Evidentiary value of tooth presence/absence patterns for human identification

Area of Science:

• Forensic Odontology
• Human Identification
• Anthropology

Background:

• Dental records are vital for human identification, particularly in mass casualty incidents.
• Restorative treatments enhance identification, but their absence necessitates reliance on natural tooth morphology.
• Limited large-scale databases hinder statistical analysis of tooth presence/absence patterns.

Purpose of the Study:

• To assess the frequency of tooth presence and absence patterns in a large deceased population.
• To evaluate the utility of these patterns as a comparative feature in forensic identification.
• To explore relationships between missing teeth, tooth count, and age.

Main Methods:

• Analysis of dental data from 1343 deceased individuals from historical forensic casework.
• Examination of tooth presence/absence patterns.
• Statistical assessment of pattern frequency and correlations.

Main Results:

• Certain tooth presence/absence patterns were recurrent, but many individuals exhibited unique combinations.
• Significant relationships were found between specific missing teeth.
• A clear correlation between overall tooth count and the age of the individual was confirmed.

Conclusions:

• Tooth presence/absence patterns are valuable comparative features for forensic identification.
• The study highlights the need for larger reference databases to enhance statistical validity.
• Population-specific differences require further investigation for broader applicability.