Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/68344
- Title:
- Effect of cyclic compressive loading on the bond strength of an adhesive system to dentin after collagen removal
- Universidade Estadual Paulista (UNESP)
- Universidade Estadual de Campinas (UNICAMP)
- 1461-5185
- 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.
- 25-Jul-2005
- Journal of Adhesive Dentistry, v. 7, n. 2, p. 127-131, 2005.
- 127-131
- Adhesive system
- Bond strength
- Collagen removal
- Sodium hypochlorite
- bisphenol A bis(2 hydroxypropyl) ether dimethacrylate
- collagen
- dentin bonding agent
- hypochlorite sodium
- oxidizing agent
- phosphoric acid
- resin
- silicon dioxide
- single bond
- Z100 composite resin
- zirconium
- animal
- cattle
- chemistry
- dental acid etching
- dental bonding
- dentin
- mechanical stress
- shear strength
- ultrastructure
- Acid Etching, Dental
- Bisphenol A-Glycidyl Methacrylate
- Phosphoric Acids
- Shear Strength
- Silicon Dioxide
- Sodium Hypochlorite
- Stress, Mechanical
- Zirconium
- http://dx.doi.org/10.3290/j.jad.a10284
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/68344
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