CUSP REINFORCEMENT BY THE ACID-ETCH TECHNIQUE
CUSP REINFORCEMENT BY THE ACID-ETCH TECHNIQUE
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DOI：
10.1177/00220345840630081401
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发表时间：
1984-01-01
影响因子：
7.6
通讯作者：
DOUGLAS, WH
中科院分区：
文献类型：
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作者：
MORIN, D;DELONG, R;DOUGLAS, WH
将应变计安装在12颗上颌前磨牙上，进行了一系列的修复程序，以进行MOD准备。使用伺服液压施加咬合应力，并使用应变计评估牙尖弯曲。每颗牙分别测试两种粘结修复方法和三种非粘结修复方法。与MOD预备和非粘结修复相比，两种粘结条件下的牙尖强化明显增加。非粘结修复体在组内表现出一定的差异，其中一种非粘结复合材料表现出有用的牙尖强化。酸蚀技术粘结修复体牙尖在咬合力作用下的变形量明显小于非粘结修复体。
Strain gauges were mounted on 12 maxillary pre-molars which were subjected to a sequence of restorative procedures for MOD preparations. An occlusal stress was applied using servohydraulics, and the cuspal flexure was assessed using a strain gauge. Two bonded and three non-bonded restorative procedures were tested for each tooth. The two bonded conditions showed significantly higher cuspal reinforcement when compared with the MOD preparation and the non-bonded restorative procedures.The non-bonded restorations showed some intragroup differences, with one non-bonded composite showing useful cuspal reinforcement. However, this was much less than that afforded by the bonded technique.The deformation of the cusp under occlusal force in restorations bonded by the acid-etch technique showed much less hysteresis when compared with non-bonded restorations.