Panoramic Condyle-Eminence Distance as a Predictive Indicator of MRI-Confirmed Temporomandibular Joint Effusion

Karaman İncekürk Ö., Büyüksungur A., Kolsuz M. E.

IADMFR Venice 2025, Venice, İtalya, 16 - 18 Ekim 2025, ss.74, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Venice
  • Basıldığı Ülke: İtalya
  • Sayfa Sayıları: ss.74
  • Ankara Üniversitesi Adresli: Evet

Özet

Panoramic Condyle-Eminence Distance as a Predictive Indicator of MRI-Confirmed Temporomandibular Joint Effusion

Aim:

The aim of this study was to investigate whether the condyle-eminence distance measured on panoramic radiographs can serve as a predictive indicator for temporomandibular joint (TMJ) effusion confirmed by magnetic resonance imaging (MRI) and to establish a clinically applicable cut-off value.

Materials and Methods:

In this retrospective study, 212 temporomandibular joints with available panoramic radiographs and MRI scans were evaluated. Condyle-eminence distances were measured on panoramic radiographs, and effusion presence and severity were classified based on MRI findings. Additionally, the relationship between disc displacement types (with and without reduction) and effusion severity was statistically assessed using Chi-square, Kruskal-Wallis H, Mann-Whitney U tests, and ROC curve analysis.

Results:

No significant association was found between effusion presence and variables such as gender, age, or side (right/left) (p>0.05). However, a statistically significant difference was observed between disc displacement type and effusion severity (p=0.033).

A significant correlation was identified between the condyle-eminence distance and the presence of effusion (p<0.001). The average distance was 2.05 mm in joints without effusion and 1.56 mm in those with effusion. ROC analysis revealed an area under the curve (AUC) of 0.859, indicating strong predictive capacity. The optimal cut-off value for the condyle-eminence distance was determined as 1.89 mm, yielding a sensitivity of 81.1% and a specificity of 81.8%.

Conclusion:

The condyle-eminence distance measured on panoramic radiographs is a highly predictive, easy-to-apply parameter for anticipating MRI-confirmed TMJ effusion. This measurement may provide clinicians with a practical pre-screening tool to support early diagnosis and guide the need for advanced imaging.