Effects of Different Demineralization-Inhibiting Methods on the Shear Bond Strength of Glass-Ceramics

Purpose This in vitro study was undertaken to evaluate the effects of different demineralization‐inhibiting methods on the shear bond strength (SBS) of glass‐ceramics. Materials and Methods Ninety extracted intact human mandibular lateral insicors were randomly divided into six equal groups. Group C...

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Bibliographic Details
Published in:Journal of prosthodontics 2015-07, Vol.24 (5), p.407-413
Main Authors: Dilber, Erhan, Akın, Mehmet, Yavuz, Tevfik, Erdem, Ali
Format: Article
Language:English
Subjects:
Casein phosphopeptide-amorphous calcium phosphate
Ceramics
demineralization
Dental Bonding
Dental Porcelain
Dental Stress Analysis
Dentistry
glass-ceramic
Humans
infiltrant
Materials Testing
microabrasion
Resin Cements
shear bond strength
Shear Strength
Surface Properties
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Summary:Purpose This in vitro study was undertaken to evaluate the effects of different demineralization‐inhibiting methods on the shear bond strength (SBS) of glass‐ceramics. Materials and Methods Ninety extracted intact human mandibular lateral insicors were randomly divided into six equal groups. Group C was left untreated, while enamel subsurface demineralization was induced in the other groups. In group D, porcelain discs (3 mm in diameter) were cemented to demineralized enamel by using total‐etch photopolymerizing luting composite resin without pretreatment. Demineralized specimens in groups F, CA, M, and I were pretreated with fluoride gel, CPP‐ACP paste, microabrasion, and resin infiltration, respectively, and then porcelain discs were cemented. SBS (MPa) was calculated from the failure load (N) per bonded area (mm2). Fracture types were examined by optical microscopy (40× magnification). Data were analyzed with ANOVA, Tukey's test, and G‐test. Results ANOVA revealed significant intergroup differences (p < 0.01). No significant differences in SBS (MPa) were found between groups C (19.48 ± 2.0) and I (20.02 ± 1.6). Lower SBS values were recorded in groups D (7.93 ± 0.8), F (12.51 ± 1.5), CA (17.08 ± 1.3), and M (14.84 ± 1.4). Mixed and cohesive failures were the most prevalent in groups M and I, respectively. Conclusion Resin infiltration enhanced the SBS of porcelain discs bonded to demineralized enamel when compared with the other demineralization‐inhibiting methods. Clinical Relevance: Resin infiltration could be useful to enhance adhesion of glass‐ceramics to teeth with white spot lesions.
ISSN:1059-941X
1532-849X
DOI:10.1111/jopr.12230