亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

The pattern of facial skeletal growth and its relationship to various common indexes of maturation

医学 口腔正畸科 生物
作者
Zachary Joseph Mellion,Rolf G. Behrents,Lloyd D. Johnston
出处
期刊:American Journal of Orthodontics and Dentofacial Orthopedics [Elsevier BV]
卷期号:143 (6): 845-854 被引量:111
标识
DOI:10.1016/j.ajodo.2013.01.019
摘要

Sequential stages in the development of the hand, wrist, and cervical vertebrae commonly are used to assess maturation and predict the timing of the adolescent growth spurt. This approach is predicated on the idea that forecasts based on skeletal age must, of necessity, be superior to those based on chronologic age. This study was undertaken to test this reasonable, albeit largely unproved, assumption in a large, longitudinal sample.Serial records of 100 children (50 girls, 50 boys) were chosen from the files of the Bolton-Brush Growth Study Center in Cleveland, Ohio. The 100 series were 6 to 11 years in length, a span that was designed to encompass the onset and the peak of the adolescent facial growth spurt in each subject. Five linear cephalometric measurements (S-Na, Na-Me, PNS-A, S-Go, Go-Pog) were summed to characterize general facial size; a sixth (Co-Gn) was used to assess mandibular length. In all, 864 cephalograms were traced and analyzed. For most years, chronologic age, height, and hand-wrist films were available, thereby permitting various alternative methods of maturational assessment and prediction to be tested. The hand-wrist and the cervical vertebrae films for each time point were staged. Yearly increments of growth for stature, face, and mandible were calculated and plotted against chronologic age. For each subject, the actual age at onset and peak for stature and facial and mandibular size served as the gold standards against which key ages inferred from other methods could be compared.On average, the onset of the pubertal growth spurts in height, facial size, and mandibular length occurred in girls at 9.3, 9.8, and 9.5 years, respectively. The difference in timing between height and facial size growth spurts was statistically significant. In boys, the onset for height, facial size, and mandibular length occurred more or less simultaneously at 11.9, 12.0, and 11.9 years, respectively. In girls, the peak of the growth spurt in height, facial size, and mandibular length occurred at 10.9, 11.5, and 11.5 years. Height peaked significantly earlier than both facial size and mandibular length. In boys, the peak in height occurred slightly (but statistically significantly) earlier than did the peaks in the face and mandible: 14.0, 14.4, and 14.3 years. Based on rankings, the hand-wrist stages provided the best indication (lowest root mean squared error) that maturation had advanced to the peak velocity stage. Chronologic age, however, was nearly as good, whereas the vertebral stages were consistently the worst. Errors from the use of statural onset to predict the peak of the pubertal growth spurt in height, facial size, and mandibular length were uniformly lower than for predictions based on the cervical vertebrae. Chronologic age, especially in boys, was a close second.The common assumption that onset and peak occur at ages 12 and 14 years in boys and 10 and 12 years in girls seems correct for boys, but it is 6 months to 1 year late for girls. As an index of maturation, hand-wrist skeletal ages appear to offer the best indication that peak growth velocity has been reached. Of the methods tested here for the prediction of the timing of peak velocity, statural onset had the lowest errors. Although mean chronologic ages were nearly as good, stature can be measured repeatedly and thus might lead to improved prediction of the timing of the adolescent growth spurt.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Benhnhk21发布了新的文献求助10
刚刚
13秒前
科研通AI2S应助科研通管家采纳,获得50
28秒前
5433完成签到 ,获得积分10
1分钟前
jiangjiang完成签到 ,获得积分10
1分钟前
吱吱草莓派完成签到 ,获得积分10
1分钟前
2分钟前
小二郎应助科研通管家采纳,获得10
2分钟前
2分钟前
2分钟前
宝贝丫头完成签到 ,获得积分10
2分钟前
英姑应助背后的鞋垫采纳,获得10
2分钟前
桐桐应助Benhnhk21采纳,获得10
2分钟前
Dave发布了新的文献求助10
3分钟前
科研通AI2S应助科研通管家采纳,获得10
4分钟前
Aaron完成签到 ,获得积分0
4分钟前
4分钟前
7分钟前
Liufgui应助Dave采纳,获得10
7分钟前
Benhnhk21发布了新的文献求助10
7分钟前
yydragen应助yyds采纳,获得10
7分钟前
Hisam完成签到,获得积分10
7分钟前
lhy完成签到,获得积分10
7分钟前
lhy发布了新的文献求助10
7分钟前
7分钟前
积极的台灯应助Benhnhk21采纳,获得10
7分钟前
Hisam发布了新的文献求助10
7分钟前
yyds完成签到,获得积分0
7分钟前
科研通AI2S应助科研通管家采纳,获得10
8分钟前
木木完成签到 ,获得积分10
8分钟前
8分钟前
董可以发布了新的文献求助10
8分钟前
小马甲应助董可以采纳,获得10
8分钟前
9分钟前
Boren发布了新的文献求助10
9分钟前
梨子完成签到,获得积分10
9分钟前
Boren完成签到,获得积分10
9分钟前
WerWu完成签到,获得积分10
10分钟前
彭于晏应助Dc采纳,获得10
11分钟前
12分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990290
求助须知:如何正确求助?哪些是违规求助? 3532146
关于积分的说明 11256472
捐赠科研通 3271042
什么是DOI,文献DOI怎么找? 1805197
邀请新用户注册赠送积分活动 882302
科研通“疑难数据库(出版商)”最低求助积分说明 809234