Chaconas S J, Caputo A A, Niu G S
University of California, School of Dentistry, Section of Orthodontics, Los Angeles 90024.
Angle Orthod. 1991 Spring;61(1):35-42. doi: 10.1043/0003-3219(1991)061<0035:BSOCBW>2.0.CO;2.
The purpose of this investigation was to determine the shear and tensile bond strengths of various ceramic and ceramic-filled brackets in combination with commonly used bonding systems. One monocrystalline, two polycrystalline and one ceramic-filled plastic bracket types were tested in combination with one light-cured and two chemically-cured bonding systems. Bonding procedures were performed on properly prepared human teeth. Shear and tensile tests were performed on an Instron test machine. The shear bond strength of the mono- and polycrystalline ceramic brackets was not affected by the bonding system. There was a difference among bonding systems used with the ceramic-filled plastic bracket. Ceramic-filled plastic and polycrystalline ceramic brackets exhibited the greatest resistance to tensile force, while monocrystalline brackets showed the highest propensity for tensile fracture of the wings.
本研究的目的是确定各种陶瓷及陶瓷填充托槽与常用粘结系统组合时的剪切和拉伸粘结强度。对一种单晶、两种多晶和一种陶瓷填充塑料托槽类型与一种光固化和两种化学固化粘结系统进行了测试。在经过适当准备的人牙上进行粘结程序。在英斯特朗试验机上进行剪切和拉伸试验。单晶和多晶陶瓷托槽的剪切粘结强度不受粘结系统的影响。陶瓷填充塑料托槽所使用的粘结系统之间存在差异。陶瓷填充塑料和多晶陶瓷托槽表现出对拉力的最大抵抗力，而单晶托槽的翼部拉伸断裂倾向最高。
