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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 9.
The permanent deformation of the Self Adjusting Files when used in canals of extracted teeth
ConclusionsDeformation of SAF files occurred mainly as detachment of one of the arches or struts at connection points on the odd side of the file. In no case did its mechanical failure result in metal fragment retention in the root canal.© 2013 International Endodontic Journal. Published by Blackwell Publishing Ltd
Source: International Endodontic Journal - January 30, 2013 Category: Dentistry Authors: E.T.R. Farmakis, G.G. Sotiropoulos, N. Pantazis, K. Kozyrakis Tags: Original Scientific Article Source Type: research
The difficult relationship between occlusal interferences and temporomandibular disorder – insights from animal and human experimental studies
Summary The aetiology of temporomandibular disorder (TMD) is multifactorial, and numerous studies have addressed that occlusion may be of great importance. However, whether occlusion plays a crucial role in the pathogenesis of TMD remains controversial. Study designs utilising animal models have been used to study the effects of artificial occlusal alterations. Experimental traumatic occlusion affects blood flow in the temporomandibular joint and results in changes in the condylar cartilage, and artificial occlusal interference induces masticatory muscle nociceptive responses that are associated with peripheral sensitisati...
Source: Journal of Oral Rehabilitation - January 30, 2013 Category: Dentistry Authors: Q. Xie, X. Li, X. Xu Tags: Review Article Source Type: research
Periodontal disease and gene‐expression levels of metalloendopeptidases in human buccal mucosal epithelium
ConclusionThe present study suggests that the severity of periodontal disease may be associated with the expression of metalloendopeptidase genes, including NEP, ECE1 and ADAM17, in the buccal mucosal epithelium.
Source: Journal of Periodontal Research - January 30, 2013 Category: Dentistry Authors: N. Kinoshita, S. Awano, A. Yoshida, I. Soh, T. Ansai Tags: Original Article Source Type: research
Transition to university: the role played by emotion
This article reports on a pilot study to examine the extent to which school to university transition is experienced as emotional. Understanding the role of emotion in this transition can inform mechanisms for student support. This qualitative study used focus group interviews to elicit insider accounts of transition. The pilot cohort consisted of a tutorial group of twenty‐eight students from within the class of one hundred and eight‐first‐year students at one Faculty of Dentistry in South Africa. Three focus group interviews were conducted. Issues identified in the literature as significant were used to analyse the ...
Source: European Journal of Dental Education - January 30, 2013 Category: Dentistry Authors: W. McMillan Tags: Original Article Source Type: research
What Chimpanzees Can Teach Us About Tooth Development And Weaning
For more than two decades, scientists have relied on studies that linked juvenile primate tooth development with their weaning as a rough proxy for understanding similar developmental landmarks in the evolution of early humans. New research from Harvard, however, is challenging those conclusions by showing that tooth development and weaning aren't as closely related as previously thought...
Source: Health News from Medical News Today - January 30, 2013 Category: Consumer Health News Tags: Dentistry Source Type: news
Open bite treatment using clear aligners.
