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Type: Artigo de periódico
Title: Effect Of Surface Penetrating Sealant On Roughness Of Posterior Composite Resins.
Author: dos Santos, Paulo Henrique
Consani, Simonides
Correr Sobrinho, Lourenço
Coelho Sinhoreti, Mário Alexandre
Abstract: To verify the effect of surface penetrating sealant on the roughness of posterior resin-based composites before and after mechanical toothbrushing. 10 specimens of four different composites (Alert, Definite, Z100 and Prodigy Condensable) were made using a metal matrix (height 2 mm and diameter 4 mm). After 24 hours, the specimens were polished using Sof-Lex discs in sequence: coarse, medium, fine and superfine, each for 40 seconds and, immediately, one of the surfaces was covered with Protect-It surface sealant. All the specimens were examined with a profilometer to measure the initial surface roughness before mechanical toothbrushing at a constant speed of 250 strokes/minute with a total of 30,000 cycles, using a toothbrush and dentifrice containing calcium carbonate as abrasive, under a load of 200 g. After toothbrushing the surface roughness was measured once again. The data were analyzed with ANOVA and the Tukey test at a 95% confidence level. Mechanical toothbrushing increased the surface roughness of all the composites studied (Alert: 0.7303 +/- 0.0942 microm; Definite: 0.4961 +/- 0.1255 microm; Z100: 0.3428 +/- 0.0841 microm), with the exception of Prodigy Condensable (0.2782 +/- 0.0678 microm) (P > 0.05). The surface penetrating sealant effectively decreased the surface roughness for Alert (0.5435 +/- 0.2182 microm) and Definite (0.2956 +/- 0.0368 microm) (P < 0.05), but had no effect upon Z100 (0.3331 +/- 0.0565 microm) and Prodigy Condensable (0.2760 +/- 0.0920 microm) as these have smaller filler sizes than the other composites tested (P > 0.05).
Subject: Analysis Of Variance
Calcium Carbonate
Composite Resins
Confidence Intervals
Dental Polishing
Materials Testing
Microscopy, Electron, Scanning
Silicon Dioxide
Surface Properties
Time Factors
Citation: American Journal Of Dentistry. v. 16, n. 3, p. 197-201, 2003-Jun.
Rights: fechado
Identifier DOI: 
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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