The purpose of this study was to obtain the baseline data to develop a prediction model of craniofacial growth. Hand and wrist radiographs of 713 six year-old children 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.
The obtained results were as follows:
1. There was no significant difference between bone maturity of radius of male and female in six year-old children (P>0.0,5).
2. The bone maturity of Ulna, 1st proximal phalanges, 3rd proximal phalanges, 5th proximal phalanges, 3rd middle phalanges, 5th middle phalanges, 1st distal phalanges, 3rd distal phalanges, 5th distal phalanges, capitate bone, hamate bone, triquietral bone, lunate bone, scaphoid bone, trapezium bone and trapezoid bone in females were higher than those in males(P<0.05).
3. The bone maturity of ulna was the lowest in six year-old children.
4. The bone maturity of capitate bone and radius were the highest in six year-old children.
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