Robinsom Viégas Montenegro

Efeito da Partícula de Carga e do Tempo de Armazenamento sobre a Microdureza de Superfície de Compósitos Restauradores Estéticos

Resumen pt: Objeti vo: Avaliar o efeito de diferentes tamanhos de parti culas de carga e diferentes tempos de armazenagem na dureza superfi cial de tres compositos r...

Retrospective review of patients referred to a temporomandibular dysfunction care setting of a Brazilian public university

Background and oBjectives: The objective of this study is to describe the restrospective analysis of medical records of patients with temporomandibular disorder in a healthcare service of a Brazilian public university. The prevalence of signs and symptoms of temporomandibular disorder, associated factors, diagnosis and observations related to the treatment were recorded. MetHods: Two hundred and thirteen medical records were assessed by one single surveyor from March 2013 to December 2014. Information about sociodemographic factors, prevalence of symptoms of temporomandibular disorder and treatment need were collected (Fonseca Anamnestic Index), clinical examination, diagnosis, treatments and referral to other professionals. resuLts: The majority of patients were female (81.7%), single (53.0%), students (23.3%) between 20 and 29 years of age (26.8%). Pain was reported by 50.4% of patients. According to FAI, 41.8% of patients were classified with severe synptoms of temporomandibular disorder and 73.2% identified with the need of treatment. Presence of temporomandibular disorder symptoms (p = 0.001) and need of treatment (p <0.001) were significantly associated to the female gender. The most prevalent diagnosis was muscle temporomandibular disorder (41.5%) and the most affected muscle was the masseter (21.3%). The most common treatments were occlusal splint (27.6%) and counseling (22.6%). concLusion: The greater demand for temporomandibular disorder treatment came from young patients, single, female, complaining from pain. The prevalence of temporomandibular disorder symptoms was high, muscular disorders was the most Retrospective review of patients referred to a temporomandibular dysfunction care setting of a Brazilian public university Revisão retrospectiva de pacientes encaminhados a um serviço de disfunção temporomandibular de uma universidade pública brasileira Wellington Pereira de Moura1, Pâmela Lopes Pedro da Silva2, George Azevedo Lemos3, Paulo Rogério Ferreti Bonan4, Robinsom Viégas Montenegro2, André Ulisses Dantas Batista2 1. Universidade Federal da Paraíba, João Pessoa, PB, Brasil. 2. Universidade Federal da Paraíba, Departamento de Restauração Dental, João Pessoa, PB, Brasil. 3. Universidade Estadual de Campinas, Campinas, SP, Brasil. 4. Universidade Federal da Paraíba, Departamento Clínico e Odontologia Social, João Pessoa, PB, Brasil. Submitted in October 24, 2016. Accepted for publication in May 15, 2017. Conflict of interests: none – Sponsoring sources: none. correspondence to: Cidade Universitária, s/n Castelo Branco 58051-900 João Pessoa, PB, Brasil. E-mail: lemos.george@yahoo.com.br

Resistência de união de compósitos do tipo Bulk Fill: análise in vitro

Introducao A classe dos compositos Bulk-Fill tem obtido popularidade com a promessa de ser fotopolimerizado efetivamente em camadas de ate quatro milimetros, fato que contrasta com os dois milimetros requisitados para os compositos convencionais para manutencao da adesividade da restauracao. Objetivo O objetivo deste estudo foi analisar a resistencia de uniao a dentina de restauracoes confeccionadas com compositos do tipo Bulk-Fill. Material e metodo Foram utilizados 15 terceiros molares humanos, cuja superficie oclusal foi cortada e a dentina foi exposta. Esses elementos dentarios foram divididos em tres grupos conforme o material restaurador utilizado. O sistema adesivo usado foi o mesmo para todos os grupos. Posteriormente, os dentes restaurados foram cortados para originar palitos de aproximadamente 1 mm de largura, 1 mm de profundidade e 8 mm de altura, que foram fixados as garras do dispositivo de microtracao. Foram utilizados dez palitos de cada dente, totalizando 50 palitos por grupo. Os dados de resistencia de uniao a microtracao foram expressos em megapascal (MPa). As fraturas foram analisadas em microscopio optico. Os dados foram analisados atraves dos testes ANOVA e Tukey (p<0,05). Resultado Os tres compositos estudados diferiram estatisticamente entre si (p<0,000). Os compositos Bulk-Fill apresentaram resistencias de uniao semelhantes e superiores ao convencional (p<0,000). A fratura mais encontrada foi a mista, em todos os grupos. Conclusao Os compositos Bulk-Fill apresentaram maiores valores de resistencia de uniao com a tecnica restauradora utilizada.

RESISTÊNCIA ADESIVA DO CIMENTO DE IONÔMERO DE VIDRO A RESTAURAÇÕES EM RESINA COMPOSTA – REVISÃO DA LITERATURA

of low toxicity to pulp tissue they are commonly used as a protector of the pulp-dentin complex under restorative materials as amalgam and composite resin The present study aimed to verify, through literature review, the bond strength of glass ionomer cement to composite resin restorations highlighting questions about pre- treatment of the surface of the material, effect of the cure process and available techniques. The review was conducted in the following databases: PUBMED, CAPES - Periodicals, SCIELO, BBO, BIREME and LILACS. The selection of the papers was performed using the following descriptors in Portuguese/English: cimento de ionomero de vidro/glass ionomer cement, resina composta/composite resin, resistencia de uniao/bond strength, propriedades mecânicas/mechanical properties. Articles published between 1995 and 2010 were analyzed. Initially, 110 articles were selected and, after carefully filtering, 23 articles were separated. Among various options presented in the literature to promote adhesion between the glass ionomer cement and composite resin it can be observed that different variables are involved. The composition of the cement, the elapsed time between placing the cement and the completion of the restoration, and the technique are important factors. Bonding between resin modified cement and composite resin presented higher values than for the conventional cement. Bonding between ionomer cement and composite resin was indicated to be performed immediately, regardless of the cement. The use of self-etching adhesives increased the bond strength when applied before the initial setting of the glass ionomer. Adhesives with a composition similar to that of the resin-modified ionomer increased the bond strength after the initial setting of cement. The technique of co-polymerization appeared to increase the bond strength between the materials.

In vitro Evaluation of Dental Enamel Microhardness after Exposure to Isotonic Beverages

1Academica do Curso de Odontologia da Universidade Estadual da Paraiba (UEPB), Campina Grande/PB, Brasil. 2Professor Doutor do Programa de Pos-Graduacao em Odontologia da Universidade Estadual da Paraiba (UEPB), Campina Grande/PB, Brasil. 3Professor Doutor do Departamento de Odontologia Restauradora do Curso de Odontologia da Universidade Federal da Paraiba (UFPB), Joao Pessoa/PB, Brasil. 4Professor Assistente do Departamento de Engenharia Mecânica da Universidade Federal de Campina Grande (UFCG), Campina Grande/PB, Brasil.