significant reduction in sensitivity score was seen in patients treated with fluoride varnish and it appeared to be more effective in providing long-term relief against all the three test stimuli. Teeth with initial high sensitivity score required repeat doses, which was comparable for both the groups. (Source: Table of Contents : Indian Journal of Dental Research : 2006 - 17(3))