This study was done to observe the changes in calcification and eruption rates and sepuence and eruption timing of developing buccal permanent teeth. Por that purpose, 35 male and 36 female subjects who have no significant mechanical interference in erupting path were selected. Then orthopantomographs were taken with 6 months interval.
Comparative study was done and the following results were obtained :
1. There was no upgrade on the stage of calcification.
2. On the eruption rate, the greatest change was seen at the stage of two. thirds of root completed.
3. The chronologic ages that arrived each calcification stage were -advanced in female subjects than male ones.
4. The seqence of eruption was first premolar, canine, seclond premolar in male both on maxila and mandible, but in female, first premoiar, canine, second premolar on maxilla, and canine, first premolar, second premolar on mandible
|