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Effectiveness of Sodium Hypochlorite and Sulfinic Acid Sodium Salt Treatment on Dentin-Resin Bonding: Long-term Durability of One-Step Self-Etching Adhesive

Hayaki Nakatani, Atsushi Mine, Mariko Matsumoto, Tomoshige Kabetani, Asuka Kawaguchi-Uemura, Mami Higashi, Yuko Tajiri, Dai Imai, Ryosuke Hagino, Takuya Minamino, Jiro Miura, Hirofumi Yatani

Dent Mater J. 2017 Nov 29;36(6):842-850.

PMID: 29081450

Abstract:

This study aimed to evaluate the effect of sulfinic acid sodium salt interposition after acid and sodium hypochlorite treatment (NC treatment) on dentin bonding durability using a mild type one-step self-etching adhesive. Fifteen human third molars were randomly assigned into three experimental groups according to dentin pretreatment before applying the one-step self-etching adhesive: Cont group, without pretreatment; NC group, pretreatment with phosphoric acid and sodium hypochlorite gel; and NC+AC group, additional treatment with sulfinic acid sodium salt followed by the same pretreatment of the NC group. Microtensile bond strength was measured and the pre-treated dentin surface, fracture modes, and bonding interface were observed. The bond strength of the NC+AC group was significantly higher than that of the other groups (p<0.001). The dentin-adhesive interface was degraded after 1 year only in the Cont group. Our results demonstrated NC treatment improves bonding durability and application of sodium sulfinic acid salt after NC treatment improves bonding effectiveness.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
IAR42411253 2-Keto-4-methyl-d3-pentanoic acid sodium salt 2-Keto-4-methyl-d3-pentanoic acid sodium salt Price
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