Journal article
Effect of resin coat technique on bond strength of indirect restorations after thermal and load cycling
Bulletin of Tokyo Dental College, Vol.51(3), pp.111-118
2010
DOI: 10.2209/tdcpublication.51.111
PMID: 20877157
Abstract
OBJECTIVETo evaluate the ability of the resin-coat technique used in cavity preparation to protect dentin before impression taking and final cementation and its effect on the tensile bond strength of indirect restorations after thermal and load cycling. METHODSOcclusal enamel was removed from 25 third molars to expose flat dentin. Teeth were divided into 5 groups (n=5): G1, receiving no dentin sealing (control group); G2, dentin was hybridized with all-in-one self-etch adhesive (Clearfil S3); G3, receiving combination of a one-step self-etch adhesive and low viscosity resin (Clearfil Protect Liner); G4, dentin was hybridized with "two-step" self-etch adhesive (Clearfil SE Bond); and G5, combination of a "two-step" adhesive system and low viscosity resin was applied. After dentin sealing, indirect restorations were performed with Sinfony system and cementation with dual-cure resin cement (Panavia F). Restored teeth were submitted to thermal (1,500 cycles) and mechanical cycling (200,000 cycles). After this they were sectioned into sticks (1×1 mm, approximately) and then subjected to microtensile bond strength testing. RESULTSall data were submitted to ANOVA and Tukey test (p<0.05). Mean values (MPa) obtained were G1, 9.5; G2, 9.2; G3, 14.8; G4, 12.2; and G5, 17.4. Statistical analysis showed differences between groups, with G5 performance being higher than that of the other groups. CONCLUSIONwhen no resin coating-technique was used to protect dentin, lower bond strength values were obtained than those in the other groups. The combination of a "two-step" self-etch adhesive system and low viscosity resin promoted the best bond strength values.
Details
- Title: Subtitle
- Effect of resin coat technique on bond strength of indirect restorations after thermal and load cycling
- Creators
- Victor Pinheiro Feitosa - Universidade Estadual de Campinas (UNICAMP)Alberth David Correa Medina - Universidade Estadual de Campinas (UNICAMP)Regina Maria Puppin-Rontani - Universidade Estadual de Campinas (UNICAMP)Lourenco Correr-SobrinhoMario Alexandre Coelho Sinhoreti - Universidade Estadual de Campinas (UNICAMP)
- Resource Type
- Journal article
- Publication Details
- Bulletin of Tokyo Dental College, Vol.51(3), pp.111-118
- DOI
- 10.2209/tdcpublication.51.111
- PMID
- 20877157
- ISSN
- 0040-8891
- Language
- English
- Date published
- 2010
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984654467102771
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