Bonding characteristics to dentin walls of class II cavities, in vitro.
Bonding characteristics to dentin walls of class II cavities, in vitro.
复制标题
体外与 II 类蛀牙牙本质壁的粘合特性。
DOI：
10.1016/s0109-5641(00)00089-0
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Pashley,D
中科院分区：
文献类型：
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作者：
Bouillaguet,S;Ciucchi,B;Jacoby,T;Wataha,JC;Pashley,D
ObjectivesThe的目的是测试的假设，即粘结强度完整的II类腔壁表面低于相应的平面上测量的切割隔离的其余的cavity walls.MethodsClass II（MOD）腔准备在提取的人类第三磨牙，然后分为两组：完整的腔粘结组或平面组。所有制备的表面均进行酸蚀，并使用Scotchbond Multi-Purpose Plus粘合剂系统粘合，然后使用Z100树脂复合材料进行修复。在水中储存2天后，将牙齿近远中分为相等的两半。将一半垂直连续切片，而另一半水平连续切片以产生一系列0.5mm厚的板。将每个板修整成沙漏形轮廓，在感兴趣的区域具有最小的横截面积（即，结果窝洞粘接组的平均粘接强度显著低于平面粘接组（p<0.05）。然而，在任何一组，有没有显着一致的差异之间的各个regions.SignificanceThe大平面在大多数实验室粘接研究可能高估的粘结强度，可以实现在复杂的腔准备和恢复临床相关条件下。
ObjectivesThe objective of this study was to test the hypothesis that bond strengths to intact class II cavity wall surfaces are lower than those measured on corresponding flat surfaces isolated by cutting away the rest of the cavity walls.MethodsClass II (MOD) cavities were prepared in extracted human third molars and then divided into two groups: Intact cavity bonding group or flat surface group. All prepared surfaces were acid-etched and bonded with Scotchbond Multi-Purpose Plus adhesive system and restored with Z100 resin composite. After storage in water for 2 days, the teeth were divided mesio-distally into two equal halves. One half was vertically serially sectioned, while the other half was horizontally serially sectioned to yield a series of 0.5mm thick slabs. Each slab was trimmed into an hour-glass outline with the narrowest cross-sectional area at the region of interest (i.e., axial resin-dentin interface).ResultsThe mean bond strengths obtained in the cavity bonding group were significantly lower (p<0.05) than those of the flat bonding group. However, within either group, there were no significant consistent differences among the various regions.SignificanceThe large flat surfaces used in most laboratory bonding studies may overestimate the bond strengths that can be achieved in complex cavities prepared and restored under clinically relevant conditions.