Background: Assessment of age through teeth is one of the most reliable and simple method than skeletal remains, to calculate age of an individual.
Purpose: The study was carried out with an aim to have a reliable equation for dental age assessment among Egyptian through coronal pulp length /crown length ratio
Materials and methods: A total of 100 digital panoramic radiographs, obtained from archives of orthodontic department for patients from different areas aged 20–60 years examined for their lower premolars by coronal pulp length /crown length ratio measurements
Result: high significant correlation were found between chronological age and Coronal Pulp length /crown length ratio CPL / CL, thus bring the following equation to calculate age in years:
Age in years = 60.677 +_ CPL / CL (-62.351)
Conclusion: coronal pulp length /crown length ratio has the potential to estimate age of an individual on dental radiographs. It is simple, cost effective than histological methods and can be applied to both living and unknown dead.