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The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
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Age estimation using lower permanent first molars on a panoramic radiograph: A digital image analysis.

Ranjdar M Talabani1, Mohammed T Baban2, Mohammed A Mahmood3

  • 1Department of Conservative Dentistry, University of Sulaimani, Faculty of Medical Science, School of Dentistry, Iraq.

Journal of Forensic Dental Sciences
|May 26, 2015
PubMed
Summary

Dental age estimation is accurate using the tooth-coronal index (TCI) of mandibular first molars. This method provides reliable age predictions for the Sulaimani population based on radiographic measurements.

Keywords:
Computer-based image analysiscoronal heightcoronal pulp cavity heightforensic dentistrytooth–coronal index

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Area of Science:

  • Forensic Dentistry
  • Anthropology
  • Radiology

Background:

  • Dental age estimation is crucial in forensic and anthropological studies.
  • Digital panoramic radiography offers a non-invasive method for assessing dental morphology.
  • The mandibular first molar exhibits age-related changes in its coronal pulp cavity.

Purpose of the Study:

  • To evaluate the efficacy of digital panoramic radiography for age estimation.
  • To analyze metric measurements of morphological parameters of the permanent mandibular first molar.
  • To establish a correlation between tooth-coronal index (TCI) and chronological age in the Sulaimani population.

Main Methods:

  • A sample of 96 individuals aged 20-59 years underwent digital panoramic radiography.
  • Measurements of coronal height (CH) and coronal pulp cavity height (CPCH) of mandibular first molars were taken.
  • The tooth-coronal index (TCI) was calculated and regressed against chronological age.

Main Results:

  • A strong negative linear regression was observed between age and TCI (r² = 0.49).
  • ANOVA confirmed a significant relationship between age and TCI (P = 0.0000).
  • A regression equation (Predicted age = 3.78 - 0.064 TCI) showed no significant difference between real and estimated ages.

Conclusions:

  • The tooth-coronal index (TCI) of mandibular first molars is a reliable indicator for age estimation.
  • Digital panoramic radiography combined with TCI analysis provides accurate age predictions for the Sulaimani population.
  • Regression equations derived from TCI measurements can be effectively used for forensic and anthropological age assessments.