Dentistry This is an OPML file. It can be used to export all the MedWorm RSS feeds on this topic into your personal RSS reader (usually you have to save this file to your own computer before clicking on an Import OPML command in your own feed reader to upload the file which will then import all the feeds) or it can be used by webmasters to integrate MedWorm feeds with their own website. This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 17.

Sponsoring Organizations and Liaisons
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Tags: Frontmatter Source Type: research

Editorial Board
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Tags: Frontmatter Source Type: research

Society Ad
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

News and Notes
All items for this section must be in the Editor's office 10 weeks before month of issue. Newport Harbor Academy of Dentistry
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

Sponsoring Organization Directory
President: Ming-Sheh (Percy) Chen, B1, No 17, Ln 26, Jilin Rd, Jhongshan District, Taipei 104, Taiwan. E-mail: apteraxy@ms36.hinet.net Vice President: Jou-Ta Huang, No.35-3, Chengho Rd., Sammin District, Kaohsiung City 807, Taiwan. E-mail: chair6332000@yahoo.com
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

Evaluation of zirconium-oxide-based ceramic single-unit posterior fixed dental prostheses FDPs generated with two CAD/CAM systems compared to porcelain-fused-to-metal single-unit posterior FDPs: A 5-Year clinical prospective study
Vigolo P, Mutinelli S. Journal of Prosthodontics, 2012; 21:265-269
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

A three-dimensional image-superimposition CAD/CAM technique to record the position and angulation of the implant abutment screw access channel
Cement-retained, implant-supported restorations have advantages over screw-retained restorations, but retrievability can be a problem. By using computer-aided design and computer-aided manufacturing (CAD/CAM) technology, a working cast or mouth can be scanned, and a definitive record of the screw hole can be made in 3 dimensions and saved as a file. This information includes not only the position of the opening of the screw hole but also its angulation and orientation, which can be retrieved if required.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Jong-Il Park, Tae-Ho Yoon Source Type: research

Using an existing denture to design a radiographic template for a two-implant mandibular overdenture
This article describes a technique for modifying an existing mandibular complete denture for use as a radiographic template with a radiopaque light-activated calcium hydroxide (Ca(OH)2) preparation. This allows prosthetically driven treatment planning and the surgical placement of 2 implants to support the existing mandibular denture.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Guy Huynh-Ba, Peggy Alexander, Matthew J. Vierra, Adriana Vargas, Thomas W. Oates Source Type: research

Digitizing implant position locators on master casts: comparison of a noncontact scanner and a contact-probe scanner
Holst S, Persson A, Wichmann M, Karl M. Int J Oral Maxillofac Implants 2012;27:29-35.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

Quality of life of patients with implant-retained maxillofacial prostheses: A prospective and retrospective study
Conclusions: Implant-retained prostheses were considered highly satisfactory, indicating good QOL for patients with maxillofacial defects. A comparison of pretreatment and posttreatment assessments revealed that implant-retained maxillofacial prostheses increased patient QOL.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Secil Karakoca Nemli, Cemal Aydin, Handan Yilmaz, Bilge Turhan Bal, Yeliz Kasko Arici Source Type: research

Availability of Journal Back Issues
As a service to our subscribers, copies of back issues of The Journal of Prosthetic Dentistry for the preceding 5 years are maintained and are available for purchase from Elsevier, Inc until inventory is depleted. Please write to Elsevier, Inc, Subscription Customer Service, 6277 Sea Harbor Dr, Orlando, FL 32887, or call 800-654-2452 or 407-345-4000 for information on availability of particular issues and prices.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

Precision of fit between implant impression coping and implant replica pairs for three implant systems
Statement of problem: The fabrication of an accurately fitting implant-supported fixed prosthesis requires multiple steps, the first of which is assembling the impression coping on the implant. An imprecise fit of the impression coping on the implant will cause errors that will be magnified in subsequent steps of prosthesis fabrication. Purpose: The purpose of this study was to characterize the 3-dimensional (3D) precision of fit between impression coping and implant replica pairs for 3 implant systems. The selected implant systems represent the 3 main joint types used in implant dentistry: external hexag...
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Roxanna J. Nicoll, Albert Sun, Stephan Haney, Ilser Turkyilmaz Source Type: research

