Jamison J E, Bishara S E, Peterson L C, DeKock W H, Kremenak C R
Am J Orthod. 1982 Sep;82(3):217-30. doi: 10.1016/0002-9416(82)90142-7.
The purpose of this study was to examine the changes in the maxilla and the maxillary-mandibular relationship as they relate to standing height, which is one indicator of skeletal maturation. The subjects for this study consisted of twenty males and fifteen females for whom cephalograms were taken annually between the ages of 8 and 17 years. Descriptive statistics summarized the changes in standing height and the facial parameters from 8 to 17 years of age. Analysis of variance was used to describe the linear and angular changes and also to compare the mean growth profiles of each of the facial parameters to the growth profile for standing height. Autocorrelation analysis was used to assess the predictability of the growth profiles of the facial parameters from the profile of standing height for the same person. Three periods of growth were also compared: premaximum, maximum, and postmaximum. The findings in the present investigation indicated that (1) the growth profile of the absolute and incremental changes in standing height and the various facial parameters were in general significantly different between males and females; (2) the growth profile of standing height was significantly different from the parameters describing maxillary length and relationship as well as maxillary-mandibular relationship; (3) the changes in maxillary length (A-Ptm) were significantly larger in the maximum period of growth than the other two periods of growth for both males and females; (4) the changes in maxillary relationship were significantly different in the maximum period of growth than in the other two periods of growth in males only; (5) the change in maxillary-mandibular relationship was not significantly different in the three periods of growth; (6) autocorrelation analysis revealed that the growth profile of the facial parameters could not be predicted from the growth profile of standing height of the same individual; that is, the growth profile of height was found to have little predictive value in determining the growth profile of any of the other parameters. The present findings as well as those of a previous investigation indicate that treatment of anteroposterior discrepancies should be initiated as soon as the orthodontist believes that treatment is indicated, rather than waiting for the pubertal "spurt," since the presence, magnitude, and timing of such events in any one patient are highly unpredictable, at least to the degree that renders them clinically useful to the orthodontist.
本研究的目的是探讨上颌骨及上颌-下颌关系与身高（骨骼成熟度的一个指标）相关的变化情况。本研究的受试者包括20名男性和15名女性，在他们8至17岁期间每年拍摄头影测量片。描述性统计总结了8至17岁期间身高和面部参数的变化。方差分析用于描述线性和角度变化，并比较每个面部参数的平均生长曲线与身高的生长曲线。自相关分析用于评估同一人面部参数生长曲线从身高曲线的可预测性。还比较了三个生长阶段：生长高峰前期、生长高峰期和生长高峰后期。本研究的结果表明：（1）男性和女性身高绝对值及增量变化与各种面部参数的生长曲线总体上存在显著差异；（2）身高生长曲线与描述上颌长度及关系以及上颌-下颌关系的参数存在显著差异；（3）男性和女性在生长高峰期上颌长度（A-Ptm）的变化均显著大于其他两个生长阶段；（4）仅在男性中，上颌关系在生长高峰期的变化与其他两个生长阶段存在显著差异；（5）上颌-下颌关系在三个生长阶段的变化无显著差异；（6）自相关分析表明，无法从同一个体的身高生长曲线预测面部参数的生长曲线；也就是说，发现身高生长曲线在确定任何其他参数的生长曲线方面几乎没有预测价值。本研究结果以及先前一项研究的结果表明，正畸医生一旦认为有治疗指征，就应尽早开始治疗前后牙差异，而不是等待青春期“生长突增”，因为任何一名患者中此类事件的存在、程度和时间都高度不可预测，至少到对正畸医生临床有用的程度是不可预测的。
