What the study found
Periodontal ligament (PDL, the tissue that holds a tooth in its socket) visibility in third molars was associated with age and showed good ability to distinguish individuals aged 21 or older in this Turkish sample. The authors describe this as a reliable and reproducible complementary tool for threshold-based forensic age estimation.
Why the authors say this matters
The study suggests this may help forensic age assessment near legally relevant age thresholds after dental maturation is complete, especially around the 21-year cut-off. The authors conclude it may support probabilistic decision-making and could contribute to a multimodal forensic age estimation framework.
What the researchers tested
The researchers retrospectively analyzed 1,049 digital orthopantomograms (panoramic dental X-rays) from people aged 15 to 25 years. They assessed PDL visibility in maxillary and mandibular third molars using the Olze et al. staging system and analyzed links with age, sex, and tooth position.
What worked and what didn't
Advanced PDL visibility stages were significantly associated with increasing age. Mandibular third molars provided the most informative staging patterns, and receiver operating characteristic (ROC) analysis showed an area under the curve of 0.79 for identifying people aged 21 or older, which the abstract describes as good discriminative accuracy with balanced sensitivity and specificity. Substantial intra- and inter-observer agreement was reported.
What to keep in mind
The abstract does not provide detailed limitations beyond the statement that the method is complementary rather than for exact age prediction. The findings are specific to a Turkish population and to third molars on digital orthopantomograms.
Key points
- PDL visibility in third molars was associated with increasing age.
- The method showed good discrimination for identifying individuals aged 21 or older, with an AUC of 0.79.
- Mandibular third molars were the most informative teeth in the analysis.
- The study reported substantial intra- and inter-observer agreement.
- The authors describe the approach as complementary, not for exact age prediction.
Disclosure
- Research title:
- Third molar PDL visibility helped classify age at 21
- Authors:
- Mehmet Oguzhan Ergin, Kamile Ercıyas, Sevim Samioglu Gunes, Aysun Baransel Isır
- Institutions:
- Harran University, Gaziantep University
- Publication date:
- 2026-02-24
- OpenAlex record:
- View
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