[A longitudinal study of 5 cephalometric plane angles in female children from 7 to 12 years old].
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.


CONCLUSIONS
In mixed dentition, the angular relationship of FH, BaN and SN barely change.
Peng
Jing
J
School of Stomatology, Peking University.
Deng
Hui
H
Cao
Caifang
C
D002508:Cephalometry; D002648:Child; D003766:Dental Occlusion; D003818:Dentition, Mixed; D005145:Face / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008445:Maxillofacial Development; D011859:Radiography; D012016:Reference Values; D012886:Skull / Q000033:anatomy & histology / Q000000981:diagnostic imaging*