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Type: Artigo de periódico
Title: Effect of cyclic compressive loading on the bond strength of an adhesive system to dentin after collagen removal
Author: dos Santos, PH
Sinhoreti, MAC
Consani, S
Sobrinho, LC
Adabo, GL
Vaz, LG
Abstract: Purpose: The objective of this study was to verify the effect of cyclic compressive loading on the shear bond strength of an adhesive system following Collagen removal. Materials and Methods: Sixty bovine teeth were divided into 4 groups based on the adhesive procedure used: groups 1 and 2 - etching with 35% phosphoric acid and application of the Single Bond adhesive system; groups 3 and 4 - after etching, a 10% sodium hypochlorite solution was applied for 1 min before the application of the adhesive. in all the specimens, a Z100 resin cylinder was built up over the bond area. Groups 2 and 4 were submitted to 500,000 cycles with a load of 100 N. Results: The mean values for the shear bond test (MPa) were: group 1: 7.37 +/- 1.15; group 2: 5.72 +/- 1.66; group 3: 5.95 +/- 1.21; group 4: 3.66 +/- 1.12. There was no difference between groups 1 and 2 (p > 0.01). Between groups 1 and 3, 2 and 4, and 3 and 4 there was a significant difference (p < 0.01). The majority of the specimens demonstrated an adhesive failure. Conclusion: The application of sodium hypochlorite on dentin decreased the values of shear bond strength, as did the load cycling in the group treated with sodium hypochlorite.
Subject: adhesive system
collagen removal
sodium hypochlorite
bond strength
Country: EUA
Editor: Quintessence Publ Co Inc
Citation: Journal Of Adhesive Dentistry. Quintessence Publ Co Inc, v. 7, n. 2, n. 127, n. 131, 2005.
Rights: aberto
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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