Fracture resistance of soft tissue level implants after cyclic loading and external modification
Statement of problem: The exposure of the implant collar in the esthetic zone is a challenging complication of implant dentistry. The preparation of the exposed implant collar to create room for restorative material may decrease the strength of the abutment/implant assembly. Purpose: The purpose of this in vitro study was to evaluate the effect on the failure load of preparing a 0.5-mm chamfer finish line on an implant collar at various apical depths. Material and methods: Thirty solid abutments and 30 implants were screwed into a customized metal mold at a 30-degree angle to the vertical axi...
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Louis DiPede, Abdulmohsin Alhashim, T.K. Vaidyanathan, Robert Flinton Source Type: research

Receive Tables of Contents by E-mail
To receive tables of contents by e-mail, sign up through our Web site at http://www.journals.elsevierhealth.com/periodicals/ympr. Log on and click “Register” in the upper right-hand corner. After completing the registration process, click on “My Alerts,” then “Add Table of Contents Alert.” Select the category “Mosby” or type The Journal of Prosthetic Dentistry in the search field and click on the Journal title. The title will then appear, and having already completed the Registration process, you may add tables of contents alerts by accessing an issue of the Journal and clicking on the “Add TOC Alert” link.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

The wear of polished and glazed zirconia against enamel
Conclusions: Within the limitations of the study, polished zirconia is wear-friendly to the opposing tooth. Glazed zirconia causes more material and antagonist wear than polished zirconia. The surface roughness of the zirconia aided in predicting the wear of the opposing dentition.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Sridhar Janyavula, Nathaniel Lawson, Deniz Cakir, Preston Beck, Lance C. Ramp, John O. Burgess Source Type: research

Implant-bone load transfer mechanisms in complete-arch prostheses supported by four implants: A three-dimensional finite element approach
Conclusions: Numerical simulations highlighted that the cantilever length, the implant design and positioning, and the bone's mechanical properties and morphology can affect both load transmission mechanisms and bone overloading risks in complete-arch restorations supported by 4 implants. Distally tilted implants induced better loading transmission than vertical implants, although the levels of computed stress were physiologically acceptable in both situations.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Luigi Baggi, Simone Pastore, Michele Di Girolamo, Giuseppe Vairo Source Type: research

Regular and platform switching: bone stress analysis varying implant type
Gurgel-Juarez NC, de Almeida EO, Rocha EP, Freitas AC Jr, Anchieta RB, de Vargas LC, et al. J Prosthodont 2012; 21:160-6
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

The combination of a nylon and traditional partial removable dental prosthesis for improved esthetics: A clinical report
A benefit of a nylon partial removable dental prosthesis (PRDP) is the absence of a metal framework, providing improved esthetics. Unfortunately, the lack of a traditional framework reduces rigidity and the support of occlusal rests. This clinical report describes a combination of a nylon PRDP (polyamide denture base resin) and a traditional PRDP (framework/resin) for a Kennedy Class II, Modification 1, partially edentulous mandible.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Masayasu Ito, Alvin G. Wee, Takanari Miyamoto, Yasuhiko Kawai Source Type: research

Distribution of occlusal forces during occlusal adjustment of dental implant prostheses: a nonlinear finite element analysis considering the capacity for displacement of opposing teeth and implants
Kasai K, Takayama Y, Yokoyama A. Int J Oral Maxillofac Implants 2012;2:329-35.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Source Type: research

An alternative method for the fabrication of a root-supported overdenture: A clinical report
The preservation of teeth to support an attachment-retained overdenture is an appropriate and stable alternative to extractions and complete dentures. A key to success is the strategic selection of teeth for retention. This clinical report discusses a method for fabricating an overdenture based on a combination of direct and indirect impression techniques. This technique is a simple and time-efficient alternative to traditional methods that aids in overcoming difficulties in fabricating overdentures.
Source: Journal of Prosthetic Dentistry - January 1, 2013 Category: Dentistry Authors: Cristian Schuch, Aline Pinheiro de Moraes, Rafael Sarkis-Onofre, Tatiana Pereira-Cenci, Noéli Boscato Source Type: research