Abstract Abstract A 35-year-old female patient with dentoalveolar open bite of 4 mm, molar Class I malocclusion, centered midlines, moderate crowding, and labial inclination of the lower incisor was treated with clear aligners to reduce protrusion and close the anterior open bite. The result showed that clear aligners were an effective method with which to correct this malocclusion. The treatment was complete after 18 months. The patient was satisfied with her new appearance and function. PMID: 23363479 [PubMed - as supplied by publisher]
Source: The Angle Orthodontist - January 30, 2013 Category: Dentistry Authors: Guarneri MP, Oliverio T, Silvestre I, Lombardo L, Siciliani G Tags: Angle Orthod Source Type: research
Local drug delivery of 0.5% azithromycin in the treatment of chronic periodontitis among smokers
ConclusionsWhen compared to the placebo, the adjunctive use of 0.5% AZM resulted in significant improvement in clinical outcome in the treatment of chronic periodontitis among smokers.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: AR Pradeep, P Bajaj, E Agarwal, NS Rao, SB Naik, N Kalra, N Priyanaka Tags: Scientific Article Source Type: research
Impact of different fluoride concentrations and pH of dentifrices on tooth erosion/abrasion in vitro
ConclusionsLiquid dentifrices with high F concentration appear to be a good option to prevent tooth wear.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: BM Moron, SSH Miyazaki, N Ito, A Wiegand, F Vilhena, MAR Buzalaf, AC Magalhães Tags: Scientific Article Source Type: research
Stress analysis of different post‐luting systems: a three‐dimensional finite element analysis
ConclusionsThe low elastic modulus of GFP generated lower stresses along its interface and higher stresses within the root dentine, therefore the probability of debonding and root fracture in the GFP group was lower.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: SA Romeed, SM Dunne Tags: Scientific Article Source Type: research
Oral conditions and their social impact among HIV dental patients, 18 years on
ConclusionsThe need for timely access to oral health care with a focus on prevention is essential for HIV‐positive individuals whose health is impacted by chronic disease, smoking and salivary hypofunction.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: SA Liberali, EA Coates, AD Freeman, RM Logan, L Jamieson, G Mejia Tags: ADRF Research Report Source Type: research
An in vitro study of silver and fluoride ions on remineralization of demineralized enamel and dentine
ConclusionsTopical application of silver or fluoride ions can increase the mineral density of demineralized enamel and dentine lesions during remineralization. The synergistic effect of silver and fluoride ions is relatively small.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: QH Zhi, ECM Lo, ACY Kwok Tags: Scientific Article Source Type: research
Associations between area‐level disadvantage and DMFT among a birth cohort of Indigenous Australians
ConclusionsLiving in under‐resourced communities was associated with greater DMFT among this disadvantaged population, indicating that policies aiming to reduce oral health‐related inequalities among vulnerable groups may benefit from taking into account factors external to individual‐level influences.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: LM Jamieson, LG Do, RS Bailie, SM Sayers, G Turrell Tags: Scientific Article Source Type: research
Stimulating the discussion on saliva substitutes: a clinical perspective
This article discusses some of the most commonly available products used for the symptomatic relief and preventive management of xerostomia. Amongst the plethora of products available to the patient suffering from xerostomia, no single product or product range adequately reproduces the properties of natural saliva and therefore consideration of patients' concerns, needs and oral health state should be taken into account when formulating a home care regime. With Australia's ageing population and its heavier reliance on medications and treatments which may induce xerostomia, oral health professionals are likely to encounter ...
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: F Dost, CS Farah Tags: Review Source Type: research
The oral health status, practices and knowledge of pregnant women in south‐western Sydney
ConclusionsThe participants reported significant barriers to obtaining dental care including limited access to affordable dental services and lack of awareness about the importance of maternal oral health. The findings suggest the need for preventive strategies involving dentists and antenatal providers to improve maternal oral health in Australia.
Source: Australian Dental Journal - January 30, 2013 Category: Dentistry Authors: A George, M Johnson, A Blinkhorn, S Ajwani, S Bhole, AE Yeo, S Ellis Tags: Scientific Article Source Type: research
Using e‐learning to train dentists in the development of standardised oral health promotion interventions for persons with disability
ConclusionsThe results indicate that the online training course helped participants to increase self‐efficacy and to provide interventions in institutions. This study could have implications for both undergraduate and postgraduate dental education in France.
Source: European Journal of Dental Education - January 30, 2013 Category: Dentistry Authors: C. Catteau, D. Faulks, A. Mishellany‐Dutour, V. Collado, S. Tubert‐Jeannin, C. Tardieu, P. Hugues, V. Roger‐Leroi, M. Hennequin Tags: Original Article Source Type: research
Don't tell patients they'll look better after cosmetic surgery: New guidelines that 'manage expectations' are unveiled
The Royal College of Surgeons guidance also states that only surgeons should provide cosmetic surgery and only properly trained doctors, dentists and nurses should give treatments such as Botox.
