RESUMO
PURPOSE: To evaluate the surface roughness and staining of a glass ionomer cement when subjected to different finishing procedures. MATERIALS AND METHODS: Sixty-four discs of Chem-Fil II glass ionomer cement were submitted to staining test with methylene blue by spectrophotometry and roughness test by profilometry. Four groups were evaluated: Mylar matrix (control). Sof-Lex discs, Enhance points, and diamond bur. RESULTS: Staining and roughness test, analyzed by ANOVA and Tukey's test, showed that the best surface was obtained when the material cured in contact with the Mylar matrix strip or when treated with Sof-Lex discs. The poorest results were obtained after using the diamond bur.
Assuntos
Polimento Dentário/instrumentação , Cimentos de Ionômeros de Vidro , Óxido de Alumínio , Análise de Variância , Diamante , Desenho de Equipamento , Estudos de Avaliação como Assunto , Cimentos de Ionômeros de Vidro/química , Propriedades de SuperfícieRESUMO
This paper reports the tensile bond strength of two composite resins used for cast bonded restorations (Comspan and Panavia Ex) on metallic surface with or without electrolytic etch. The best results were obtained by the union of Comspan to the alloy electrolytic etched.
Assuntos
Resinas Compostas , Colagem Dentária , Cimentos Dentários , Prótese Adesiva , Fosfatos , Cimentos de Resina , Ligas Dentárias , Eletrólise , Estudos de Avaliação como Assunto , Teste de Materiais , Resistência à TraçãoRESUMO
The authors describe a clinical case of closing upper central incisives diastema, reconstructiva of a conoid upper lateral and the rechaping of an upper canine to a lateral incisive. The material used was composite resin.
Assuntos
Resinas Compostas , Diastema/terapia , Cimentos de Resina , Adulto , Colagem Dentária , Feminino , Humanos , IncisivoRESUMO
This study is about the cast contraction of 10 alternative alloys developed in the Dentistics Department of the Faculdade de Odontologia de Bauru that were compared with type III and type IV gold alloys and alternative commercial alloys.