Oral health care provided by Greek dentists to persons with physical and/or intellectual impairment
ConclusionsContinuing education and training of dentists to treat PPII is essential in Greece.
Source: Special Care in Dentistry - January 1, 2013 Category: Dentistry Authors: Sotiria Gizani, Helen Kandilorou, Katerina Kavvadia, John Tzoutzas Tags: Article Source Type: research

Bacterial adhesion on the titanium and zirconia abutment surfaces
ConclusionsThere was a significant difference in the total bacterial count between the three groups. CPT presented the higher mean counts, followed by MPT and Zc. CPT group also showed a higher mean incidence of species than MPT and Zc. The anterior or posterior region of disks placement did not show significant differences in relation to bacterial adhesion.
Source: Clinical Oral Implants Research - January 1, 2013 Category: Dentistry Authors: Cássio do Nascimento, Murillo Sucena Pita, Flávio Henrique Nogueira Carriço Fernandes, Vinícius Pedrazzi, Rubens Ferreira de Albuquerque Junior, Ricardo Faria Ribeiro Tags: Original Article Source Type: research

Epidemiologic study of molar‐incisor hypomineralization in 8‐year‐old Spanish children
ConclusionsMolar‐incisor hypomineralization prevalence is high in the child population of this region and equally affects boys and girls. The condition increases significantly the need of treatment of affected children. A significant association with dental caries was observed.
Source: International Journal of Paediatric Dentistry - January 1, 2013 Category: Dentistry Authors: Miriam Garcia‐Margarit, Monserrat Catalá‐Pizarro, José María Montiel‐Company, José Manuel Almerich‐Silla Tags: Original Article Source Type: research

Role substitution
The term role substitution refers to having different members of the dental team take on clinical tasks formerly provided only by dentists. Proponents of this practice see it as a way to increase the efficiency and effectiveness of dentists who work in primary care environments, freeing up resources to improve access and reduce inequalities in providing oral health care. Developing such alternative models of workforce delivery may increase the access of rural communities to dental care. Opponents of this practice focus on issues with quality, effectiveness, and safety. They see role substitution as potentially threatening ...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Workforce Source Type: research

Tinnitus, temporomandibular symptoms, and depression
Temporomandibular disorders (TMDs) can produce jaw pain, earache, headache, and limited function, among other signs and symptoms. Often otolaryngologic, neurologic, and vascular symptoms are found, with the most common otolaryngologic manifestations being tinnitus, dizziness/vertigo, earache, hypoacusis sensation, hyperacusis, and stuffy sensation. It is possible that some of the same mechanisms are involved in TMDs and otolaryngologic symptoms. It has also been noted that tinnitus, dizziness, and depression have the same initiating and perpetuating factors, including emotional disturbances, disposition, personality traits...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Temporomandibular Disorders Source Type: research

Closed lock
The Research Diagnostic Criteria for temporomandibular disorders (RDC-TMD) classify TMDs using a dual-axis system. In this system, one axis covers patients with masticatory muscle pain with or without mouth opening difficulty, those with internal derangement of the TMJ, and patients with arthralgia, osteoarthritis, and osteoarthrosis, whereas the other deals with TMD-related pain and parafunctional behaviors, psychological distress, and psychosocial dysfunction. The multifactorial etiology of TMD dictates that one take an interdisciplinary approach to treatment. Recently a Cochrane review found the evidence in support of p...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Temporomandibular Disorders Source Type: research

Occlusal support and degeneration of the temporomandibular joint
The temporomandibular joint (TMJ) is a load-bearing joint and, as with other such joints, can be loaded excessively. As the functional demands placed on it increase, the TMJ attempts to remodel and adapt accordingly. However, when the physiologic limits of remodeling are surpassed, pathologic degenerative changes take place, often focused on the articular cartilage. The development of degenerative changes is a slow process but can cause severe damage to the hard and soft tissues of the joint. Aging is closely tied to the development of degenerative changes in the TMJ, possibly reflecting an intrinsic accumulation of tissue...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Temporomandibular Disorders Source Type: research

