59 research outputs found
Effect of pontic framework design on the fracture resistance of implant-supported all-ceramic fixed partial dentures
Low-Fusing Porcelain Glaze Application on 3Y-TZP Surfaces can Enhance Zirconia-Porcelain Adhesion
A Systematic Approach to Restore Grossly Decayed Multirooted Teeth: Split Cast Post and Core
Survey of UK dentists regarding the use of CAD/CAM technology
Statement of the problem Digital workflows (CAD/CAM) have been introduced in dentistry during recent years. No published information exists on dentists' use and reporting of this technology.Purpose The purpose of this survey was to identify the infiltration of CAD/CAM technology in UK dental practices and to investigate the relationship of various demographic factors to the answers regarding use or non-use of this technology.Materials and methods One thousand and thirty-one online surveys were sent to a sample of UK dentists composing of both users and non-users of CAD/CAM. It aimed to reveal information regarding type of usage, materials, perceived benefits, barriers to access, and disadvantages of CAD/CAM dentistry. Statistical analysis was undertaken to test the influence of various demographic variables such as country of work, dentist experience, level of training and type of work (NHS or private).Results The number of completed responses totalled 385. Most of the respondents did not use any part of a digital workflow, and the main barriers to CAD/CAM use were initial costs and a lack of perceived benefit over conventional methods. Dentists delivering mostly private work were most likely to have adopted CAD/CAM technology (P <0.001). Further training also correlated with a greater likelihood of CAD/CAM usage (P <0.001). Most users felt that the technology had led to a change in the use of dental materials, leading to increased use of, for example, zirconia and lithium disilicate. Most users were trained either by companies or self-trained, and a third felt that their training was insufficient. The majority of respondents (89%) felt that CAD/CAM had a big role to play in the future.Conclusion Most of the respondents did not use any part of a digital workflow. However, the majority of surveyed dentists were interested in incorporating CAD/CAM into their workflow, while most believed that it will have a big role in the future. There are still some concerns from dentists about the quality of chairside CAD/CAM restorations while the costs are still in the main hugely prohibitive (especially for NHS dentistry)
Bruxismo do sono: possibilidades terapĂȘuticas baseadas em evidĂȘncias Sleep bruxism: therapeutic possibilities based in evidences
INTRODUĂĂO: o bruxismo do sono (BS) Ă© uma desordem de movimentos estereotipados e periĂłdicos, associados ao ranger e/ou apertar de dentes durante o sono, decorrentes da contração rĂtmica dos mĂșsculos mastigatĂłrios. Essa condição nĂŁo Ă© uma doença, porĂ©m quando exacerbada pode ocasionar desequilĂbrio e alteração das estruturas orofaciais. Dessa forma, surge a necessidade de se obter terapĂȘuticas efetivas e seguras para o controle e o manejo do paciente bruxĂŽmano. As alternativas de tratamento variam desde terapĂȘuticas orodentais e farmacolĂłgicas atĂ© tĂ©cnicas comportamentais-cognitivas. OBJETIVOS: atravĂ©s de uma revisĂŁo sistemĂĄtica da literatura, tendo como bases de pesquisa a Medline, Cochrane, Embase, Pubmed, Lilacs e BBO, no perĂodo compreendido entre 1990 e 2008, e com enfoque em estudos clĂnicos randomizados e quasi-randomizados, revisĂ”es sistemĂĄticas e meta-anĂĄlises, esse trabalho teve como objetivo analisar e discutir mĂ©todos de tratamento para o BS. RESULTADOS: pela anĂĄlise da literatura verifica-se que existe uma grande quantidade de opçÔes terapĂȘuticas para o BS, porĂ©m muitas das terapias nĂŁo tĂȘm suporte cientĂfico que as sustente. Assim, a escolha terapĂȘutica deve ser pautada em evidĂȘncias cientĂficas e no bom senso clĂnico, objetivando uma melhora na qualidade de vida do paciente bruxĂŽmano.<br>INTRODUCTION: Sleep bruxism (SB) is defined as a stereotyped and periodic movement disorder, characterized by tooth grinding and/or clenching occurring during sleep, associated with rhythmic masticatory muscle activity. This condition isn't a disease, but when exacerbated may cause an unbalance and changing of orofacial structures. Thus, it is necessary to obtain effective and safe treatments for the control and management of the bruxist patient. The treatment alternatives ranges from oral devices to pharmacological and cognitive-behavioral techniques. OBJECTIVES: This study, through a systematic literature review, having as research bases MEDLINE, Cochrane, EMBASE, Pubmed, Lilacs and BBO, between the years of 1990 and 2008, with focus in randomized and quasi-randomized clinical trials, systematic reviews and meta-analysis, had as objective to analyze and discuss possibilities of treatment for sleep bruxism. RESULTS: According to the analysis of literature there are a lot of treatment options for the SB, but many of the therapies have no scientific support. Thus, the chosen therapy should be based on scientific evidences and in clinical common sense, to an improvement in quality of life of the bruxist patient
Effect of Framework Shape on the Fracture Strength of Implant-Supported All-Ceramic Fixed Partial Dentures in the Molar Region
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