Hybrid layer seals the cementum/4-META/MMA-TBB resin interface
Hybrid layer seals the cementum/4-META/MMA-TBB resin interface
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DOI：
10.1002/jbm.b.30578
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发表时间：
2007-01-01
影响因子：
3.4
通讯作者：
Sidhu, Sharanbir K.
中科院分区：
文献类型：
--
作者：
Tanaka, Saori;Sugaya, Tsutomu;Sidhu, Sharanbir K.
虽然4-Meta/MMA-TBB树脂对牙本质具有粘接性能，并已在临床上用于纵折根管的粘接治疗和根尖切除术，但对4-Meta/MMA-TBB树脂与牙骨质的粘接性能尚未见报道。本研究旨在评价4-Meta/MMA-TBB树脂对牙骨质的粘接和封闭能力。用柠檬酸和氯化铁溶液处理牛牙根牙骨质和牙本质表面，并在测试前将4-Meta/MMA-TBB树脂施加在处理过的表面上。牙骨质的微拉伸粘结强度和渗漏水平几乎等于牙本质。在SEM和TEM观察中，在树脂和牙骨质之间的界面处观察到约2-3 μ m厚的混合层。得出结论，4-Meta/MMA-TBB树脂通过牙骨质上的混合层粘附到牙骨质上，如先前报道的牙本质。(c)2006 Wiley Periodicals，Inc.
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 mu m 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. (c) 2006 Wiley Periodicals, Inc.