Teaching repair rather than replacement
Because of developments in tooth-colored restorative systems and new approaches to caries management, the teaching of operative dentistry has been changing across the world. Minimally invasive dentistry has become the guiding philosophy, and students are being schooled in posterior composite resin placement at least as often as in amalgam techniques. The result will be more composite resin restorations will be placed in general dental practices. The performance of posterior composites in clinical service will, as a result, need to be improved. Some restorations inevitably require replacement. However, deteriorating but sti...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Restorative Dentistry Source Type: research

Denture adhesive benefits
The clinical indications for using denture adhesives for well-made dentures include when anatomic structures are compromised by ridge shape, tissue resilience, and border attachments that do not provide sufficient stability and retention; when medical conditions impair neuromuscular control and the patient’s ability to develop the adaptive muscle behaviors needed to control denture movement; when the patient’s mucosa are thinned by age or susceptible to irritation in the presence of inadequate salivary flow; to avoid food particle accumulation under dentures; and when the patient desires better retention or stability t...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Removable Prosthodontics Source Type: research

Radio frequency identification of dentures
Since World War II, radio frequency identification (RFID) has been used as a method of identification. The RFID system consists of a data carrier, a tag or transponder, and a reader. The tag is a microchip with a coiled antenna that stores identifying information. This technology may offer a simple, reliable, and affordable way to identify dentures for patients in long-term care facilities (LTCFs). The reliability of RFID for identifying dentures of LTCF residents was tested.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Removable Prosthodontics Source Type: research

Denture adhesive and oral flora
Reliable denture retention and stability depend on taking appropriate impressions, extending denture margins, and considering anatomic structures, but remain a problem for some patient groups. This includes patients with Sjögren’s syndrome and those with xerostomia or bone resorption caused by medication or radiotherapy. These patients can have nonoptimal denture retention and stability or require frequent adjustments. Denture adhesives are also used to increase retention and stability for complete dentures, improve chewing and mastication ability, and support the patient’s psychologic health relative to denture use. ...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Removable Prosthodontics Source Type: research

Adult caries prevention
Prevention research focuses mainly on children, so that the strategies used to prevent adult caries have not changed much over the years. Adults at high risk for caries are told to use prescription strength or over-the-counter fluoride products, but these have not proved sufficient to reduce caries. Chlorhexidine (CHX), an antimicrobial agent, has been considered for use in a caries prevention role and tested in a 13-month trial of 240 45- to 75-year-old patients with xerostomia and high Streptococcus mutans counts. In an intention-to-treat (ITT) analysis, the treatment group had 40.8% fewer root surfaces with caries and 1...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Preventive Dentistry Source Type: research

Azithromycin
is a macrolide antibiotic used to treat many infections, including those affecting the upper respiratory tract and middle ear, sexually transmitted infections, and trachoma. It is also effective against most periodontal pathogens. Its enhanced activity against gram-negative pathogens is accompanied by significant immunomodulatory properties, making this agent useful for diseases not involving infections. Recently it has been used adjunctively for periodontal disease, including acute and chronic periodontitis and drug-induced gingival overgrowth. The diverse properties of azithromycin were reviewed, noting especially periodontal effects.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Periodontal Diseases Source Type: research

Preoperative instructions
For most patients, behavioral techniques are sufficient for managing anxiety but if they are not, conscious sedation can be used. Intravenous midazolam sedation helps to manage anxious patients having dentoalveolar surgery. However, preoperative preparation is needed, and noncompliance rates for this preparation can be high. As a result, the appointment may be delayed or canceled, which can be inconvenient and create a longer waiting list for other patients. Patients’ compliance with preoperative instructions for outpatient midazolam sedation for oral surgery was audited with the aim of improving compliance and reducing ...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Patient Compliance Source Type: research

Oral microbial markers for pancreatic disease
Pancreatic cancer has a poor outcome because it rapidly disseminates to the lymphatic system and then to distant organs. Five-year survival is just 5% among patients diagnosed with pancreatic cancer, even though 15%-20% of patients have surgically resectable disease when they are diagnosed. The only modifiable risk factor currently established for pancreatic cancer is smoking, but associations with an increased risk of this cancer have been suggested for diabetes, obesity, and insulin resistance. Patients with chronic pancreatitis have an extremely high risk of developing pancreatic cancer, suggesting that inflammation may...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Oral/Systemic Connections Source Type: research

