Manabe A, Itoh K, Tani C, Hisamitsu H, Wakumoto S
Department of Operative Dentistry, Showa University, School of Dentistry, Tokyo, Japan.
Dent Mater J. 1999 Mar;18(1):116-23. doi: 10.4012/dmj.18.116.
The objective of the present study was to understand the role of the functional monomers in dentin bonding agents of an experimental dentin bonding system by measuring the wall-to-wall contraction gap and tensile bond strength measurement. The efficacy of three commercial dentin bonding agents after using EDTA for conditioning and GM for priming was evaluated by measuring the contraction gap of the resin composite in a cylindrical dentin cavity, and by measuring the tensile bond strength of the composite to a flat dentin surface. The effect of the functional monomers was demonstrated by the contraction gap measurement alone. The value of the contraction gap was significantly different between the commercial dentin bonding agents and these agents without functional monomers (p < 0.05). It was concluded that the functional monomers were essential to obtaining the marginal integrity of the resin composite in the dentin cavities.
本研究的目的是通过测量壁间收缩间隙和拉伸粘结强度，了解功能性单体在一种实验性牙本质粘结系统的牙本质粘结剂中的作用。通过测量圆柱形牙本质窝洞中树脂复合材料的收缩间隙，以及测量复合材料与平坦牙本质表面的拉伸粘结强度，评估了三种市售牙本质粘结剂在使用乙二胺四乙酸（EDTA）进行预处理和使用GM进行底漆处理后的效果。仅通过收缩间隙测量就证明了功能性单体的作用。市售牙本质粘结剂与不含功能性单体的粘结剂之间的收缩间隙值存在显著差异（p < 0.05）。得出的结论是，功能性单体对于在牙本质窝洞中获得树脂复合材料的边缘完整性至关重要。
