The role of MDP in a bonding resin of a two-step self-etching adhesive system

Dental Materials Journal
Naoko MatsuiJ Tagami

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.

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Citations

Dec 2, 2015·European Journal of Oral Sciences·Kenji TsuchiyaMasashi Miyazaki
Jul 13, 2018·Dental Materials Journal·Ayako NakamotoJunji Tagami
Jan 15, 2020·Dental Materials Journal·Aye Ko KoJunji Tagami
Jan 28, 2017·Journal of Prosthodontic Research·Atsuko TagamiJunji Tagami
Feb 7, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Haihuan GongZhanchen Cui
Sep 3, 2020·Brazilian Oral Research·Cibele Cândida de Almeida KintoppCarla Castiglia Gonzaga
Nov 11, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Marina Ciccone GiacominiLinda Wang
Aug 10, 2021·BioMed Research International·Toru NikaidoJunji Tagami

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