从未经治疗的安氏II类错牙合患者从青春期末期到成年早期的牙颌面生长变化。
Dentofacial growth changes in subjects with untreated Class II malocclusion from late puberty through young adulthood.
作者信息
Baccetti Tiziano, Stahl Franka, McNamara James A
机构信息
Department of Orthodontics, University of Florence, Florence, Italy.
出版信息
Am J Orthod Dentofacial Orthop. 2009 Feb;135(2):148-54. doi: 10.1016/j.ajodo.2007.03.033.
INTRODUCTION
The purpose of this longitudinal study was to compare dentofacial growth changes in untreated subjects with Class II Division 1 malocclusion with those in subjects with normal (Class I) occlusion from late puberty through young adulthood.
METHODS
The Class II Division 1 sample consisted of 23 subjects (10 male, 13 female). The Class I sample included 30 subjects (13 male, 17 female). The lateral cephalograms of the subjects in both groups were analyzed at 2 consecutive stages of development: T1, postpubertal observation (cervical vertebral maturation stage 6), and T2, young adulthood stage. The average time between T1 and T2 was 3.5 years. The statistical comparisons of the growth changes in the 2 groups were performed with Mann-Whitney U tests.
RESULTS
From late puberty through young adulthood, dentofacial growth in subjects with untreated Class II malocclusion does not show significant differences when compared with that observed in untreated subjects with normal occlusion.
CONCLUSIONS
These findings show that Class II dentoskeletal disharmony does not exhibit significant growth change from late puberty through young adulthood.
引言
本纵向研究的目的是比较未经治疗的安氏II类1分类错牙合患者与正常（安氏I类）牙合患者从青春期后期到青年期的牙颌面生长变化。
方法
安氏II类1分类样本包括23名受试者（10名男性，13名女性）。安氏I类样本包括30名受试者（13名男性，17名女性）。两组受试者的头颅侧位片在两个连续的发育阶段进行分析：T1，青春期后观察（颈椎成熟阶段6），和T2，青年期阶段。T1和T2之间的平均时间为3.5年。两组生长变化的统计比较采用曼-惠特尼U检验。
结果
从青春期后期到青年期，未经治疗的安氏II类错牙合患者的牙颌面生长与未经治疗的正常牙合受试者相比没有显著差异。
结论
这些发现表明，从青春期后期到青年期，安氏II类牙-骨不协调没有显著的生长变化。
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