Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/198898
Type: Artigo de periódico
Title: Effect Of Microwave Treatment On The Shear Bond Strength Of Different Types Of Commercial Teeth To Acrylic Resin.
Author: Consani, Rafael L X
Carmignani, Mariana R
Mesquita, Marcelo F
Correr-Sobrinho, Lourenço
Guiraldo, Ricardo D
Abstract: The purpose of this study was to verify the effect of microwave treatment on the shear bond strength of commercial types of teeth to acrylic resin, when the glossy ridge laps were unmodified (groups 1 and 5), bur abraded (groups 2 and 6), bur grooved (groups 3 and 7) or etched by monomer (groups 4 and 8). Controversial findings have shown that mechanical or chemical changes in ridge-lap surface of the tooth increase or decrease the bond strength between tooth and acrylic resin, and the microwave disinfection may cause different changes on this bond strength. Eighty specimens (n = 10) were made with the acrylic resin bonded to tooth glossy ridge lap, polymerised in water at 74 degrees C for 9 h, and deflasked after flask cooling. Specimens of the groups 5, 6, 7 and 8 were individually immersed in 150 ml of water and submitted to microwave treatment in an oven at 650 W for 3 min. Control specimens (groups 1, 2, 3 and 4) were not microwave treated. Shear bond strength test was performed in an Instron machine with a cross-speed of 1 mm/min. Collected data were submitted to anova and Tukey's test (alpha = 0.05). Microwave treatment decreased the shear bond strength values of the tooth/resin bond. In the microwaved and non-microwaved procedures, mechanical retention improved the shear bond strength when compared with the control and monomer treatments. Shear bond strength of the tooth/resin bond was influenced by the microwave treatment and different commercial teeth association, and was lower for the Biotone tooth.
Subject: Acrylic Resins
Dental Bonding
Dental Etching
Dental Materials
Dental Stress Analysis
Humans
Materials Testing
Microwaves
Polymerization
Shear Strength
Stress, Mechanical
Surface Properties
Temperature
Time Factors
Tooth, Artificial
Water
Rights: fechado
Identifier DOI: 10.1111/j.1741-2358.2009.00333.x
Address: http://www.ncbi.nlm.nih.gov/pubmed/20545779
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
pmed_20545779.pdf119.78 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.