Source: the Mail online | Health - January 29, 2013 Category: Consumer Health News Source Type: news
Fine-Mapping of 5q12.1–13.3 Unveils New Genetic Contributors to Caries
Caries Res 2013;47:273–283 (DOI:10.1159/000346278)
Source: Caries Research - January 29, 2013 Category: Dentistry Source Type: research
Method Patent Issued for Investigational New Class of Pain Medication
Source: NIDCR News Releases - January 29, 2013 Category: Dentistry Source Type: news
VIDEO: Surgeons urge new guidelines on botox
Only trained doctors, nurses and dentists should provide non-surgical cosmetic treatments such as Botox, according to the Royal College of Surgeons.
Source: BBC News | Health | UK Edition - January 29, 2013 Category: Consumer Health News Source Type: news
Upper airway changes in Pierre Robin sequence from childhood to adulthood
ConclusionsUpper airway dimensions in children with PRS improve with time, except for the oropharyngeal airway. Despite large interindividual variation, the mean remained in the lower reaches of normality described in other studies. Thus, further research should investigate the prevalence of obstructive sleep apnoea in adults with PRS.
Source: Orthodontics and Craniofacial Research - January 29, 2013 Category: Dentistry Authors: C. B. Staudt, W. M. Gnoinski, T. Peltomäki Tags: Original Article Source Type: research
Different mandibular first molar shapes according to groove and cusp configuration in relation to suggested bracket position.
Abstract The aim of this study was to explore the shape differences in the mandibular first molars through orthographic measurements using three-dimensional (3D) virtual models, and study the possibility of new morphologic categories that require more than subjective visual inspection. A total of 164 mandibular first molars with five cusps were selected for classification. Using 3D laser scanning and reconstruction software, virtual casts were constructed. After several linear and angular measurements on the virtual occlusal plane, the teeth were clustered using the partitioning around medoids methods-an unsupervis...
Source: European Journal of Orthodontics - January 29, 2013 Category: Dentistry Authors: Park DE, Kim HK, Lim YS, Nakatsuka M, Kwon HB, Han SH, Park YS Tags: Eur J Orthod Source Type: research
Five‐year multicenter study of magnetic attachments used for natural overdenture abutments
Summary The purpose of this study was to examine a longitudinal clinical performance of magnetic attachments used for natural overdenture abutments. The study included 131 patients who had used removable prostheses (complete overdentures 31%, partial dentures 69%) more than 5 years (40–90 years old) with 211 magnetic attachments on natural abutments (Magfit 400 or 600; Aichi Steel co., Aichi, Japan) treated in 15 clinics using a standardized protocol. Analyses were performed on the degree of patient satisfaction regarding retention, complications of magnets (corrosion, detachment from denture base), abutments (pain dur...
Source: Journal of Oral Rehabilitation - January 29, 2013 Category: Dentistry Authors: T. Gonda, T. C. Yang, Y. Maeda Tags: Original Article Source Type: research
Determinants of change in oral health‐related quality of life over 7 years among older Japanese
This study examined changes in oral health‐related quality of life (OHRQoL) among Japanese elderly over a 7‐year period. A sample of independently living individuals (aged 60+ years) underwent a questionnaire and dental examination at baseline and 7 years afterwards. The Geriatric Oral Health Assessment Index (GOHAI) was used to assess the impact of oral conditions. Occlusal force and salivary flow were also assessed. Of the 411 participants assessed at baseline, 130 (31·6%) accepted to participate after 7 years. There were no significant differences between those lost to follow‐up and those assessed at 7 years,...
Source: Journal of Oral Rehabilitation - January 29, 2013 Category: Dentistry Authors: K. Enoki, K. Ikebe, K.‐I. Matsuda, M. Yoshida, Y. Maeda, W. M. Thomson Tags: Original Article Source Type: research
'Ban non-medics from giving Botox'
Only trained doctors, nurses and dentists should provide non-surgical cosmetic treatments like Botox, say surgeons.
