DETECTION OF FRACTURES IN THE DANGER ZONE OF ENDODONTICALLY TREATED TEETH USING DIFFERENT CBCT DEVICES

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Boyanmiş M. K., Efeoğlu S., Buğday B., Çelikten B., Nalçaci R., Sevimay F. S.

European Society of Endodontology, Paris, Fransa, 3 - 06 Eylül 2025, ss.101, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Paris
  • Basıldığı Ülke: Fransa
  • Sayfa Sayıları: ss.101
  • Ankara Üniversitesi Adresli: Evet

Özet

AIM: To evaluate the effectiveness of two different cone-beam computed tomography (CBCT) devices in

detecting fractures in the danger zone of endodontically treated mandibular molar teeth.

Methodology: This in vitro study compares the diagnostic performance of two CBCT devices, Newtom 7G

and Newtom GO, in detecting fractures in the danger zone of endodontically treated mandibular molar teeth.

The “danger zone” is a structurally weakened region in mandibular molar teeth that becomes more

susceptible to fractures following root canal preparation. The study used extracted human mandibular molar

teeth with mesially curved roots. Each tooth was prepared up to F3 with ProTaper Gold (Dentsply Sirona)

files and filled with AH Plus (Dentsply DeTrey, Konstanz, Germany) root canal sealer and 30.06

gutta-percha. Fracture lines were created using an Instron (Norwood, MA) Universal Testing Machine.

A total of 57 CBCT images were acquired using both CBCT devices, each employing nine imaging protocols.

Newtom 7G showed superior diagnostic performance and voxel size options compared to Newtom GO.

Three independent observers assessed the images using a five-point confidence scale. Diagnostic accuracy

was assessed using sensitivity, specificity, positive and negative predictive values (PPV, NPV). Observer

agreement was analyzed with Cohen’s kappa coefficient to evaluate consistency.

The tomographic images were digitally recorded for analysis. This study aims to identify which CBCT device

provides the most accurate diagnostic results for detecting fractures in the danger zone of root canal-treated

teeth.

Results: This study highlights the importance of selecting the right CBCT device and optimizing voxel

settings to improve diagnostic accuracy in endodontic applications. The research offers valuable insights into

enhancing fracture detection in root canal-treated teeth through a comparative analysis of imaging protocols.

These findings support better clinical decision-making and contribute to developing more effective treatment

strategies, ultimately leading to improved patient outcomes and long-term success in endodontic therapies.