الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
The aim of the study was to:
1- Determine the eruption date of permanent and primary teeth.
2- Determine the sequence of eruption of permanent and primary teeth.
3- Correlate between chronological and developmental age of eruption of
permanent and primary teeth in a group of Egyptian children in
Qalubia Governorate in urban and rural areas.