Source: BBC News | Health | UK Edition - January 28, 2013 Category: Consumer Health News Source Type: news
How ZocDoc turned a ruptured eardrum into a venture-backed bid to shake up the health care system
Ever try to make an appointment with a physician, dentist or medical specialist in New York? Often there’s a three week wait for cardiologists, dermatologists and gynecologists. And often it requires multiple calls to reach a specialist who takes the right health plan and has an opening. Speeding up making medical appointments led to the genesis of ZocDoc, which is headquartered in SoHo. ZocDoc has raised $95 million in venture capital funding. It was launched in 2007 by businessman Cyrus Massoumi,…
Source: bizjournals.com Health Care:Physician Practices headlines - January 28, 2013 Category: American Health Authors: Gary M. Stern Source Type: research
Mineralisation of Developmentally Hypomineralised Human Enamel in vitro
Caries Res 2013;47:259–263 (DOI:10.1159/000346134)
Source: Caries Research - January 28, 2013 Category: Dentistry Source Type: research
The Hayward's new Light Show
This dazzling, frazzling light show takes visitors to the moon – and beyond. It's a bit like being punched in the face, warns Adrian SearleTall columns of light are pulsing and throbbing, brightening and dimming in accordance with messages dictated during seances with ouija boards and translated into a poem by James Merrill. You don't need to know all that, though, to get the feeling that there is some hidden force at work in Cerith Wyn Evans's electrifying light sculpture. Meanwhile, nearby, a white fluorescent scribble by François Morellet rises from the floor like a dancer frozen in mid-move.Light Show, at the Haywar...
Source: Guardian Unlimited Science - January 28, 2013 Category: Science Authors: Adrian Searle Tags: The Guardian Art Culture Art and design Reviews Exhibitions Features Source Type: news
The Eco-Dentistry Association Will Hold Industry's First Green Dentistry Conference, 3-4 May 2013, Utah
Ground-breaking event will focus on opportunities presented by high-tech, green, wellness based dentistry The Eco-Dentistry Association® announced last week that it will hold the industry's first dental conference devoted exclusively to high-tech, environmentally sound dental practices. The event will take place May 3 and 4, 2013, at the stunning, eco-friendly Robert Redford Conference Center in Sundance, Utah, part of the Sundance Resort. Continuing Education credits will be available and attendance is limited to the first 100 registrants...
Source: Health News from Medical News Today - January 28, 2013 Category: Consumer Health News Tags: Conferences Source Type: news
How do dentists and their teams incorporate evidence about preventive care? An empirical study
ConclusionsThe findings from this study show that with considerable effort, motivation and coordination, it is possible for dental practices to work against the dental ‘mainstream’ and implement prevention as their clinical norm. This study has shown that dental practice is not purely scientific, but it includes cultural, social, and economic resources that interfere with the provision of preventive care.
Source: Community Dentistry and Oral Epidemiology - January 28, 2013 Category: Dentistry Authors: Alexandra Sbaraini, Stacy Marie Carter, Robin Wendell Evans, Anthony Blinkhorn Tags: Original Article Source Type: research
The healing of dental extraction sockets in patients with Type 2 diabetes on oral hypoglycaemics: a prospective cohort
ConclusionsThe traditional view that diabetics have increased delayed healing was not supported. Type 2 diabetics on oral hypoglycaemics should be treated the same as non‐diabetic patients for extractions.
Source: Australian Dental Journal - January 28, 2013 Category: Dentistry Authors: S Huang, H Dang, W Huynh, PJ Sambrook, AN Goss Tags: Scientific Article Source Type: research
Female adolescent craniofacial growth spurts: real or fiction?
