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目的通过对大理白族正常牙合青少年牙颌模型进行测量,建立其牙、牙弓大小和牙列指数的正常值标准。方法于2011年1月至2012年8月,普查大理地区的中学,随机选出97名大理白族正常牙合青少年,制备牙颌模型,用游标卡尺测量其牙冠宽度、牙弓大小和指数,采用SPSS10.0软件包对数据进行统计学处理,并对其特征进行分析。结果大理白族正常牙合青少年的牙冠宽度除第一、第二前磨牙外均为男性大于女性;牙弓宽度、长度为男性大于女性;Bolton、Pont指数男女差异无统计学意义。结论确立了大理白族正常牙合青少年牙、牙弓测量项目以及Bolton、Pont指数的正常值标准,对指导正畸临床有一定的参考价值。
Objective To establish a normal standard of dentin, dental arch size and dentition index by measuring the dental occlusion of Dali Bai nationality normal occlusion adolescents. Methods From January 2011 to August 2012, 97 Dali Bai normal occlusion adolescents were randomly selected in secondary schools in Dali area to prepare dental models. The crown width, dental arch size and index were measured by vernier calipers. The SPSS 10.0 software package statistically processed the data and analyzed its characteristics. Results The width of crowns of Dali Bai normal occlusion adolescents was higher than that of females in both the first and second premolar teeth. The width of dental arch and the length of males were greater than that of females. The Bolton and Pont indices had no significant difference between males and females. Conclusion Dali Bai normal occlusion adolescent teeth, dental arch measurement items and Bolton, Pont index of the normal value of the standard of orthodontic clinical guidance has some reference value.