Journal article
Effect of a New Method to Simulate Pulpal Pressure on Bond Strength and Nano leakage of Dental Adhesives to Dentin
The journal of adhesive dentistry, Vol.14(6), pp.517-524
12/01/2012
DOI: 10.3290/j.jad.a25691
PMID: 22724111
Abstract
Purpose: To evaluate a new method of simulated pulpal pressure in vitro in comparison with the conventional one.
Materials and Methods: Four adhesives were analyzed: a three-step etch-and-rinse (Scotchbond Multi-Purpose [SBMP]), a two-step etch-and-rinse (Single Bond 2 [SB]), a two-step self-etching (Clearfil SE Bond [SE]) and a one-step self-etching (Clearfil S3 [S3]) system. Restorations were built up in flat, deep dentin from extracted molars. After two methods of simulated pulpal pressure or no pulpal pressure (control groups), the samples were cut into sticks and submitted to microtensile bond strength (mu TBS) testing and nanoleakage evaluation. Results were analyzed with two-way ANOVA and Tukey's test (p<0.05).
Results: In general, statistical analysis of mu TBS showed SBMP>SB=SE>S3. For both methods of simulated pulpal pressure, the mu TBS of SB and S3 was lower than in control groups. For SBMP and SE, the mu TBS remained stable with simulated pulpal pressure. Conventional and experimental methods of simulating pulpal pressure resulted in similar mu TBS (p = 1.00) and nanoleakage patterns. Silver impregnation was higher with SB and S3, especially after simulated pulpal pressure with both methods.
Conclusion: The experimental simulated pulpal-pressure method tested here was similar to the conventional method and can be an alternative to it. The simplified adhesives show reduction in bond strength after simulated pulpal pressure. The multistep adhesives have stable bond strengths under simulated pulpal pressure. Therefore, the separate application of hydrophobic resin can achieve resistance to bonding deterioration after hydrostatic pressure.
Details
- Title: Subtitle
- Effect of a New Method to Simulate Pulpal Pressure on Bond Strength and Nano leakage of Dental Adhesives to Dentin
- Creators
- Victor Pinheiro Feitosa - Universidade Estadual de Campinas (UNICAMP)Americo Bortolazzo Correr - Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Div Dent Mat, BR-13414903 Piracicaba, SP, BrazilLourenco Correr-Sobrinho - Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Div Dent Mat, BR-13414903 Piracicaba, SP, BrazilMario Alexandre Coelho Sinhoreti - Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Div Dent Mat, BR-13414903 Piracicaba, SP, Brazil
- Resource Type
- Journal article
- Publication Details
- The journal of adhesive dentistry, Vol.14(6), pp.517-524
- Publisher
- Quintessence Publishing Co Inc
- DOI
- 10.3290/j.jad.a25691
- PMID
- 22724111
- ISSN
- 1461-5185
- eISSN
- 1757-9988
- Number of pages
- 8
- Grant note
- Capes; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Language
- English
- Date published
- 12/01/2012
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984655345102771
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