Abstract The purpose of the study is to determine whether the various aspects of the craniofacial complex exhibit female adolescent growth spurts. Multilevel polynomial models were used to estimate the growth curves of a mixed-longitudinal sample of 111 untreated females 10-15 years of age. To evaluate the horizontal and vertical movements of the individual landmarks relative to stable structures, the tracings were superimposed on the natural reference structures in the anterior cranial base. The horizontal and vertical growth changes of four landmarks and the changes of three traditional linear measurements were e...
Source: European Journal of Orthodontics - January 28, 2013 Category: Dentistry Authors: Buschang PH, Jacob HB, Demirjian A Tags: Eur J Orthod Source Type: research
Morphological evidences of Bio‐Oss® colonization by CD44‐positive cells
ConclusionIn conclusion, images compatible with osteone colonized by osteocytes CD44 positive and neovascularization in ABB particles were observed after 6 months of graft maturation. These biologic events have not previously been morphologically and immunohistochemically documented.
Source: Clinical Oral Implants Research - January 28, 2013 Category: Dentistry Authors: Pablo Galindo‐Moreno, Pedro Hernández‐Cortés, José Aneiros‐Fernández, Miguel Camara, Francisco Mesa, Stephen Wallace, Francisco O'Valle Tags: Original Article Source Type: research
When can dentists supply medicines?
Source: North West Medicines Information Centre Area: Evidence > Medicines Q & A The Human Medicines Regulations 2012 allows dentists to issue any medicine (PoM, P or GSL) directly to a patient but this only applies if patients are receiving private treatment. The current NHS terms of service do not allow dentists to supply any medicines, other than those for immediate use before the issue of a prescription, directly to a patient. The NHS regulations as set out in the NHS Act 2006 do not allow dentists providing an NHS service to provide any form of pharmaceutical service. Prescription only medicines issued by...
Source: NeLM - Medicines Q and A - January 28, 2013 Category: Drugs & Pharmacology Source Type: news
The impact of socioenvironmental characteristics on domains of oral health-related quality of life in Brazilian schoolchildren
Conclusions: Clinical and socio-environmental factors had different impacts on domains of oral health-related quality of life, demonstrating the need to consider these conditions in planning strategies for the oral health of schoolchildren.
Source: BMC Oral Health - Latest articles - January 28, 2013 Category: Dentistry Authors: Janice de PaulaIsabel LeiteAnderson de AlmeidaGlaucia AmbrosanoFábio Mialhe Source Type: research
Advances in Laserology - Selected Papers of Laser Florence 2010:
The 50th Birthday of Laser Medicine Worldseries:Atomic, Molecular, Chemical PhysicsLaser Florence 2010 is the annual Congress of the International Academy Laser Medicine and Surgery. The year 2010 is the fiftieth birthday of Laser and we celebrated it with a special edition. As usual researchers and doctors were shown new data immediately available for practical use, in different topics: Dentistry, Dermatology, Neurology, Rehabilitation and Sport Injuries, ENT, Phlebology, ...
Source: Springer Medicine titles - January 27, 2013 Category: Databases & Libraries Tags: Health Informatics Source Type: news
Tooth Root Formation Requires Beta-Catenin Molecule
Today, the International and American Associations for Dental Research (IADR/AADR) published a paper titled "Ã�-catenin is Required in Odontoblasts for Tooth Root Formation." The paper, written by lead authors Tak-Heun Kim and Cheol-Hyeon Bae, Chonbuk National University Korea School of Dentistry, Laboratory for Craniofacial Biology, is published in the IADR/AADR Journal of Dental Research. The tooth root, together with the surrounding periodontium, maintains the tooth in the jaw. The root develops after the crown forms, a process called morphogenesis...
Source: Health News from Medical News Today - January 27, 2013 Category: Consumer Health News Tags: Dentistry Source Type: news
Combined surgical therapy of advanced peri‐implantitis lesions with concomitant soft tissue volume augmentation. A case series
ConclusionThe combined surgical procedure investigated may be effective in controlling advanced peri‐implantitis lesions without compromising the overall esthetic outcome in the short term.
