弯曲构形对不锈钢圆丝矫治器刚度的影响研究

华西口腔医学杂志

弯曲构形对不锈钢圆丝矫治器刚度的影响研究

刘筱琳1，韩向龙2，白丁3，张洪荣4, 贺燕2，叶禹2

1.大连市口腔医院正畸科，辽宁大连116021； 2.四川大学华西口腔医院正畸科；3.口腔疾病研究国家重点实验室，四川大学； 4.四川省机械研究设计院理化计量中心，四川成都610041

收稿日期:2008-12-25 修回日期:2008-12-25 出版日期:2008-12-20 发布日期:2008-12-20
通讯作者: 白丁，Tel：028-85502207
作者简介:刘筱琳（1971-），女，辽宁人，副主任医师，硕士
基金资助:
四川省应用基础研究基金资助项目（03JY029-088-2）

Effect of loop configuration on appliance stiffness of stainless steel round wire

LIU Xiao-lin1, HAN Xianglong2, BAI Ding3, ZHANG Hong-rong4, HE Yan2, YE Yu2

1. Dept. of Orthodontics, Dalian Stomatological Hospital, Dalian 116021, China；2. Dept. of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China; 3. State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; 4. Physical-Chemical Metrology Center, Sichuan Provincial Machinery Research and Design Institute, Chengdu 610041, China

Received:2008-12-25 Revised:2008-12-25 Online:2008-12-20 Published:2008-12-20
Contact: BAI Ding，Tel：028-85502207

摘要/Abstract

摘要：

目的探讨不同的弯曲构形对不锈钢圆丝矫治器刚度的影响规律。方法采用自行研制的微型正畸弓丝测试仪，将直径为0.36、0.41、0.46 mm的不锈钢圆丝按既定的弯曲参数弯制成跨度相同的匣形曲、双水平曲和双垂直曲，行加载实验，研究其载荷形变规律。结果在弓丝尺寸、跨度相同的情况下，直径为0.36、0.41、0.46 mm的匣形曲、双水平曲、双垂直曲相比较，其矫治器刚度递增。结论弯曲的构形对矫治器刚度有显著的影响，匣形曲、双水平曲、双垂直曲三者相比，匣形曲的力学性能最佳。匣形曲能够产生轻而持续的、可控的矫治力，且0.41 mm的匣形曲在产生0.01～0.02 N·m最适力矩时，有合适的激活范围。临床上在矫正个别轻、中度倾斜错位牙时，宜首选0.41 mm的匣形曲不锈钢圆丝。

关键词: 不锈钢圆丝, 矫治器刚度, 载荷形变率

Abstract:

Objective To investigate the effect of loop configuration on appliance stiffness of stainless steel round wire. Methods Some stainless steel round wires with various cross-sectional dimension（0.36, 0.41, 0.46 mm） were selected. Box loops, double horizontal loops, and double vertical loops were manufactured according to established parameters, and loading experiments were carried out with a micro-orthodontic archwire testing apparatus. Results When the cross-sectional dimension and the span were identical, the appliance stiffness of the box loops, double horizontal loops, and double vertical loops increased successively. Conclusion Configuration of loops exert a great influence on appliance stiffness, and the mechanical properties of box loop are optimal. The force generated by box loop was lighter, slowly decreasing, and easier to be controlled. The activation range of box loop（0.41 mm） was appropriate when the produced optimal moment was between 0.01～0.02 N·m. Box loop（0.41 mm） is preferred to rectify the individual tooth with mild or moderate mesiodistal displacement.

Key words: stainless steel round wire, appliance stiffness, load deflection rate

刘筱琳韩向龙白丁张洪荣贺燕叶禹. 弯曲构形对不锈钢圆丝矫治器刚度的影响研究[J]. 华西口腔医学杂志.

LIU Xiao-lin1, HAN Xianglong2, BAI Ding3, ZHANG Hong-rong4, HE Yan2, YE Yu2. Effect of loop configuration on appliance stiffness of stainless steel round wire[J]. West China Journal of Stomatology.