RESUMO
OBJECTIVES: The aim of this study was to evaluate the effect of an optimization filter (OF) and voxel size on the accuracy of root fracture detection. STUDY DESIGN: Half of 40 endodontically treated roots were fractured, and the other half were left intact. All teeth were randomly placed into 5 bovine ribs. Each rib was scanned with the Planmeca ProMax 3-D using 4 different settings: 75 µm and 100 µm voxel size with and without an OF. Five reviewers reported if a fracture was present by using a 5-point scale. Intra-/interobserver agreement, area under the receiver operative characteristic curve, accuracy, sensitivity, and false-positive rates were analyzed. RESULTS: High κ-values indicated strong intra-/interobserver agreement. There was no significant difference in fracture detection between any of the evaluated techniques. CONCLUSIONS: Because of the decreased cost, dose area product, and time required, compared with the other imaging modalities studied, the high-resolution mode (100 µm) without an OF is recommended for root fracture detection in endodontically treated teeth.