Source: Clinical Oral Implants Research - January 27, 2013 Category: Dentistry Authors: Frank Schwarz, Narja Sahm, Juergen Becker Tags: Original Article Source Type: research
Combined Osteotome‐Induced Ridge Expansion and Guided Bone Regeneration Simultaneous with Implant Placement: A Biometric Study
ConclusionsWithin the limitations of this study, we suggest that the combined osteotome‐induced ridge expansion and guided bone regeneration simultaneous with implant placement is a reliable procedure with reduced morbidity and may offer an alternative in suitable situations.
Source: Clinical Implant Dentistry and Related Research - January 26, 2013 Category: Dentistry Authors: Roni Kolerman, Joseph Nissan, Haim Tal Tags: Original Article Source Type: research
The influence of simulated clinical use on the flexibility of rotary ProTaper Universal, K3 and EndoSequence nickel‐titanium instruments
ConclusionsThe flexibility of rotary ProTaper Universal, K3, and EndoSequence NiTi instruments, measured in bending tests, was not adversely affected by simulated clinical use in curved root canals.© 2013 International Endodontic Journal. Published by Blackwell Publishing Ltd
Source: International Endodontic Journal - January 26, 2013 Category: Dentistry Authors: A. C. D. Viana, E. S. J. Pereira, M. G. A. Bahia, V. T. L. Buono Tags: Original Scientific Article Source Type: research
Testing manual dexterity using a virtual reality simulator: reliability and validity
Abstract Virtual reality dental training simulators, unlike traditional human‐based assessment, have the potential to enable consistent and reliable assessment. The purpose of this study was to determine whether a haptic simulator (IDEA Dental®) could provide a reliable and valid assessment of manual dexterity. A total of 106 participants were divided into three groups differing in dental manual dexterity experience: (i) 63 dental students, (ii) 28 dentists, (iii) 14 non‐dentists. The groups, which were expected to display various performance levels, were required to perform virtual drilling tasks in different geometr...
Source: European Journal of Dental Education - January 26, 2013 Category: Dentistry Authors: G. Ben‐Gal, E. I. Weiss, N. Gafni, A. Ziv Tags: Original Article Source Type: research
Massive lost of soft tissue after implant placement: recommendations?
As you can see from the clinical photograph the patient has suffered massive soft and hard tissue loss at that site. any recommendations how I can proceed?
Source: Dental Implants Discussed by Experts - January 26, 2013 Category: Dentistry Authors: osseonews Tags: Dental Implant Cases Source Type: news
3 implants for mandibular overdenture: is this more stable?
In the past I have only used 2-implants to retain mandibular overdentures but I am wondering if 3-implants would triangulate the forces and be more stable and more retentive.
Source: Dental Implants Discussed by Experts - January 26, 2013 Category: Dentistry Authors: osseonews Tags: Dental Implants Q&A Source Type: news
Diabetes mellitus and inflammatory pulpal and periapical disease: a review
Abstract Diabetes Mellitus (DM) is one of the most common metabolic disorders. DM is characterized by hyperglycemia, resulting in wound healing difficulties and systemic and oral manifestations, which have a direct effect on dental pulp integrity. Experimental and clinical studies have demonstrated a higher prevalence of periapical lesions in uncontrolled diabetic patients. The influence of DM in periapical bone resorption and its impact on dental intervention of such patients are reviewed, and its aetiology and pathogenesis are analyzed at molecular level. Pulps from diabetics have the tendency to present limited dental c...
Source: International Endodontic Journal - January 26, 2013 Category: Dentistry Authors: S. M. F. Lima, D. C. Grisi, E. M. Kogawa, O. L. Franco, V. C. Peixoto, J. F. Gonçalves‐Júnior, M. P. Arruda, T. M. B. Rezende Tags: Review Source Type: research
In vivo comparison between laser‐treated and grit blasted/acid etched titanium
ConclusionLaser surface treatment gives the same results to the grit‐blasting/acid‐etched method and thus is a valid alternative to conventional roughening for dental implant materials.
