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作者在50例需要正牙而拔除下颌第一前磨牙的病员中,观察到尖牙可移到拔牙间隙,但切牙排列很少令人满意。50例病员的初模是在牙拔除后一月内制维持原样。由于尖牙移动的问隙不足,因此有只例停留在原来的位置上,1例拥挤更加严重。所有自行调整位置都在拔牙后第一年之内孙于行。作者在50例需要正牙而拔除下领第一前磨牙的病员中,观察到尖牙可移到拔牙间隙,但切牙排
Of the 50 patients who required orthodontics and removed the first mandibular first premolar, the canine was observed to move to the extraction space, but the sedentary arrangement was seldom satisfactory. The initial model of 50 patients was maintained within 1 month after tooth extraction. Due to lack of access to canines, there was only one stop in the original position. One case of congestion was even more serious. All self-adjusting positions are in the first year after tooth extraction Sun Yu-line. In 50 cases requiring orthodontics to remove the first premolar under the collar, the canine was observed to move to the extraction space, but the incisor row