Kann KI das Osteoporose-Risiko anhand routinemäßiger Zahnröntgenaufnahmen der Kieferknochendichte abschätzen ?

Osteoporose beeinträchtigt oft die Knochendichte des Kiefers, bevor systemische Symptome auftreten. KI, die mit dentalen Röntgenbildern trainiert wurde, könnte die Knochenmineraldichte ohne zusätzliche Strahlung abschätzen. Dies könnte ein opportunistisches Screening während zahnärztlicher Besuche ermöglichen. Die Genauigkeit hängt von der Bildqualität und der Kalibrierung über verschiedene Bildgebungssysteme hinweg ab.

Background

Osteoporosis often affects jaw bone density before causing systemic symptoms, making opportunistic screening during dental visits attractive. Deep-learning models trained on panoramic dental radiographs (orthopantomograms) analyze trabecular bone microarchitecture to estimate systemic bone loss. Reported performance in validation cohorts reaches sensitivities around 80–90% for identifying low bone mineral density, approaching the accuracy of dual-energy X-ray absorptiometry (DEXA) scans. Variability in X-ray equipment, the absence of standardized acquisition and calibration protocols, and the need for broader validation across diverse populations currently limit clinical adoption. Current tools remain largely research-oriented, though several commercial dental AI platforms have begun to integrate osteoporosis risk-assessment features. AI training relies on large annotated datasets linking radiographic jaw features to DEXA-derived bone mineral density or clinical osteoporosis diagnoses, with cross-site validation essential to ensure generalizability. Calibration across different panoramic systems and patient subgroups is critical to reduce false positives and negatives. Future directions include federated learning to harmonize multi-vendor datasets and integration of AI outputs into electronic health records to facilitate clinician follow-up.