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Accuracy of Three Cone Beam Computed Tomography Systems in the Detection of Implant-Abutment Misfit.
International Journal of Prosthodontics 2019 March
PURPOSE: To assess the accuracy of three cone beam computed tomography (CBCT) systems in misfit detection at the implant-abutment joint.
MATERIALS AND METHODS: A total of 32 implants were placed in dry human mandibles. Porcelain-fused-to-metal crowns, both with and without a 200-μm-thick gap at the implant-abutment joint, were placed and then scanned using three CBCT systems: Picasso Trio (PT), OP300 (OP), and Scanora 3D (SC). Images were assessed, and area under the receiver operating characteristic curve (Az) values were compared (a = .05).
RESULTS: Az values obtained with PT (0.86) were significantly higher than with OP (0.63) and SC (0.64) (P < .05).
CONCLUSION: Images acquired with PT allowed for more accurate misfit detection at the implant-abutment joint due to higher contrast resolution.
MATERIALS AND METHODS: A total of 32 implants were placed in dry human mandibles. Porcelain-fused-to-metal crowns, both with and without a 200-μm-thick gap at the implant-abutment joint, were placed and then scanned using three CBCT systems: Picasso Trio (PT), OP300 (OP), and Scanora 3D (SC). Images were assessed, and area under the receiver operating characteristic curve (Az) values were compared (a = .05).
RESULTS: Az values obtained with PT (0.86) were significantly higher than with OP (0.63) and SC (0.64) (P < .05).
CONCLUSION: Images acquired with PT allowed for more accurate misfit detection at the implant-abutment joint due to higher contrast resolution.
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