We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence of pH Cycling on the Microtensile Bond Strength of Self-etching Adhesives Containing MDPB and Fluoride to Dentin and Microhardness of Enamel and Dentin Adjacent to Restorations.
- Authors
Pedrosa, Vivianne Oliveira; Flório, Flávia Martão; Turssi, Cecília Pedroso; Amaral, Flávia Lucisano Botelho; Basting, Roberta Tarkany; França, Fabiana Mantovani Gomes
- Abstract
Purpose: To evaluate the influence of pH cycling on microtensile bond strength (μTBS) and fracture pattern of MDPB- and fluoride-containing self-etching adhesive systems to dentin, and on the cross-sectional Knoop micro-hardness (CSMH) of enamel and dentin adjacent to restorations. Materials and Methods: The two-step self-etching adhesive Clearfil SE Bond (SE; Kuraray), the two-step MDPB-and fluoride-containing adhesive Clearfil Protect Bond (PB; Kuraray), and the one-step fluoride-containing adhesive One-Up Bond F Plus (OU; Tokuyama) were used to bond resin composite to midcoronal dentin surfaces (for µTBS testing) or to Class V cavities (for CSMH testing). μTBS and CSMH tests were performed after a 15-day period of pH cycling or storage in artificial saliva. Results: μTBS to dentin was not affected by pH cycling or storage in artificial saliva; however, μTBS values found for PB were higher than those observed for OU. No difference existed among the µTBS values shown by PB, OU, and SE. The fracture pattern was affected by both pH cycling and adhesive system. In enamel, there was no difference in CSMH values provided by the different adhesive systems and storage media, regardless of the distance and depth from restoration. In dentin, PB and SE showed the highest CSMH values, which differed from those obtained for OU. Significantly higher CSMH values were found 100 µm from the restoration margin for all adhesive systems tested. Conclusion: The bond strength and microhardness in the vicinity of restorations were adhesive dependent, with MDPB and fluoride exerting no effect on the performance of the adhesive systems.
- Subjects
HYDROGEN-ion concentration; DENTAL bonding; POLYMERS in dentistry; FLUORIDES; DENTIN; MICROHARDNESS; DENTAL enamel; DENTAL adhesives; DENTAL acid etching; ARTIFICIAL saliva; DENTAL fillings
- Publication
Journal of Adhesive Dentistry, 2012, Vol 14, Issue 6, p525
- ISSN
1461-5185
- Publication type
Article
- DOI
10.3290/j.jad.a25689