| 卡环弹性形变限度的测试与临床意义 |
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| 引用本文： | 李力生,麦春,刘岩,李贺平,李丽平,张东,侯燕,王兆和,张厚君. 卡环弹性形变限度的测试与临床意义[J]. 口腔医学研究, 1999, 15(2): 109-110 |
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| 作者姓名： | 李力生 麦春 刘岩 李贺平 李丽平 张东 侯燕 王兆和 张厚君 |
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| 作者单位： | 1. 长春市,130000,第一汽车集团公司职工医院
2. 第一汽车集团公属材料研究所 |
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| 摘 要： | 目的：探讨三种常用金属卡环弹性形变与卡环进入倒凹量的关系。方法：使用作者与有关人员自行设计的卡环张开位移钳，电子万能材料测试仪测试三种金属卡环弹性形变。结果：不锈钢丝卡环弹性最高，１８－８铬镍合金铸造卡环弹性较差，钴铬合金铸造卡环弹性最小。结论：不锈钢丝磨牙卡环进入倒凹量可大于０．５ｍｍ，双尖牙环进入倒凹量０．５ｍｍ，铸造合金磨牙卡环进入倒凹量应小于０．５ｍｍ，铸造合金双尖牙卡环进入倒凹量应小于０．２５ｍｍ。
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| 关 键 词： | 倒凹量 卡环 弹性形变 |
The study of the relationship between the clasp's undercut quantity and elastic deformation |
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| Li Lisheng et al.. The study of the relationship between the clasp's undercut quantity and elastic deformation[J]. Journal of Oral Science Research, 1999, 15(2): 109-110 |
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| Authors: | Li Lisheng et al. |
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| Affiliation: | Li Lisheng et al. |
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| Abstract: | Objective:To study the relationship between the elastic deformation and the clasp's undercut quantity among three routine clasp metals. Methods:Test the elastic deformation of three kinds of metal clasp with clasp open displacement clamp designed by the author and universal electronic material testing machine made in shimadzu Japan. Results:Stainless steel wire clasp's elasticty is the best, casting 18-8 Cr-Ni clasp is lesser, and casting Co-Cr clasp is the worst. Conclusions:Stainless steel clasp's undercut quantity should be more than 0.5mm in molars. Approximately 0.5mm in premolars; cast alloy claspls undercut quantity should be less than 0.5mm in molars less than 0.25 in premolars. |
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| Keywords: | undercut quantity clasp elastic deformation |
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