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前牙拥挤,尤其是侧切牙、尖牙唇舌向错位畸形是临床上常见的错(?)畸形,严重拥挤者需拔除第一双尖牙减数后再制作矫正器。作者对轻度前牙拥挤的病例,采用第一双尖牙在局部麻醉下行一次性根管治疗,并对第一双尖牙的近远中减径,为前牙拥挤畸形提供间隙,使拥挤的牙进入正常牙列,从而达到既不拔牙又恢复正常的牙弓形态,使其功能和美观都得到改善。作者对56例(男性36例,女性20例,年龄13-20岁的前牙拥挤病例(每个牙间隙差5mm以下)采用第一双尖牙根管治疗后片切近中远中减径后,就近提供间隙,使错位的侧切牙及尖牙进入正常位置。此法既可保持其正常的(?)关系,又可获得适当的足够的间隙,方法简便,疗程短,疗效佳。
Crowded anterior teeth, especially lateral incisors, canine deformity is a common clinical mistake (?) Deformity, severe crowding need to be removed after the first pair of canine evisceration and then make the appliance. The author of mild cases of crowded anterior teeth, the use of the first pair of canines in the local anesthesia under the premise of a one-time root canal treatment, and the first pair of canine farther in the reduction, to provide anterior crowded deformity to provide crowded Of the teeth into the normal dentition, so as to achieve neither normal extraction of dental arch shape, make its function and appearance are improved. The author of 56 cases (36 males, 20 females, aged 13-20 years old cases of crowded crowns (each tooth gap 5mm below) after the first canine root canal treatment of film cut nearly mid-range after the reduction, The gap is provided nearby to allow the dislocated lateral incisors and canines to enter the normal position.This method can maintain its normal (?) Relationship and obtain adequate and adequate clearance, the method is simple, the treatment is short, and the curative effect is good.