Improving the durability of resin-dentin bonds with an antibacterial monomer MDPB
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- HASHIMOTO Masanori
- Institute of Dental Research, Osaka Dental University
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- HIROSE Nanako
- Department of Restorative Dentistry and Endodontology, Graduate School of Dentistry, Osaka University
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- KITAGAWA Haruaki
- Department of Biomaterials Science, Graduate School of Dentistry, Osaka University
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- YAMAGUCHI Satoshi
- Department of Biomaterials Science, Graduate School of Dentistry, Osaka University
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- IMAZATO Satoshi
- Department of Biomaterials Science, Graduate School of Dentistry, Osaka University
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Abstract
<p>The 12-methacryloxydodecylpyridium bromide (MDPB) has been reported to act as a matrix metalloprotease (MMP) inhibitor. In this study, the effects of application of MDPB on resin-dentin bonds were evaluated. The resin-dentin bonded specimens were prepared with a commercial MDPB-containing self-etching primer or a self-etching primer without MDPB, and stored 24 h or 1 year. Surfaces were pretreated with chlorhexidine or MDPB-containing cavity disinfectant. Additionally, we compared the degradation patterns between the two self-etching adhesives and etch and rinse system. Water tree formations were observed as the typical morphological phase of the two tested self-etching adhesives for both 24 h and 1 year groups. The degradation phase of collagen network depletion was observed in the adhesive interface of the etch-and-rinse system in the 1 year group. Pretreatment with chlorhexidine did not prevent bond strength reduction after 1 year. The cavity disinfectant improved the bond durability for the self-etching adhesive.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 37 (4), 620-627, 2018-07-26
The Japanese Society for Dental Materials and Devices