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A Cephalometric Study On The Ossification Pattern Of Cervical Vertebrae In Association With Skeletal Maturity Of Hand And Wrist

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Abstract

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#ÃÊ·Ï#
The purpose of this study was to investigate the ossification patterns of cervical
vertebras in association with bone maturites of hand-wrist and determine the possibility
whether these assessments can be used for evaluation of craniofacial skeletal growth.
The subjects, consisted of 148 males and 133 females aged from 8 to 17 years with
normal occlusion and general health, were divided into 6 stages by the skeletal
maturation of hand-wrist on hand-wrist radiographs. In cephalogram, the concavity of
inferior border, height difference between anterior and posterior border, and
vertico-horizontal ratio of cervical vertebras were measured. The measurements were
analysed statistically by SAS(Statistical Analysis of Science) computerized program. The
results were as follows ;
1. The skeletal maturation occurred earlier in female than in male, and mean chronologic
age at the skeletal maturation stage 4 (the time of maximum growth period) was 14
years in male, 12.4 years in female and showed greatest age difference(P<0.05) .
2. The concavity of inferior border and the vertico-horizontal ratio of cervical vertebrae
were increased according to skeletal maturation of hand and wrist(P<0.05), and the
height difference between anterior and posterior border was decreased but not showed
significance.
3. Correlation coefficient between the skeletal maturation of hand-wrist and the
concavity of inferior border, the vertico-horizontal ratio of cervical vertebrae were 0.7039
¡­0.7918 and 0.7093¡­0.7918, thereby showed close correlation in each order(P<0.05), but
little correlation was showed between height difference _of cervical vertebrae and
skeletal maturation of hand-wrist(¥ã=0.1623¡­0.3226)
4. The concavity of inferior border and the vertico-horizontal ratio of each cervical
vertebrae were decreased significantly(P<0.05) with descending, but the height difference
between anterior and posterior border did not show any significant difference among
different vertebrase
5. The assessments of the concavity of inferior border and the vertico-horizontal ratio of
cervical vertebrae on cephalogram showed possibility to use for evaluation of craniofacial
skeletal growth.

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