Brackett W W, Bailey J H
Department of Restorative and Prosthetic Dentistry, The Ohio State University, College of Dentistry, Columbus 43210.
Oper Dent. 1992 Jul-Aug;17(4):152-5.
In this study, the retention of composite resin and amalgam by a smooth, reverse-tapered pin was compared to that of threaded pins. The smooth pin was significantly lower in retention than the threaded pins for each material, and caused a greater frequency of failure of the restorative material than the threaded pins. The newer smooth pin is probably not an improvement over the conventional threaded design.
在本研究中,将光滑的倒锥形钉与螺纹钉对复合树脂和汞合金的固位力进行了比较。对于每种材料,光滑钉的固位力均显著低于螺纹钉,且导致修复材料的失败频率高于螺纹钉。新型光滑钉可能并不比传统的螺纹设计有所改进。