Obesity and periodontal disease progression
Periodontal disease affects about half of US adults over age 30 years and is a primary cause of tooth loss. Significant positive links have been noted between obesity and periodontal disease prevalence. Higher periodontal disease prevalence is more strongly tied to measures of abdominal obesity (high waist circumference [WC] and waist-to-hip ratio) than to overall obesity. As overweight and obesity become more prevalent among US adults and children, interest has grown in using obesity-related indicators to predict the risks for many chronic health conditions, such as periodontal disease. Linkages between several obesity-re...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Oral/Systemic Connections Source Type: research

Straws do not cause dry socket
Dry socket, or alveolar osteitis (AO), occurs at extraction sites and is characterized by the lack of a blood clot. Many factors influence the loss of the clot, but most patients want to know whether or not they can use a straw. It has long been held that the act of sucking could create negative intraoral pressure and cause loss of the clot. Whether this is true or not was investigated.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Oral Surgery Source Type: research

Antithrombotic medication guidelines
Thromboembolic events are major causes of mortality and morbidity, for which physicians prescribe one or more antithrombotic medications to minimize patients' risk. Antiplatelet agents, fibrinolytic drugs, and anticoagulants can be used for patients at risk for these events. Dentists performing minor oral surgery in these patients require sufficient information about these drugs and guidelines regarding whether they should be discontinued perioperatively.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Oral Surgery Source Type: research

Burning mouth syndrome
The major symptom complex of burning mouth syndrome (BMS) includes sensations of burning (pyrosis) in the oral cavity without any pathologic condition present. The syndrome affects primarily postmenopausal women, and hormone replacement therapy treatments, both local and systemic, have been used, but not successfully. Some patients have a spontaneous remission after a long period of oral burning symptoms. Two patient subgroups within BMS have been identified: one in which the burning is limited to the anterior tongue (glossopyrosis) and one in which the burning affects multiple mouth areas, including the tongue, lips, pala...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Oral Medicine Source Type: research

Decision-making process
With predictable osseointegration, single tooth replacement by dental implant has become a viable treatment option. Information on the decision-making process for single implant treatment is lacking, however. The frequency of performing single implant treatment after tooth extraction and the factors that influence the decision to choose an implant were investigated.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Implants Source Type: research

Electric pulp testing
Pulp vitality tests reveal important aspects of the pulp status. Electric pulp testers (EPTs) deliver a current that can overcome the thickness of enamel and dentin and stimulate the myelinated sensory (Aδ) fibers. However, false-positive and false-negative results can occur. Factors that influence electric pulp test results include the thickness of enamel and dentin, the concentration of sensory Aδ fibers, the direction of dentinal tubules at the site where the electrode tip is placed, and the pulp chamber size. Electric threshold response may also be affected by patient age. As a result of many factors, the results of ...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Endodontics Source Type: research

Oral health in eating disorder patients
Eating disorders (EDs) can be divided into three main diagnoses: anorexia nervosa (AN), characterized mainly by underweight and food restriction; bulimia nervosa (BN), characterized by binge eating and inappropriate compensatory behaviors; and eating disorder not otherwise specified (EDNOS), which is a heterogenous mix of AN- and BN-like atypical EDs. The onset, expression, and intensity of EDs vary over time and between individuals. The early detection of EDs is important with respect to outcome, affecting psychological and somatic complications and oral health consequences. A knowledgeable and informed dental professiona...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Eating Disorders Source Type: research

Retention of pit and fissure sealants
Since the 1980s studies have been conducted on the efficacy of pit and fissure sealants, noting the clinical longevity of various sealing materials. Retention rates are classified as intact sealant, partial loss of material, or complete loss of material. Optimum protection only occurs if there is a complete seal of all the pits and fissures, so the clinical adequacy of sealing materials and/or application techniques is only relevant with the intact sealant category. A meta-analysis was conducted to determine which materials provide the best retention rates so that evidence-based recommendations can be made for clinical practice.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Dental Materials Source Type: research

