The reliability of digitized radiographs for dental identification: a Web-based study

Area of Science:

• Forensic Odontology
• Radiographic Analysis
• Legal Evidence

Background:

• Judicial rulings necessitate scientifically tested forensic evidence with published reliability data.
• The admissibility of forensic evidence, including dental identification, is under scrutiny.
• Reliability of radiographic comparison methods requires empirical validation.

Purpose of the Study:

• To assess the reliability of digitized radiographic comparisons for dental identification.
• To evaluate the accuracy and agreement rates of forensic examiners using this method.
• To determine the impact of examiner experience on identification accuracy.

Main Methods:

• Ten forensic dental identification cases with antemortem and postmortem radiographs were presented online.
• Participants with varying forensic backgrounds completed comparisons twice over a one-month interval.
• American Board of Forensic Odontology (ABFO) conclusion levels were used for reporting.

Main Results:

• Overall mean accuracy was 85.5%, with experienced forensic dentists achieving 91% accuracy.
• Dentally trained respondents with prior case experience comprised 72% of participants.
• Inter-examiner agreement for negative identifications was poor, but positive identifications were valid.

Conclusions:

• Digitized radiographic comparison is a valid and accurate method for dental identification.
• Experienced forensic odontologists demonstrate high success rates, supporting method reliability.
• Further research may be needed to improve inter-examiner agreement, especially for negative cases.