Journal article

Accuracy of orthopantomograms in the assessment of implant position following alloplastic temporomandibular joint replacement

Mustafa Mian, Sarah Fink, David Ackland, Nathan Wang, George Dimitroulis

Oral and Maxillofacial Surgery | Springer | Published : 2020

Abstract

PURPOSE The aim of this study was to determine the accuracy of orthopantomograms (OPGs) when assessing post-operative temporomandibular joint (TMJ) implant position, compared with cone beam computerized tomography (CBCT). METHODS A retrospective analysis was undertaken on six adult patients who were implanted with a custom TMJ prosthesis due to end-stage TMJ disease. Post-operative CBCT was compared with post-operative OPGs. Overall magnification of each OPG was calculated and used to linearly rescale each image. Implant position was assessed by measuring the gonion angle and the distance between each surgical screw and the mandibular gonion (SG length). RESULTS Mean magnification for OPGs w..

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