This paper aims to evaluate the effect of different surface treatments on surface topography, wettability, and shear bond strength of resin cement to glass ceramic. Methodology: For SBS test, 32 blocks (7x7x2 mm) of lithium disilicate were obtained and randomly divided into eight groups (four blocks per group) according to each surface treatment (HF 20 s, 60 s, 120 s + silanization/S or Scotch Bond Universal/ SBU) and the Monobond Etch & Prime-MEP application followed or not by SBU. On each treated surface ceramic block, up to four dual-curing resin cement cylinders were prepared and light-cured for 40s (N=120/n=15). The specimens were thermocycled (10,000 cycles, 5-55°C, 30 s) and the SBS test (50KgF, 0.5 mm/min) was performed. Furthermore, failure analysis, wettability, AFM, and SEM were carried out. SBS data (MPa) were analyzed using Student's t-test, two-way ANOVA, Tukey's test (5%) and Weibull's analysis. Results: For HF experimental groups, two-way ANOVA presented the factors "etching time" and "bonding agent" as significant (p<0.05). After silane application, the HF groups presented similar bond strength. SBU application compromised the SBS, except for 120s etching time (HF120sS: 23.39 a ±6.48 MPa; HF120sSBU: 18.76 a ±8.81MPa). For MEP groups, SBU application did not significantly affect the results (p=0.41). The MEP group presented the highest Weibull modulus (4.08 A) and they were statistically different exclusively from the HF20sSBU (0.58 B). Conclusion: The HF 20s, 60s, 120 s followed by silane, promoted similar resin-bond strength to ceramic and the SBU application after HF or MEP did not increase the SBS.

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O termo DTM é utilizado para definir condições que envolvem alterações da estrutura e/ou função do sistema mastigatório envolvendo a Articulação Temporomandibular (ATM) e estruturas musculoesqueléticas relacionadas. Apesar do desenvolvimento da Odontologia Preventiva durante as últimas décadas e do advento dos implantes ósseo integrados, ainda é possível encontrar indivíduos que necessitam de reabilitação com prótese total convencional. Independentemente da causa do edentulismo, as DTM podem acometer pacientes desdentados totais, portadores ou não de próteses. Inexplicavelmente, por um longo período os indivíduos desdentados não foram considerados, e ainda, no contexto atual, as publicações científicas com significativa relevância, referentes à prevalência de DTM em indivíduos desdentados totais, portadores ou não de próteses totais, ainda são escassas e controversas, não provendo subsídios para uma conclusão consistente. Tipo de estudo: estudo transversal. Objetivo: A partir de um estudo transversal avaliar e investigar a prevalência de DTM em indivíduos desdentados totais. Material e métodos: Foram avaliados 50 pacientes portadores de próteses totais, os quais foram agrupados de acordo com o diagnóstico clínico e psicológico através do RDC/TMD. Foi realizado teste de retenção e estabilidade das próteses e medidas de dimensão vertical de oclusão dos usuários de Prótese totais. Resultados: A presença de DTM foi encontrada em apenas 14% da amostra enquanto 86% dos pacientes relataram baixa estabilidade e retenção das próteses, DVO com padrão de normalidade em 70% dos pacientes e 62% dos pacientes foram diagnosticados com depressão moderada. Conclusão: Não houve associação entre DTM e uso de prótese total, já que apenas 14% da amostra apresentou DTM, porém 62% dos pacientes tiveram associação entre a presença de DTM e depressão.

Objective: To evaluate self-care efficacy on reduction of pain and wakefulness bruxism before the treatment with the stabilization splint. Methods: Sixty patients were divided into two groups: 30 belonging to the group that received the self-care guide (G1) and 30 belonging to the control group (G2) who were advised to wait for the beginning of the treatment with the stabilization splint. G1 received a self-care guide for immediate application before any intervention for bruxism treatment. The instructions were given as tips to follow every day for 1 month. Before being given to the patient, the guide was read aloud and clearly by the researcher and clarifying any patients doubts or questions. To evaluate the evolution of each group, the evaluation of physical symptoms occurred at 2 times (M1 and M2). G1 the efficacy of the self-care guide was tested through patient's report of pain sensation before and after the use of the guide. The control group (G2) was evaluated at M1 and M2, in order to obtain a parameter of pain evaluation in patients not previously subjected to the treatment. Results: The Self-care group presented statistical significance in relation to the group that did not receive self-care. Conclusion: According to the results obtained it can be verified that the patient's awareness about this problem and the application of a conservative therapy based on self-care was effective reducing the pain level of patients with wakefulness bruxism.