Relationship Between Quality of Life Related to Voice and Oral Health in Elderly People.

This preliminary study investigated the influence of different oral prosthodontic interventions on quality of life related to voice and oral health in elderly people and the relation between these conditions. Forty-five elderly people who had completed prosthodontic rehabilitation treatments were divided into three groups according to dental conditions and answered two protocols: voice-related quality of life and oral health impact profile. Despite the small sample size, the elderly people in this study presented no differences between the groups and showed a relationship between oral and vocal health aspects.

Current all-ceramic systems in dentistry: a review.

This article describes the ceramic systems and processing techniques available today in dentistry. It aims to help clinicians understand the advantages and disadvantages of a myriad of ceramic materials and technique options. The microstructural components, materials' properties, indications, and names of products are discussed to help clarify their use. Key topics will include ceramics, particle-filled glasses, polycrystalline ceramics, CAD/CAM, and adhesive cementation.

Effect of preheating on microhardness and viscosity of 4 resin composites.

OBJECTIVE: This study was undertaken to determine the effect of temperature on the microhardness and viscosity of 4 resin composite materials. METHODS: To investigate microhardness, samples of each of the 4 composite materials, prepared by standard insertion of resin into prefabricated moulds, were divided into 2 groups (n = 10 per group). On the first group, the resin composite materials were inserted into the moulds at room temperature and cured. On the second group, the resin composite materials were pre-heated in a heating device, inserted into the moulds and immediately cured. Microhardness after curing (both immediately and after 24 hours of storage) was determined (using a 300 g load applied for 10 seconds) and averaged for 5 randomly selected points on the top and bottom surfaces of each sample. To investigate viscosity, 0.5 g samples of room temperature or preheated resin composite (n = 15 per group) were placed under a 454 g load for 45 seconds before light-curing (40 seconds). After curing, each sample was photographed and the surface area calculated. Data were analyzed by t tests or one-way analysis of variance and Tukey's test. RESULTS: Preheating the resin composites increased the microhardness and decreased the viscosity of the samples. Filtek Supreme Ultra resin composite had the highest mean microhardness, and Vit-l-escence resin composite had the lowest viscosity. CONCLUSIONS: The effects of preheating resin composites may allow easier placement of restorations and greater monomer conversion.

Inter-relação odontologia restauradora e tecidos periodontais: revisão dos conceitos atuais / Relationship of restorative dentistry and periodontal tissues: a review of currents concepts

Restaurar dentes com lesões cariosas e/ou fraturas que se encontram muito próximas às margens gengivais. Para que a restauração possa ser confeccionada corretamente, é necessário que o CD conheça a biologia dos tecidos para relacioná-los corretamente com as margens das restaurações. Para isso, é necessário ter conhecimento básico das estruturas que envolvem os dentes (distâncias biológicas) e conhecimento de anatomia dental para que não sejam criados nichos que favoreçam o acúmulo de bactérias e perda do mecanismo homeostático. Dessa forma, esse artigo teve por objetivo discorrer de forma básica sobre conceitos e indicações no que se refere à integração dos tecidos periodontais com os procedimentos restauradores.

Pressure pain threshold in the detection of masticatory myofascial pain: an algometer-based study.

AIMS: To compare pressure pain threshold (PPT) values for masticatory muscles in patients with signs and symptoms of myofascial pain and in asymptomatic individuals. METHODS: Fifty women with masticatory myofascial pain comprised the symptomatic group (group 1), while 49 TMD symptom-free women were selected as controls (group 2). The PPT was obtained with the aid of an algometer by applying pressure to the masseter and to the anterior, middle, and posterior temporalis. A 90.8% specificity value was used to determine the appropriate PPT cutoff values for all 4 muscles studied. Receiver operator characteristic (ROC) curve areas and the likelihood ratio (LR) were also evaluated. RESULTS: The 3-way ANCOVA test (group, muscle, and side) revealed a significantly lower PPT for all muscles in the symptomatic group (P < .001). The lowest overall PPT was found for the masseter muscle, followed by the anterior, middle, and posterior temporalis (P < .001). The 90.8% specificity was obtained with PPT values of 1.5 kgf/cm2 for the masseter, 2.47 kgf/cm2 for the anterior temporalis, 2.75 kgf/cm2 for the middle temporalis, and 2.77 kgf/cm2 for the posterior temporalis. The anterior temporalis had the highest LR. ROC curve areas of 0.84, 0.92, 0.90, and 0.90 were obtained for the masseter, anterior, middle, and posterior temporalis, respectively. CONCLUSION: The masseter and temporalis muscles require different pressures for distinguishing masticatory myofascial pain patients from asymptomatic individuals. Because the highest sensitivity (77%) and LR were found for the anterior temporalis, this muscle was considered to have the most suitable discriminative capacity.

Condicionamento gengival: estética em tecidos moles / Gingival conditioning: esthetics of soft tissue

Uma das condutas clínicas mais satisfatórias e simples de ser realizada para otimizar a estética em prótese sobre implante e em prótese parcial fixa é o condicionamento do tecido gengival para a formaçäo da papila interdentária ou interimplantar e a reconstituiçäo do arco côncavo gengival. Com isso, o perfil de emergência do elemento protético e do pôntico assemelham-se ao dos dentes naturais, escondendo a linha cervical da coroa e eliminando os chamados "buracos negros". Para isto, se utilizam as técnicas de pressäo gradual, escarificaçäo e eletrocirurgia, embora esta näo seja mais indicada. O objetivo deste trabalho é discutir algumas técnicas de condicionamento, suas indicaçöes e contra-indicaçöes. Avalia-se, também, quais os requisitos básicos para o sucesso das mesmas, sendo o controle de placa o principal deles. Considerando-se que näo há diferença entre as técnicas para o sucesso, existem condiçöes individuais e limitaçöes que devem ser avaliadas criteriosamente