Peck S, Peck H
Am J Orthod. 1979 Nov;76(5):491-6. doi: 10.1016/0002-9416(79)90253-7.
Orthodontic extraction frequency describes the percentage of an orthodontic patient population experiencing extractions of one or more permanent teeth, excluding third molars. It is a useful statistical measure of the many variables associated with the extraction-nonextraction decision. For a study sample of 537 North American white orthodontic patients, the frequency of tooth extraction was determined as 42.1 percent. This is compared with a range of 6.5 percent to 83.5 percent reported in the world dental literature. Factors responsible for the enormous differences in orthodontic extraction frequency are explored. The study of extraction frequency offers a simple, valuable aid for the clinician to understand better the nature of his patient population, his treatment methods, and his rationalizations.
正畸拔牙频率描述的是正畸患者群体中拔除一颗或多颗恒牙（不包括第三磨牙）的患者所占的百分比。它是与拔牙 - 不拔牙决策相关的众多变量的一项有用统计指标。对于537名北美白人正畸患者的研究样本，拔牙频率确定为42.1%。这与世界牙科文献报道的6.5%至83.5%的范围相比。探讨了导致正畸拔牙频率存在巨大差异的因素。拔牙频率的研究为临床医生更好地了解其患者群体的性质、治疗方法及理由提供了一种简单而有价值的帮助。
