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Dentomaxillofacial Radiology (2009) 38, 156-162
© 2009 British Institute of Radiology
doi: 10.1259/dmfr/61676894

RESEARCH

Evaluation of high-resolution cone beam computed tomography in the detection of simulated interradicular bone lesions

M Noujeim*, TJ Prihoda, R Langlais and P Nummikoski

Department of Dental Diagnostic Science, University of Texas Health Science Center at San Antonio, USA

*Correspondence to: Dental Daignostic Science, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA; E-mail: noujeim{at}uthscsa.edu

Received 12 December 2008; revised 4 April 2008; accepted 7 April 2008

Objectives: The purpose of this study is to assess the accuracy of limited-volume high-resolution cone beam CT (CBCT) in the detection of periodontal bone loss.

Methods: 163 simulated periodontal lesions of different depths were created in dried human hemimandibles. Specimens were imaged using the intraoral paralleling technique and limited-volume CBCT (3DX Accuitomo; Morita Co. Ltd, Kyoto, Japan). Ten viewers examined the images. Data were analysed with receiver operating characteristics (ROC) analysis. ROC curves were generated and the areas under the maximum-likelihood curves (Az) were compared. Other statistical analyses were used to detect the normality of the distribution of the results.

Results: The results are reported as the individual viewer ROC curve areas for each of the two imaging modalities. In all experiments the Az area for CBCT (0.770–0.864) was larger than the Az area for periapical film (0.678–0.783); statistical tests showed a statistically significant difference between the two modalities.

Conclusions: Results indicate that the CBCT technique has better accuracy and diagnostic value than periapical films in the detection of interradicular periodontal bone defects.

Keywords: cone beam computed tomography; periodontology; intraoral radiography






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