颈椎骨龄定量分期法在评估前后面高生长发育中的初步应用  

Longitudinal study of facial height growth according to quantitative cervical vertebral maturation

作　　者：陈莉莉[2] 许天民[1] 

机构地区：[1]北京大学口腔医学院·口腔医院正畸科 [2]华中科技大学同济医学院附属协和医院口腔中心,武汉 430022

出　　处：《中华口腔正畸学杂志》2010年第3期131-135,共5页Chinese Journal of Orthodontics

基　　金：基金项目：“十五”国家科技攻关课题（2004BA720A25）

摘　　要：目的 以颈椎骨龄定量分期法（quantitative cervical vertebral maturation,QCVM）为划分标准,探讨QCVM Ⅰ至Ⅳ期前后面高生长发育的纵向变化特点.方法 从901位中小学生中挑选87位（女55,男32）正常（牙合）个体,每年定期拍摄正中（牙合）位头颅侧位片及手腕骨片,连续6年,组成8-18岁混合纵向资料,比较QCVM Ⅰ至Ⅳ期前后面高的生长量、相对生长速率和生长完成百分比.结果 ①所有面高参数最大平均生长量均处于高峰期（第Ⅱ期）,最小生长量均处于结束期（第Ⅳ期）;第二大生长量除下颌升支高度及男性后面高处于减速期（第Ⅲ期）,其余均为加速期（第Ⅰ期）;②所有参数从QCVM Ⅰ至Ⅳ期呈现加速→高峰→减速→结束的生长趋势,最大相对生长速率均发生在第Ⅱ期（高峰期）,第Ⅰ期（加速期）次之;③虽然在生长量和相对生长速率上存在男女性别差异,但男女在颈椎发育的不同阶段完成相似的生长百分比.结论 颈椎骨龄定量分期法能评估前后面高的发育阶段、估计生长速率、预测生长剩余百分比,有重要的临床应用价值.Objective To investigate the longitudinal changes of facial height according to quantitative cervical vertebral maturation （QCVM） for adolescents with normal occlusion. Methods Mixed longitudinal data were used. The samples included 87 adolescents aged 8～18 years with normal occlusion （32 males, 55 females） selected from 901 candidates. Sequential lateral cephalograms and hand-wrist films were taken once a year for 6 years. The growth magnitude （GM）, relative growth rate （RGR） and the percentage of facial growth remaining （PGR） of facial height parameters according to QCVM were measured and analyzed. Results ①The largest GM was happened during the period of high velocity in QCVM Ⅱ for both genders, and the least GM was during the period of completing velocity in QCVM Ⅳ. The next largest growth was during the period of accelerating velocity in QCVM Ⅰ with the exception of Ar-Go and male S-Go parameters, which were during the period of decelerating velocity in QCVM Ⅲ. ②All measurements showed a trend towards accelerating velocity→ high velocity→decelerating velocity→ completing velocity from QCVM stageⅠto stage Ⅳ. The largest RGR was all in QCVM Ⅱ, then in QCVMⅠ, and the least was in QCVM Ⅳ. ③Both sexes completed similar percentages of total growth at comparable QCVM stage, even though there were significant gender differences in GM and RGR. Conelusions QCVM could be used to assess the level of skeletal maturation during adolescence, to estimate RGR and predict PGR.

关 键 词：颈椎骨龄定量分期法 Fishman手腕骨龄分期法 

分 类 号：R783.5[医药卫生—口腔医学]