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Effect of 180‐Day Water Storage on Bonding Effectiveness of Self‐Adhesive Systems to Occlusal and Proximal Dentin
Author(s) -
Montagner Anelise Fernandes,
Skupien Jovito Adiel,
Borges Marciano Freitas,
Krejci Ivo,
Bortolotto Tissiana,
Susin Alexandre Henrique
Publication year - 2017
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/jopr.12365
Subject(s) - dentin , adhesive , molar , materials science , distilled water , bond strength , dentistry , composite material , composite number , dental bonding , chemistry , medicine , chromatography , layer (electronics)
Purpose This study aimed to evaluate the microshear bond strength (μSBS) values of adhesive systems to occlusal and proximal dentin submitted to water storage aging. Materials and Methods Occlusal and proximal dentin surfaces were obtained from 90 molars, polished with 600‐grit SiC and divided according to the type of adhesive system: one total‐etch and two self‐etch. Starch tubing was used to perform 1 mm 2 cylindrical composite resin restorations. The specimens were aged in distilled water during different storage times: 24 hours, 3 months, and 6 months (n = 10). The specimens were submitted to μSBS test. The μSBS values in MPa were subject to three‐way ANOVA and post hoc Tukey test ( p < 0.05). Results There was no statistical difference in the μSBS values among the storage times ( p = 0.72); however, the dentin region ( p < 0.01) and the adhesive system ( p < 0.01) significantly affected the μSBS. The proximal surface (14.7 ± 3.3 MPa) presented higher μSBS values than the occlusal dentin (10.9 ± 4.1 MPa). The all‐in‐one adhesive system (GB) achieved the highest μSBS mean (17.0 ± 1.7 MPa). Conclusion Both material and dentin surface factors affected the composite‐dentin bond strength; however, the water storage did not influence bonding effectiveness over time.