Tanaka Yuko, Sugaya Tsutomu, Kawanami Masamitsu
Department of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan.
Dent Mater J. 2004 Sep;23(3):265-70. doi: 10.4012/dmj.23.265.
4-META/MMA-TBB resin has shown good biocompatibility and remarkable adhesion to dentin. It seems to be suitable for use in periodontal tissues for retrograde root sealing and treatment of vertically fractured roots. For an adhesive resin to be useful clinically, it must bond not only to the dentin but also to the cementum. The purpose of this study was to evaluate the long-term adhesion durability of 4-META/MMA-TBB resin to cementum kept in water at 37 degrees C. Bovine root cementum and dentin surfaces were treated with 10-3 solution before 4-META/MMA-TBB resin was applied on treated surfaces. The micro-tensile bond strength (microTBS) decreased during the first two months; dye leakage value increased during the first four months and stabilized thereafter. No significant differences in adhesion durability were recognized between the dentin and cementum.
4-META/MMA-TBB树脂已显示出良好的生物相容性和对牙本质的显著附着力。它似乎适用于牙周组织，用于逆行性牙根封闭和垂直根折的治疗。一种粘结性树脂要在临床上有用，它不仅必须粘结到牙本质上，还必须粘结到牙骨质上。本研究的目的是评估4-META/MMA-TBB树脂在37℃水中保存时对牙骨质的长期粘结耐久性。在将4-META/MMA-TBB树脂应用于处理过的表面之前，先用10-3溶液处理牛牙根牙骨质和牙本质表面。微拉伸粘结强度（microTBS）在前两个月下降；染料渗漏值在前四个月增加，此后稳定。在牙本质和牙骨质之间未发现粘结耐久性的显著差异。
