Tanaka Saori, Sugaya Tsutomu, Kawanami Masamitsu, Nodasaka Yoshinobu, Yamamoto Toshiki, Noguchi Hiroshi, Tanaka Yuko, Ikeda Takatsumi, Sano Hidehiko, Sidhu Sharanbir K
Department of Periodontology and Endodontology, Graduate School of Dental Medicine, Hokkaido University, Kita 13 Nishi 7, Kita-ku, Sapporo, Hokkaido 060-8586, Japan.
J Biomed Mater Res B Appl Biomater. 2007 Jan;80(1):140-5. doi: 10.1002/jbm.b.30578.
Although 4-META/MMA-TBB resin has adhesive properties to dentin, and has been clinically used for the bonding treatment of vertically fractured roots and apicoectomy, there has not been any investigation on the adhesion of 4-META/MMA-TBB resin to cementum. The purpose of this in vitro study was to evaluate the bonding and the sealing ability of 4-META/MMA-TBB resin to cementum. Bovine root cementum and dentin surfaces were treated with a citric acid and ferric chloride solution, and the 4-META/MMA-TBB resin was applied on the treated surfaces before testing. The microtensile bond strength and the leakage levels obtained for the cementum were almost equal to those for the dentin. In SEM and TEM observations, a hybrid layer approximately 2-3 microm in thickness was observed at the interface between the resin and the cementum. It is concluded that 4-META/MMA-TBB resin adhered to cementum via a hybrid layer on cementum, as previously reported for dentin.
虽然4-甲基丙烯酰氧基乙基偏苯三酸酐/甲基丙烯酸甲酯-三丁基硼树脂（4-META/MMA-TBB树脂）对牙本质具有黏附性能，并且已在临床上用于垂直根折和根尖切除术的粘结治疗，但尚未有关于4-META/MMA-TBB树脂与牙骨质黏附性的研究。本体外研究的目的是评估4-META/MMA-TBB树脂与牙骨质的粘结和封闭能力。牛牙根牙骨质和牙本质表面用柠檬酸和氯化铁溶液处理，在测试前将4-META/MMA-TBB树脂应用于处理过的表面。牙骨质获得的微拉伸粘结强度和渗漏水平几乎与牙本质的相等。在扫描电子显微镜（SEM）和透射电子显微镜（TEM）观察中，在树脂与牙骨质的界面处观察到一个厚度约为2-3微米的混合层。结论是，4-META/MMA-TBB树脂通过牙骨质上的混合层与牙骨质黏附，正如先前关于牙本质的报道。
