Improving the durability of resin-dentin bonds with an antibacterial monomer MDPB

Autor: Satoshi Imazato, Masanori Hashimoto, Haruaki Kitagawa, Satoshi Yamaguchi, Nanako Hirose
Rok vydání: 2018
Předmět:
Zdroj: Dental Materials Journal. 37:620-627
ISSN: 1881-1361
0287-4547
DOI: 10.4012/dmj.2017-209
Popis: 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.
Databáze: OpenAIRE