The role of MDP in a bonding resin of a two-step self-etching adhesive system
-
- MATSUI Naoko
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
-
- TAKAGAKI Tomohiro
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
-
- SADR Alireza
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
-
- IKEDA Masaomi
- Clinical Oral Science, Department of Oral Health Care Sciences, Tokyo Medical and Dental University
-
- ICHINOSE Shizuko
- Instrumental Analysis Research Center, Tokyo Medical and Dental University
-
- NIKAIDO Toru
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
-
- TAGAMI Junji
- Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
Search this article
Abstract
The purpose of this study was to evaluate the role of 10-methacryloyloxydecyl dihydrogen phosphate (MDP) contained in the bonding resin of a two-step self-etch adhesive system. An experimental adhesive (M0) containing MDP only in the primer, but not in the bonding resin was prepared. Clearfil SE Bond (MM) and M0 were compared in terms of microtensile bond strength to dentin, ultimate tensile strength of the bonding resin, and dentin-resin bonding interface morphology under SEM and TEM. The immediate µTBS values of MM significantly decreased after thermal cycles while M0 were stable even after 10,000 cycles. In the SEM observations, formation of erosion was observed beneath the acid-base resistant zone only in M0. The results suggested that MDP in the bonding resin of the two-step self-etching system; 1) improved the immediate bond strength, but caused reduction in long-term bond durability; 2) offered the advantages of acid-base resistance at the ABRZ forefront area.
Journal
-
- Dental Materials Journal
-
Dental Materials Journal 34 (2), 227-233, 2015
The Japanese Society for Dental Materials and Devices
