Cone-beam computed tomography accuracy in pulp chamber size evaluation: An ex vivo study

Marcello Maddalone, Claudio Citterio, Alberto Pellegatta, Massimo Gagliani, Lorena Karanxha, Massimo Del Fabbro

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)88-93
Number of pages6
JournalAustralian Endodontic Journal
Issue number1
Publication statusPublished - 2020


  • cone-beam computed tomography
  • ex vivo study
  • pulp chamber
  • root canal system
  • root canal treatment

ASJC Scopus subject areas

  • Dentistry(all)


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