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題名 | Laceback作用機轉的評估=The Evaluation to the Mechanism of Laceback |
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作者 | 林政毅; 廖炯琳; | 書刊名 | 中華牙醫學雜誌 |
卷期 | 16:3 1997.09[民86.09] |
頁次 | 頁193-196 |
分類號 | 416.97 |
關鍵詞 | 繫結後綁; 齒列矯正; Laceback; |
語文 | 中文(Chinese) |
中文摘要 | 使用直式弧線矯正器系統的醫師們,通常會為在矯正治療的平齊排列牙齒時期, 如何能一方面先將犬齒後退,以解決前牙區擁擠的情形;同時又能防止前牙外翻,門齒間垂 直覆咬加深等問題所深深困擾。因此,Dr. McLaughlin 及 Dr. Bennett 便於 1989 年提出 "laceback" 的作法企圖來加以解決。 他們認為 laceback 可先將犬齒牙冠向遠心側拉動, 其後再由於矯正主線的作用,犬齒牙根便得以回正,也因為犬齒牙冠得到適當控制的緣故, 所以,前述所有的難題都迎刃而解。然而事實上吾人認為其作用機轉並非如此,故而本文內 容擬就 laceback 的真正作用機轉作一深入探討。 |
英文摘要 | During the stage of leveling and aligning, it is one of most critical problems of straight wire appliance that the preangulation of canine brackets make the anterior teeth flared out, and then, increase anchorage strain for the molars. Some orthodontist suggested elastic chain from molar to canine to solve the above problems, but distal tipping of canine and bite deepening are side effects for the inadequate stiffness of leveling archwire. Dr. McLaughlin and Dr. Bennett introduced "laceback" technique to solve the problem in 1989. They thought the laceback not only prevented the cuspid crowns from tipping forward, but actually resulted in surprisingly effective distal cuspid movement without the tipping effect the occurred with elastic forces. But we think the mechanism of laceback is not what they said. We modify the laceback technique and try to explain the mechanism of laceback in this article. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。