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[A longitudinal study of 5 cephalometric plane angles in female children from 7 to 12 years old]
Jing Peng1, Hui Deng, Caifang Cao
1School of Stomatology, Peking University.
Objective:
The aim of this study was to find the laws of angular changes of 5 cephalometric planes in children with mixed dentitions.
Methods:
Nineteen female children were annually examined with X-ray, and the cephalometric analysis was performed in continuous 4 years. Of these children, 10 children were investigated from the age of 7 years old, and the other 9 children from 9 years old. The two groups were longitudinally studied. All of the children were observed almost at the same age (9-10 years old) in the two groups, and the results were analyzed with mixed longitudinal methods. All data were analyzed with SPSS 8.0 software.
Results:
In the observation period, the angular relationship of FH to BaN remain constant among 5 cephalometric planes, and FH to SN was almost in the same situation.
Conclusion:
In mixed dentition, the angular relationship of FH, BaN and SN barely change.
