Department of Periodontology and Endodontology, Division of Oral Health Science, Hokkaido University Graduate School of Dental Medicine, N13W7 Kita-ku, Sapporo, Hokkaido 060-8586, Japan.
Dent Mater J. 2012 Feb 3;31(1):131-8. doi: 10.4012/dmj.2011-142. Epub 2012 Jan 21.
The purpose of this study was to evaluate the influence of blood contamination before or after surface treatment on adhesion of 4-META/MMA-TBB resin. After bovine root dentin surfaces were contaminated with blood before or after dentin surface treatment with 10-3 solution, the contaminated surface was rinsed with water, air-dried, or re-treated with 10-3 solution. Dye leakage and microtensile bond strength (MTBS) of 4-META/MMA-TBB resin to dentin were measured after storage in water for 24 h. When blood contamination occurred before surface treatment, there was no significant difference in the leakage value and MTBS as compared with that of the uncontaminated group. When blood contamination occurred after surface treatment, the leakage value increased and MTBS significantly decreased (p<0.05) even if the blood was washed away. However, when the surface was re-treated with 10-3 solution after rinsing with water, the leakage value and MTBS were restored to those of the uncontaminated group.
本研究旨在评估表面处理前后血液污染对 4-META/MMA-TBB 树脂黏附性的影响。在牛牙本质表面经 10-3 溶液处理前后被血液污染后，用流水冲洗污染表面，风干或再次用 10-3 溶液处理。将污染的牙本质在水中储存 24 小时后，测量 4-META/MMA-TBB 树脂对牙本质的染料渗漏和微拉伸黏结强度（MTBS）。当表面处理前发生血液污染时，与未污染组相比，渗漏值和 MTBS 没有显著差异。当表面处理后发生血液污染时，即使血液被冲洗掉，渗漏值也会增加，MTBS 显著降低（p<0.05）。然而，当用流水冲洗后用 10-3 溶液再次处理表面时，渗漏值和 MTBS 恢复到未污染组的水平。
