Objective
This study compared magnetic resonance imaging (MRI) findings and fractal dimension
(FD) values in the temporomandibular joints (TMJs) of study patients with disk perforation
vs control patients.
Study Design
Of 75 TMJs examined with MRI for characteristics of the disk and condyle, 45 were
included in the study group and 30 in the control group. MRI findings and FD values
were compared for significance of differences between the groups. The frequency of
subclassifications was analyzed for differences between the two forms of disk configuration
and grades of effusion. Mean FD values were analyzed for differences among subclassifications
of MRI findings and between groups.
Results
Examination of MRI variables revealed that the study group had significantly greater
frequencies of flattened disks, disk displacement, flattening and combined defects
in condylar morphology, and grade 2 effusion (P = .001) Joints with perforated disks had a large percentage of normal disk-condyle
relationships (73.3%). Significant differences were discovered between biconcave and
flattened disk configuration in the frequencies of internal disk status and condylar
morphology. FD values of all patients varied significantly among the subclassifications
of disk configuration, internal disk status, and effusion. Mean FD values were significantly
lower in the study group with perforated disks (1.07) compared with the control group
(1.20, P = .001).
Conclusions
MRI variables and FD can be useful in investigating intra-articular TMJ status.
Abbreviations:
MRI (Magnetic resonance image), FD (Fractal dimension), TMJ (Temporomandibular joint), TMJOA (TMJ osteoarthritis), T1W1 (T1-weighted image), PDW1 (Proton density-weighted image), T2W1 (T2-weighted image), FA (Fractal analysis), PRs (panoramic radiographs), DDWR (Disk displacement with reduction), DDWOR (Disk displacement without reduction)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: January 09, 2023
Accepted:
January 1,
2023
Received in revised form:
December 23,
2022
Received:
July 29,
2022
Publication stage
In Press Journal Pre-ProofIdentification
Copyright
© 2023 Elsevier Inc. All rights reserved.
