-Abstract-
The purpose of this study was to obtain the baseline data to develop a prediction
model of craniofacial growth. Hand and wrist radiographs of 606 children aged from six
to seven were obtained for the assessment of bone maturity. The hand and wrist
radiographs were scored by the Tanner-Whitehouse TW2 method of bone maturity
assessment. χ2 test was used to compare skeletal maturity score of
hand-wrist by age by gender.
The obtained results were as follows:
1. There was significant difference between the bone maturity of radius and ulna in six
year-old and seven year-old children by gender(p＜0.01).
2. The bone maturity of 1st proximal phalanges, 3rd proximal phalanges, 3rd middle
phalanges, 5th middle phalanges, 1st distal phalanges, 3rd distal phalanges, 5th distal
phalanges, hamate, triquietral, lunate, scaphoid, trapezium, trapezoid in seven year-old
children by gender were higher than those in six year-old children by gender(p＜0.05).
3. The bone maturity of 5th proximal phalanges in seven year-old girls was higher than
that in six year-old girls(p＜0.01), but not boys(p＞0.05).
4. The bone maturity of capitate in seven year-old boys was higher than that in six
year-old boys(p＜0.01), but not girls(p＞0.05).
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