ABSTRACT
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.
Subject(s)
Dental Polishing/instrumentation , Glass Ionomer Cements , Aluminum Oxide , Analysis of Variance , Diamond , Equipment Design , Evaluation Studies as Topic , Glass Ionomer Cements/chemistry , Surface PropertiesABSTRACT
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.
Subject(s)
Composite Resins , Dental Bonding , Dental Cements , Denture, Partial, Fixed, Resin-Bonded , Phosphates , Resin Cements , Dental Alloys , Electrolysis , Evaluation Studies as Topic , Materials Testing , Tensile StrengthABSTRACT
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.
Subject(s)
Composite Resins , Diastema/therapy , Resin Cements , Adult , Dental Bonding , Female , Humans , IncisorABSTRACT
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.