Diagnosing cracked teeth
Teeth with crack lines in the vertical (occlusal-cervical) plane over time are considered cracked teeth. Patients often report discomfort with chewing associated with cracked teeth, and some have unexplained sensitivity to cold. The complicated and diverse symptoms associated with this condition combined with difficulty locating crack lines makes diagnosis difficult. Diagnostic methods include macrography, transillumination, staining with dyes, diagnostic surgery, microscopy, and cone beam computed tomography (CBCT) scans. Often a combination of these methods is needed to identify and confirm the presence of cracks. In add...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Cracked Teeth Source Type: research

Music to soothe the dental experience
Doctors commonly use music to distract patients who are fearful or anxious, but it may be more powerful than previously thought. A study led by David H Bradshaw, PhD, of the University of Utah in Salt Lake City found that when patients lose themselves in music, it may take the pain out of root canals or other painful medical procedures—especially if they are anxious about it. One hundred forty-three patients listened to music while they received a painful shock at the fingertip. The patients were directed to concentrate on the melodies and look for unusual tones. As they became more absorbed by the music, pain levels fel...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Extracts Source Type: research

Desensitizing dentifrices
Dentin hypersensitivity is experienced as brief, sharp, severe pain accompanying external thermal, tactile, evaporative, osmotic, or chemical stimulation of patent tubules, causing the movement of dentinal fluid in the tubules in patterns dictated by hydrodynamic theory. Pulpal nerves become depolarized, interpreted centrally as pain. Treatments aim at reducing or potentially eliminating the hypersensitivity and tend to either physically occlude the tubules or block neural transmission at the pulpal tissues, which chemically depolarizes the nerve synapse. Most efforts focus on the physical approach and include the use of d...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Tooth Sensitivity Source Type: research

Benefits and cautions
Disorders of the temporomandibular joint (TMJ) are usually managed with conservative measures such as jaw rest and soft diet, but some patients require occlusal splint therapy, physiotherapy, and medications. About 5% of patients have a functional or pathological problem in the TMJ that will respond best to surgery. Clinicians need to understand when TMJ surgery is the best option and properly manage their patients so that they do not become anxious or depressed because of a lack of progress after treatment. The role of TMJ surgery for temporomandibular disorders was explored.
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Temporomandibular Joint Surgery Source Type: research

Curing build-up materials
Core build-ups are used to reconstruct and stabilize teeth that have lost extensive amounts of coronal hard tissue before indirect restorations are placed. Resin-based composites combined with bonding systems are usually used for these core materials, having mechanical properties like those of amalgam. They also permit a more conservative, tissue-preserving reconstructive approach. Resin-based core build-up materials may be self-curing, light curing, or dual curing. Lower hardness values have been reported for dual-cured resin-based composites at increased cavity depths. One way to optimize the extent of polymerization and...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Restorative Dentistry Source Type: research

Rubbing it in
The available adhesive systems generally have immediate bond strength sufficient to bond to tooth structure without retentive cavity preparations. However, the bonding interface ages and loses adhesion. The simplified adhesives demonstrate the least predictable clinical performance compared with the three-step etch-and-rinse systems. In efforts to improve performance, various clinical procedures are being investigated, including rubbing the adhesive onto the demineralized dentin surface. A 24-month randomized controlled prospective study was conducted to assess the effect of vigorous rubbing action on a two-step adhesive i...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Restorative Dentistry Source Type: research

Resin-bonded bridges
(RBBs) or resin-retained bridges offer a minimally invasive option to replace missing teeth. RBBs’ major advantage is being conservative of tooth structure. The replacement is essentially reversible and does not compromise the abutment tooth. This is especially important for young patients. However, long-term prospective data are lacking concerning the success rates for RBBs, with 5-year survival rates for bridgework at 87.7% (resin-bonded prostheses) and 90% (conventional bridges), which are both lower than with implant-retained single crowns (94.5%). The role of RBBs in fixed prosthodontics was defined, and guidelines...
Source: Dental Abstracts - January 1, 2013 Category: Dentistry Tags: Restorative Dentistry Source Type: research