Source: Clinical Oral Implants Research - January 25, 2013 Category: Dentistry Authors: Ljupcho Prodanov, Edwin Lamers, Joop Wolke, Richard Huiberts, John A. Jansen, X. Frank Walboomers Tags: Original Article Source Type: research
Ex vivo evaluation of various instrumentation techniques and irrigants in reducing E. faecalis within root canals
ConclusionsNo significant differences in terms of reduction in microbial counts were observed between single‐file techniques (SAF and Reciproc) and serial Ni‐Ti instrumentation technique (ProTaper) in combination with irrigants.© 2013 International Endodontic Journal. Published by Blackwell Publishing Ltd
Source: International Endodontic Journal - January 25, 2013 Category: Dentistry Authors: F Basmaci, M D. Öztan, M Kiyan Tags: Original Scientific Article Source Type: research
Biotrial Plans to Build NA Headquarters in Newark, NJ
Coming this spring, a French pharmaceutical research company plans to break ground on its North American headquarters in a technology park in Newark, N.J., adjacent to the University of Medicine and Dentistry of New Jersey, the New Jersey Institute of Technology and Rutgers University-Newark.
Source: PharmaManufacturing.com - January 25, 2013 Category: Pharmaceuticals Authors: Pharma Manufacturing Source Type: news
Mercury | video | GrrlScientist
What do felt hats, tuna and St Isaac's cathedral have in common?This week's chemical element is mercury, which has the atomic number 80 and the symbol Hg. Its symbol comes from its former name, hydrargyrum (Greek for "water silver"), and it is commonly known as quicksilver.Mercury is remarkable because it is the only metal that is liquid at room temperature. It is a dense, lustrous grey metal. Mercury is extremely rare in the Earth's crust and in the wild, it typically is concentrated near volcanically active areas, either as the pure metal or in a number of minerals. Although widely used in the past in batteries, fluoresc...
Source: Guardian Unlimited Science - January 25, 2013 Category: Science Authors: GrrlScientist Tags: Blogposts guardian.co.uk Science Source Type: news
A Small Amount of Singlet Oxygen Generated via Excited Methylene Blue by Photodynamic Therapy Induces the Sterilization of Enterococcus faecalis
Conclusions: Our findings suggest that 0.001%–0.01% of MB is the most effective range for generating 1O2 during the application of antimicrobial photodynamic therapy. At least 35.2 μmol/L generated 1O2 was necessary to achieve the sterilization of E. faecalis.
Source: Journal of Endodontics - January 25, 2013 Category: Dentistry Authors: Chiaki Komine, Yasuhisa Tsujimoto Tags: Technology Source Type: research
Outcomes of Surgical Endodontic Treatment Performed by a Modern Technique: An Updated Meta-analysis of the Literature
Conclusions: Surgical endodontic treatment performed in a modern technique is a viable treatment option. The type of retrofilling material and magnification device may affect the outcome. Additional large-scale prospective clinical studies are needed to further evaluate possible predictors of success and failure.
Source: Journal of Endodontics - January 25, 2013 Category: Dentistry Authors: Igor Tsesis, Eyal Rosen, Silvio Taschieri, Yoel Telishevsky Strauss, Valentina Ceresoli, Massimo Del Fabbro Tags: Clinical Research Source Type: research
The Caries Assessment and Treatment (CAST) instrument
ConclusionThe CAST instrument for use in epidemiological surveys is very promising. Face and content validation is obtained. Construct validity and reliability testing will be completed soon. A structure for reporting results in a comprehensive, pragmatic and easily understood way is being developed.
Source: Community Dentistry and Oral Epidemiology - January 25, 2013 Category: Dentistry Authors: Jo E. Frencken, Ana Luiza Souza, Wil J.M. Sanden, Ewald M. Bronkhorst, Soraya Coelho Leal Tags: Original Article Source Type: research