Accuracy of Three Cone Beam Computed Tomography Systems in the Detection of Implant-Abutment Misfit
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.
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