Assif D, Bitenski A, Pilo R, Oren E
Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel.
J Prosthet Dent. 1993 Jan;69(1):36-40. doi: 10.1016/0022-3913(93)90237-i.
The effect of post design on the fracture resistance of endodontically treated premolars restored with cast crowns was examined in vitro. The experimental model used cast posts and cores to test the effect of post design in a post-core system with identical rigidity. Samples loaded on an Instron testing machine until failure revealed that post design did not influence the fracture resistance of endodontically treated premolars restored with complete cast crowns. There was also no statistically significant difference between restored teeth with or without cast posts and cores.
在体外研究了桩设计对用铸造冠修复的根管治疗前磨牙抗折性的影响。实验模型使用铸造桩核，以在具有相同刚性的桩核系统中测试桩设计的效果。在英斯特朗试验机上加载样本直至破坏，结果显示桩设计不会影响用全冠修复的根管治疗前磨牙的抗折性。有桩核与无桩核修复牙之间也无统计学显著差异。
