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牙列拥挤是最常见的错(牙合)畸形。我科自1987～1992年共矫治牙列拥挤患者251例,报告如下。 临床资料 251例患者中男113例,女138例。年龄最小10岁,最大41岁,其中18岁以下患者204例,占总数81.2％。根据患者牙列拥挤程度分Ⅰ度、Ⅱ度、Ⅲ度三类。见下表:矫治方法 首先进行牙弓间隙和拥挤的分析,在牙(牙合)模型上用0.5mm铜丝测量牙槽弓的长度,用游标卡尺测量每一个牙齿的最大近远中径,将双尖牙、尖牙和切牙的测量值相加之和作为整个的牙量。用牙槽弓长度和实际牙量总和之间差值就是所缺乏的间隙。同时还要考虑矫正下切牙倾斜度及矫正Spee氏曲线所需要的间隙。综合以上三方面因素决定矫正所需间隙。 根据患者牙列拥挤程度决定矫治方法:采用固定矫治器成活动矫治器,采用减数矫治或扩弓矫治。
Dental crowding is the most common malocclusion. Our department from 1987 to 1992 a total of 251 cases of crowding in patients with dental crowding, the report is as follows. Clinical data 251 patients, 113 males and 138 females. The youngest 10 years old, maximum 41 years, including 204 patients under the age of 18, accounting for 81.2% of the total. According to the degree of crowding of patients with dentition Ⅰ degree, Ⅱ degree, Ⅲ degree three categories. See the following table: The method of correction First of all, dental arch clearance and crowding analysis, in the occlusal model using 0.5mm copper wire to measure the length of the alveolar arch, with a caliper to measure the maximum mesial diameter of each tooth will be The sum of the bifidus, canine, and incisors measures the total amount of teeth. The gap between the length of the alveolar arch and the sum of the actual teeth is the lack of space. At the same time also consider the correction of incisors incisors and correction of Spee's curve required gap. Based on the above three factors decided to correct the gap required. Determine the degree of crowding according to the degree of dentition patients with orthodontic treatment methods: the use of fixed appliance into the activity of the appliance, the use of reduction or augmentation correction.