华西口腔医学杂志
華西口腔醫學雜誌
화서구강의학잡지
WEST CHINA JOURNAL OF STOMATOLOGY
2009年
6期
629-632
,共4页
田军%柳忠豪%张丁%武传君
田軍%柳忠豪%張丁%武傳君
전군%류충호%장정%무전군
托槽%转矩%牙齿相互作用
託槽%轉矩%牙齒相互作用
탁조%전구%아치상호작용
bracket%torque%teeth interaction
目的 研究在同一牙弓中牙齿存在相互作用的条件下,2种槽沟尺寸的托槽在转矩控制方面是否有差异.方法 通过Typodont水浴实验,模拟临床矫治过程,测量结束弓丝为0.431 8 mmx0.635 0 mm不锈钢方丝时,使用0.558 8 mm×0.711 2 mm托槽和0.457 2 mm×0.635 0 mm托槽时上颌5+5共10颗牙齿的唇舌向倾斜度.实验重复10次.通过计算机编程进行计算,将唇舌向倾斜度转换为上颌5+5的转矩余隙角ψ.对2种槽沟尺寸托槽的ψ的绝对值进行配对t检验.结果 2种槽沟尺寸的托槽在转矩控制方面的差异具有统计学意义,当结束弓丝为0.431 8 mm×0.635 0 mm不锈钢方丝时,0.558 8 mm×0.711 2 mm和0.457 2 mm×0.635 0 mm托槽转矩余隙角ψ的绝对值分别为6.140°±3.758°和2.608°±1.479°,2种托槽间转矩余隙角ψ的绝对值的均值相差3.532°,0.457 2 min×0.635 0 mm托槽的转矩余隙角较小.在2种槽沟尺寸托槽的作用下,上颌左右尖牙ψ的绝对值分别为2.560°±2.605°、4.230°±2.817°、1.260°±0.747°和2.070°±0.663°,尖牙较其他牙位ψ的绝对值的差值要小.结论 2种槽沟尺寸的托槽在转矩控制方面存在差异,弓丝尺寸相同时,0.457 2 mm×0.635 0 mm托槽可以更好地控制牙齿的转矩.槽沟尺寸对转矩控制的影响小于以往研究的理论计算值和材料学实验结果,可能是由于同一牙弓牙齿间的相互影响所致.
目的 研究在同一牙弓中牙齒存在相互作用的條件下,2種槽溝呎吋的託槽在轉矩控製方麵是否有差異.方法 通過Typodont水浴實驗,模擬臨床矯治過程,測量結束弓絲為0.431 8 mmx0.635 0 mm不鏽鋼方絲時,使用0.558 8 mm×0.711 2 mm託槽和0.457 2 mm×0.635 0 mm託槽時上頜5+5共10顆牙齒的脣舌嚮傾斜度.實驗重複10次.通過計算機編程進行計算,將脣舌嚮傾斜度轉換為上頜5+5的轉矩餘隙角ψ.對2種槽溝呎吋託槽的ψ的絕對值進行配對t檢驗.結果 2種槽溝呎吋的託槽在轉矩控製方麵的差異具有統計學意義,噹結束弓絲為0.431 8 mm×0.635 0 mm不鏽鋼方絲時,0.558 8 mm×0.711 2 mm和0.457 2 mm×0.635 0 mm託槽轉矩餘隙角ψ的絕對值分彆為6.140°±3.758°和2.608°±1.479°,2種託槽間轉矩餘隙角ψ的絕對值的均值相差3.532°,0.457 2 min×0.635 0 mm託槽的轉矩餘隙角較小.在2種槽溝呎吋託槽的作用下,上頜左右尖牙ψ的絕對值分彆為2.560°±2.605°、4.230°±2.817°、1.260°±0.747°和2.070°±0.663°,尖牙較其他牙位ψ的絕對值的差值要小.結論 2種槽溝呎吋的託槽在轉矩控製方麵存在差異,弓絲呎吋相同時,0.457 2 mm×0.635 0 mm託槽可以更好地控製牙齒的轉矩.槽溝呎吋對轉矩控製的影響小于以往研究的理論計算值和材料學實驗結果,可能是由于同一牙弓牙齒間的相互影響所緻.
목적 연구재동일아궁중아치존재상호작용적조건하,2충조구척촌적탁조재전구공제방면시부유차이.방법 통과Typodont수욕실험,모의림상교치과정,측량결속궁사위0.431 8 mmx0.635 0 mm불수강방사시,사용0.558 8 mm×0.711 2 mm탁조화0.457 2 mm×0.635 0 mm탁조시상합5+5공10과아치적진설향경사도.실험중복10차.통과계산궤편정진행계산,장진설향경사도전환위상합5+5적전구여극각ψ.대2충조구척촌탁조적ψ적절대치진행배대t검험.결과 2충조구척촌적탁조재전구공제방면적차이구유통계학의의,당결속궁사위0.431 8 mm×0.635 0 mm불수강방사시,0.558 8 mm×0.711 2 mm화0.457 2 mm×0.635 0 mm탁조전구여극각ψ적절대치분별위6.140°±3.758°화2.608°±1.479°,2충탁조간전구여극각ψ적절대치적균치상차3.532°,0.457 2 min×0.635 0 mm탁조적전구여극각교소.재2충조구척촌탁조적작용하,상합좌우첨아ψ적절대치분별위2.560°±2.605°、4.230°±2.817°、1.260°±0.747°화2.070°±0.663°,첨아교기타아위ψ적절대치적차치요소.결론 2충조구척촌적탁조재전구공제방면존재차이,궁사척촌상동시,0.457 2 mm×0.635 0 mm탁조가이경호지공제아치적전구.조구척촌대전구공제적영향소우이왕연구적이론계산치화재료학실험결과,가능시유우동일아궁아치간적상호영향소치.
Objective To study the influence of two slot size brackets on torque control when teeth interacted in the same arch.Methods After the upper arch was aligned and leveled in Typodont study,the inclinations of upper teeth 5+5 were measured when 0.457 2 mm×0.635 0 mm OPA-K brackets and 0.558 8 mm×0.711 2 mm OPA-K brackets were filled with 0.431 8 mm×0.635 0 mm stainless steel wire.This experiment was duplicated 10 times.The inclin of each tooth were transformed to the absolute values of the torque play angle ψ by computing program,and paired- t test was used.Results The two kinds of slot size brackets were different with statistical significance on torque control.When the brackets were filled with 0.431 8 mm×0.635 0 mm stainless steel wire,the absolute values of the angle ψ in 0.558 8 mm×0.711 2 mm and 0.457 2 mm×0.635 0 mm slot size brackets were 6.140°±3.758° and 2.608°± 1.479° respectively,and the average difference of that between the two slot size brackets was 3.532°.The absolute values of the angle ψ in the upper left and right canine brackets were 2.560°±2.605°,4.230°±2.817°,1.260°±0.747° and 2.070°±0.663° respectively,and average differences between them were smaller than that in the other teeth.Conclusion There was difference between the two kinds of slot size brackets on torque control,and 0.457 2 mm×0.635 0 mm slot size bracket controls torque better when filled with the same size wire.In this study,the teeth interaction in the same arch probably caused the result that the difference of two slot size brackets on torque control was less than the study results of the theory calculations and material studys before.
