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This study aimed to assess ex vivo the accuracy of cone-beam computed tomography (CBCT), as compared to operative microscope, for evaluating pulp chamber size. A total of forty teeth were extracted for periodontal reasons and a horizontal section was done at the most apical level of the cement-enamel junction. The pulp chamber was photographed using a digital camera connected to an optical microscope. Then, the tooth was scanned with CBCT and the horizontal slide matching the anatomical section of pulp chamber was digitally stored. The pulp chamber section area was measured through image analysis software. The two methods provided similar results, either for monoradicular (P = 0.14) or multiradicular teeth (P = 0.93). Correlation was statistically significant (P < 0.0001), being the coefficient r = 0.89 and 0.94 for monoradicular and multiradicular teeth, respectively. Conclusively, CBCT is suitable for pulp chamber morphology evaluation. However, it has limitations in detecting the anatomical variability of small branches in root canal system.

Cone-beam computed tomography accuracy in pulp chamber size evaluation: An ex vivo study / M. Maddalone, C. Citterio, A. Pellegatta, M. Gagliani, L. Karanxha, M. Del Fabbro. - In: AUSTRALIAN ENDODONTIC JOURNAL. - ISSN 1329-1947. - (2019 Oct 16). [Epub ahead of print]

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