The purpose of this study was to investigate the growth patterns of growth patterns of craniofacial areas in association with ossification events of Hand-Wrist in growing children.
The subjects used in this study were 482 children, ranging from 8 to 16 years of age, with good health, none of them received orthodontic treatment. Cephalometric radiographs and Hand-wrist radiographs were used to evaluate the growth of the
craniofacial area and the hand-wrist area, and their relationships. Datas were analyzed by SAS statistical program on computer.
@ES The results were as follows:
@EN 1. The mean chronologic age at skeletal maturation stage 3(pubertal growth onset) was 12.2 years im male and 11.0 year in female, and skeletal maturation stage 4 (pubertal growth peak) was 13.9 years in male and 12.4 years in female.
The timing of the skeletal maturation stage 4 was synchronous with peak height velosity (PHV) but the skeletal maturation stage 3 occured slightly later than onset of PHV.
2. Increased measurements in accordance with skeletal maturation were anterior cranial base length, posterior cranial base length, ramus height, mandibular body length, anterior facial height, posterior facial height, facial length, facial
depth,
SNA,
SNB, facial plane angle, and APDI. In contrast, decreased measurements were upper and lower gonial angle, and mandibular plane angel(SN-Go Gn).
3. There was a close correlation between linear growth in craniaofacial area and the skeletal maturity in hand-wrist area but the angular measurements (except SNA, SNB, gonial angle) and the denture pattern showed low correlation with skeletal
maturation of hand-wrist area.
4. The growth rate of cranial area was even but that of mandibular area was in peak synchronous with pubertal growth spurt on had-wrist area.
5. The timing of each skeletal stage in hand-wrist proceeded forward in girls than in boys but linear measurements of craniofacial area were larger in boys than in girls at each stage of skeletal maturity.
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