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- Title
Microtensile Bond Strength of Three Simplified Adhesive Systems to Caries-affected Dentin.
- Authors
Scholtanus, J. D.; Purwanta, Kenny; Dogan, Nilgun; Kleverlaan, Cees J.; Felizer, Albert J.
- Abstract
Purpose: The purpose of the study was to determine the microtensile bond strength of three different simplified adhesive systems to caries-affected dentin. Materials and Methods: Fifteen extracted human molars with primary carious lesions were ground flat until dentin was exposed. Soft caries-infected dentin was excavated with the help of caries detector dye. On the remaining hard dentin, a standardized smear layer was created by polishing with 600-grit SIC paper. Teeth were divided into three groups and treated with one of the three tested adhesives: Adper Scotchbond 1 XT (3M ESPE), a 2-step etch-and-rinse adhesive, Clearfil 5? Bond (Kuraray), a 1-step self-etching or all-in-one adhesive, and Clearfil SE Bond (Kuraray), a 2-step self-etching adhesive. Five-mm-thick composite buildups (Z-250, 3M ESPE) were built and light cured. After water storage for 24 h at 37°C, the bonded specimens were sectioned into bars (1.0 × 1.0 mm; n = 20 to 30). Microtensile bond strength of normal dentin specimens and caries-affected dentin specimens was measured in a uni- versal testing machine (crosshead speed = 1 mm/min). Data were analyzed using two-way ANOVA and Tukey's post-hoc test (p < 0.05). Results: No significant differences in bond strength values to normal dentin between the three adhesives were found. Adper Scotchbond 1 XT and Clearfil S? Bond showed significantly lower bond strength values to caries-affected dentin. For Clearfil SE Bond, bond strength values to normal and caries-affected dentin were not significantly different. ConclusIon: All the tested simplified adhesives showed similar bond strength values to normal dentin. For the tested 2-step etch-and-rinse adhesive and the all-in-one adhesive, the bond strength values to caries-affected dentin were lower than to normal dentin.
- Subjects
DENTAL bonding; DENTAL adhesives; DENTIN; DENTAL caries; DYES in medical diagnosis; DENTAL acid etching; ANALYSIS of variance
- Publication
Journal of Adhesive Dentistry, 2010, Vol 12, Issue 4, p273
- ISSN
1461-5185
- Publication type
Article
- DOI
10.3290/j.jad.a17545