Objective probe into method and clinical significance of casting cavity - retention form post - core crown in restoring residual crown and root of the short molar 摘要目的：探讨短磨牙残根残冠洞固位形铸桩核冠修复的方法和临床意义。
2.
Methods one hundred and twenty residual crowns and roots of short molars were restored with casting cavity - retention form post - core crown and followed up for 2 ~ 5 years to observe the clinical effect 方法：对120颗短磨牙残根残冠应用洞固位形铸造桩核冠修复，对其临床效果随访2 ~ 5年。
3.
Conclusion casting post - core crown with cavity retention form is a convenient technique which can restore the residual crown and root of the short molars effectively and optimize the retention form as well 结论：洞固位形铸造桩核冠修复短磨牙残根残冠既方便，简洁，又解决修复体固位困难问题。
