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Three-dimensional observation of decrease in pulp cavity volume using micro-CT: age-related change.

Hiroko Agematsu1, Hidetoshi Someda, Masatsugu Hashimoto

  • 1Department of Anatomy, Tokyo Dental College, Mihama-ku, Chiba, Japan. agematsu@tdc.ac.jp

The Bulletin of Tokyo Dental College
|June 25, 2010
PubMed
Summary
This summary is machine-generated.

Age-related secondary dentin formation causes pulp chamber volume decrease, with stronger correlations observed in females and specific tooth types. This finding aids in age estimation using dental records.

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Area of Science:

  • Forensic Anthropology
  • Dental Age Estimation

Background:

  • Age estimation is crucial in forensic and anthropological studies.
  • Secondary dentin formation is a known age-related change in teeth.
  • Quantifying pulp chamber volume decrease can provide insights into dental aging.

Purpose of the Study:

  • To investigate the three-dimensional decrease in pulp chamber volume due to secondary dentin formation.
  • To evaluate the correlation between pulp chamber volume decrease and chronological age, considering sex and tooth type.
  • To assess the applicability of this method for age estimation.

Main Methods:

  • Micro-computed tomography (micro-CT) was used to measure three-dimensional pulp chamber volume.
  • Analysis included data stratified by sex (male, female) and tooth type (mandibular central incisor, mandibular second premolar).
  • Statistical correlations were calculated between pulp chamber volume decrease and age groups.

Main Results:

  • Pulp chamber volume decrease was observed with aging, with a slightly greater decrease in females than males.
  • A higher correlation between pulp chamber volume decrease and aging was found in females compared to males.
  • The progression of decrease occurred between the fifties and sixties in males, and the forties and fifties in females.
  • Mandibular central incisors showed a stronger correlation between aging and pulp chamber volume decrease than mandibular second premolars.

Conclusions:

  • Three-dimensional pulp chamber volume decrease is a reliable indicator of age-related secondary dentin formation.
  • The correlation between pulp chamber volume and age is influenced by sex and tooth type, with females and mandibular central incisors showing stronger associations.
  • Micro-CT analysis of pulp chamber volume offers a promising method for dental age estimation in forensic and anthropological contexts.