CAJ | 학술논문

目的探讨不同角度摇椅弓在种植体支抗内收上牙列过程中的生物力学效应和影响,以期为临床应用种植体支抗内收上牙列时选择合适的摇椅弓角度提供参考.方法建立种植体支抗内收上牙列的三维有限元模型,分析摇椅弓角度为5°、10°、15°时上牙列各牙的移动趋势.结果当摇椅弓角度从5°增大至15°时,对前牙施加的唇向转矩力逐渐增加,对后牙施加的颊向转矩力逐渐增加,前牙的压低效果和后牙的升高效果逐渐明显.结论通过改变摇椅弓角度可较好地控制各牙转矩以及明显改善深覆(牙合).种植体支抗内收上牙列时应根据前后牙情况选择适度的摇椅弓.
목적 탐토불동각도요의궁재충식체지항내수상아렬과정중적생물역학효응화영향,이기위림상응용충식체지항내수상아렬시선택합괄적요의궁각도제공삼고.방법 건립충식체지항내수상아렬적삼유유한원모형,분석요의궁각도위5°、10°、15°시상아렬각아적이동추세.결과 당요의궁각도종5°증대지15°시,대전아시가적진향전구력축점증가,대후아시가적협향전구력축점증가,전아적압저효과화후아적승고효과축점명현.결론 통과개변요의궁각도가교호지공제각아전구이급명현개선심복(아합).충식체지항내수상아렬시응근거전후아정황선택괄도적요의궁.
Objective To investigate the biomechanical effects of micro-implant anchorage for en-masse retraction of the maxillary dentition with different curves of archwires.Methods The mobile trends were calculated when the curve of archwires were 5°,10°,15° on the basis of 3D finite element model.Results With the curve of archwire increasing from 5° to 15°,the torque in anterior teeth and posterior teeth increased gradually,and the intruding effect of anterior teeth and the extruding effect of posterior teeth increased gradually.Conclusions The torque of teeth could be changed effectively with different curve of archwires.The reverse-curve arch wire was suitable for correcting deep overbite caused by over developed anterior alveolar bone.According to the position of posterior teeth,the appropriate curve of archwires should be selected when the implant anchorage was used to retract the whole dentition.