Abstract
The purpuse of the present study was to analyze the maxillo-facial complex of the children in the prone sleeping position in infancy (PP).
The materials consisted of cephalograms of the decidous dentition obtained from 14 Japanese children (7 boys and 7 girls).
Dimensional and angular analysis were performed.
The results were also compared with the latest cephalometric standards of Japanese children.
The findings were summarized as follows:
1. S-N and N-Me in PP were larger than those in the latest standard cephalometric standards of Japanese children.
2. Y-axis in PP tended to be larger than those in the latest standard cephalometric standards of Japanese children.
3. Facial angle in PP was smaller than those in the latest standard cephalometric standards of Japanese children.
In conclusion, the maxillo-facial complex of PP tend to show a long anterior cranial base, a long facial height, and backward shifting of the mandible.
