Abstract
The aim of this study was to determine whether there are any differences in morphology
between temporomandibular joint ankylosis (TMJA) of traumatic and infective origin.
Cone beam computed tomography (CBCT) scans of 25 patients (28 joints) with TMJA of
traumatic origin (trauma group) and 15 patients (15 joints) with TMJA of infectious
origin (infection group) were included. The following morphological parameters were
evaluated on multiple sections of the CBCT scans: lateral juxta-articular bone growth,
residual condyle, residual glenoid fossa, ramus thickening, ankylotic mass fusion
line, sclerosis of the ankylosed condyle and spongiosa of the glenoid fossa, and mastoid
and glenoid fossa air cell obliteration. Lateral juxta-articular bone growth, juxta-articular
extension of fusion, and the presence of normal medial residual condyle and residual
glenoid fossa were exclusively found in post-traumatic TMJA. There were differences
in ramus thickening (82.1% in trauma vs 53.3% in infection), sclerosis of the ankylosed
condyle (100% in trauma vs 60% in infection), and sclerosis of the spongiosa of the
glenoid fossa (100% in trauma vs 46.7% in infection) between the trauma and infection
groups. Mastoid and glenoid fossa air cell obliteration was found more frequently
in the infection group (mastoid obliteration: 23.1% in infection vs 4% in trauma;
glenoid obliteration: 66.7% in infection vs 55.6% in trauma ). CBCT imaging can be
helpful in differentiating between TMJA of traumatic and infectious origin.
Keywords
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Article info
Publication history
Published online: February 03, 2023
Accepted:
January 18,
2023
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2023 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
