不同外冠材料套筒冠固位力的比较研究

摘要

Objective To compare the telescope crown retention by two kinds of outer crown materials. Methods All ceramic inter crowns were made on the standard abutment,and Co-Cr alloy and pure titanium were used as the materials of outer crowns,respectively. The retention was measured after insertion/separation process. Results The retention of pure titanium outer crown was bigger than that of Co-Cr alloy outer crown(P < 0. 05 ) . Conclusion The property of outer crown materials is related to the telescope crown retention , and pure titanium outer crown could provide the longer lasting retention.%目的 探讨两种外冠材料对套筒冠固位力的影响. 方法 在标准代型上制作全瓷内冠,外冠分别采用钴铬合金和纯钛制作,经循环摘戴后测试其固位力值.使用SPSS13.0软件包对数据进行￡检验. 结果 纯钛外冠组固位力大于钴铬合金外冠组,差异具有显著性(P＜0.05). 结论 外冠材料性能与套筒冠固位力相关,纯钛外冠更能提供长期持久的固位力.