In-vitro assessment of cone beam computed tomography in the detection of fractures in the vertical plane Public Deposited

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  • March 21, 2019
  • Vanderburg, Aurelia
    • Affiliation: School of Dentistry, Department of Endodontics
  • The purpose of this study was to determine the accuracy of cone beam computed tomography (CBCT) for the detection of vertical root fractures (VRFs) in comparison to periapical radiography (PA). Fifty premolars and molars in dry skulls were accessed, instrumented and obturated. Fracture induction of twenty-one teeth took place using the Monaghan method. Three digital PAs with angular discrepancy of approximately 15 degrees and CBCT scans of each skull submerged in water, to simulate soft tissues, were made. All teeth were extracted and stained to obtain ground truth. Eight calibrated dentists determined VRF presence on a 5-point likelihood scale. Conclusions: PAs are more accurate than the CBCT for VRF detection. The specificity, positive likelihood ratio and diagnostic odds ratio are better for PA; there is no difference in sensitivity and negative likelihood ratio. Differences between the two modalities results from a high false positive rate associated with CBCT.
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  • In Copyright
  • "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Endodontics, School of Dentistry."
  • Mol, André
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  • Chapel Hill, NC
  • Open access

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