Dentin bonding performance and interface observation of an MMA-based restorative material

作者：Shinagawa Junichi; Inoue Go^*; Nikaido Toru; Ikeda Masaomi; Sadr Alireza; Tagami Junji

来源：Dental Materials Journal, 2016, 35(4): 578-584.

DOI：10.4012/dmj.2015-363

• 4-META/MMA-TBB
• Fluoride release
• Bond strength

The purpose of this study was to evaluate bonding performance and dentin interface acid resistance using a 4-META/MMA-TBB based restorative material (BF) compared to a conventional 4-META/MMA-TBB resin cement (SB), and the effect of sodium fluoride (NaF) addition to the materials. Dentin surfaces were treated with 10% citric acid-3% ferric chloride (10-3) or 4-META containing self-etching primer (TP), followed by application of BF or SB polymer powders with or without NaF, to evaluate microtensile bond strength (mu TBS) in six experimental groups; 10-3/SB, 10-3/BF, TP/SB, TP/BF, TP/SB/NaF and TP/BF/NaF. SEM observation of the resin-dentin interface was performed after acid-base challenge to evaluate interfacial dentin resistance to acid attack. TP/BF showed highest TBS, while NaF polymers decreased TBS. TP/BF showed funnel-shaped erosion at the interface, however, NaF polymers improved acid resistance of interface. In conclusion, BF demonstrated high mu TBSs and low acid-resistance at the interface. NaF addition enhanced acid resistance but decreased TBS.

• 出版日期2016-8