Chiba Yasushi, Rikuta Akitomo, Yasuda Genta, Yamamoto Akira, Takamizawa Toshiki, Kurokawa Hiroyasu, Ando Susumu, Miyazaki Masashi
Nihon University Graduate School of Dentistry, Tokyo, Japan.
J Oral Sci. 2006 Sep;48(3):131-7. doi: 10.2334/josnusd.48.131.
This study was conducted to clarify the influence of dentin surface moisture on bond strength of single-step self-etch adhesive systems. The adhesive systems used were Adper Prompt L-Pop (AP), Clearfil tri-S Bond (CT), Fluoro Bond Shake One (FB), G-Bond (GB), and One-Up Bond F Plus (OF). Bovine mandibular incisors were wet-ground with #600 SiC to expose the labial dentin. After rinsing with tap water, the dentin surface was dried with air for 10 sec (Dry condition) or blotted (Wet condition). Adhesives were applied according to each manufacturer's instructions, followed by resin composite polymerization. Ten samples per test group were stored in distilled water at 37 degrees C for 24 h, then shear tested at a crosshead speed of 1.0 mm/min. The data were analyzed by Student's t test and Tukey HSD test at a probability level of 0.05. The mean bond strengths for Dry condition ranged from 13.9 MPa to 18.2 MPa, and those for Wet condition ranged from 7.1 MPa to 18.4 MPa. Significantly lower bond strengths were obtained for the Wet condition for GB, FB, and OF. Failure after the test was commonly due to adhesive breakdown associated with partial cohesive failure in the dentin. These data suggest that air-drying of the dentin surface is appropriate for the adhesive systems tested.
本研究旨在阐明牙本质表面湿度对单步自酸蚀粘结系统粘结强度的影响。所使用的粘结系统为Adper Prompt L-Pop（AP）、Clearfil tri-S Bond（CT）、Fluoro Bond Shake One（FB）、G-Bond（GB）和One-Up Bond F Plus（OF）。牛下颌切牙用#600碳化硅砂纸湿磨以暴露唇面牙本质。用自来水冲洗后，牙本质表面用空气吹干10秒（干燥条件）或吸干（湿润条件）。按照各制造商的说明应用粘结剂，随后进行树脂复合材料聚合。每个测试组的10个样本在37℃的蒸馏水中储存24小时，然后以1.0毫米/分钟的十字头速度进行剪切测试。数据采用学生t检验和Tukey HSD检验进行分析，概率水平为0.05。干燥条件下的平均粘结强度范围为13.9兆帕至18.2兆帕，湿润条件下的平均粘结强度范围为7.1兆帕至18.4兆帕。对于GB、FB和OF，湿润条件下获得的粘结强度显著较低。测试后的失败通常是由于与牙本质中部分内聚破坏相关的粘结剂破坏。这些数据表明，牙本质表面的空气干燥适用于所测试的粘结系统。
