CBCT Image Optimization to Detect Root Fractures in Endodontically Treated Teeth: An In vitro (Phantom) Study

Publication date: Available online 6 February 2017
Source:Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Author(s): Martina T. Parrone, Boulos Bechara, S. Thomas Deahl, Nikita B. Ruparel, Rujuta Katkar, Marcel Noujeim
ObjectivesEvaluate the effect of an optimization filter (OF) and voxel size on the accuracy of root fracture (RF) detection.Study DesignHalf of 40 endodontically treated roots were fractured and the other half were kept intact. All teeth were randomly placed into five bovine ribs. Each rib was scanned with the Planmeca ProMax® 3D using four different settings: 75μm and 100μm voxel size with and without OF. Five reviewers reported if a fracture was present using a five-point scale. Intra/interobserver agreement, area under the ROC curve, accuracy, sensitivity, and false positive rates (FPR) were analyzed.ResultsHigh Kappa values indicated strong intra/interobserver agreement. There was no significant difference in fracture detection between any of the evaluated techniques.ConclusionDue to the decreased cost, dose area product, and time required, when compared to the other imaging modalities studied, the High Resolution Mode (100μm) without OF is recommended for RF detection in endodontically treated teeth.



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