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Oral Radiology
Published in: Oral Radiology 3/2021

01-07-2021 | Digital Volume Tomography | Original Article

Evaluation of styloid chain calcification related to temporomandibular joint disc displacement: a retrospective cohort study

Authors: Hatice Cansu Kış, Damla Soydan Çabuk

Published in: Oral Radiology | Issue 3/2021

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Abstract

Objectives

The present study aimed to evaluate any relationship between elongated styloid process (ESP) and temporomandibular joint disc displacement (TMJD). Study design: A retrospective cohort study. Setting: Dentomaxillofacial Radiology division of Erciyes University Dental Hospital. Participants: Ninety-four temporomandibular joints (TMJs) of 47 patients were allocated in this study. Intervention-disease: Two experienced dentomaxillofacial radiologists have interpreted all CBCT and MR images. Patients who referred with TMJ disorders were classified according to temporomandibular joint’s disc status as normal disc position (ND), displacement with reduction (DWR) and displacement without reduction (DWoR).

Methods

Main outcome measures: Interpretation of styloid chain calcification pattern and styloid processes length measured linearly on reconstructed sagittal slices of CBCT. Randomization: Cone beam computed tomography (CBCT) and magnetic resonance (MR) images of 154 patients who were admitted between September 1, 2012 and September 1, 2019. Only 47 of them fulfilled the study requirements. Blinding: Single blind of the outcome measurements and interpretations of MR images.

Results

Total 94 TMJs of 47 patients disc status groups were analyzed and defined as DWoR (n = 25), DWR (n = 32), and ND (n = 37). On multivariate analysis, no statistical significant differences were found between groups in terms of styloid process lengths. Mean SP length and standard deviation of disc status groups (DWoR, DWR, and ND) are 35.5 (± 9.8) mm, 34.6 (± 9.2) mm, and 38.3 (± 8.9) mm, respectively. When patients were grouped individually according to their post-MRI diagnosis, the mean styloid process length in the non-temporomandibular joint disc displacement (non-TMJD) patients (47.9 ± 10.8) was significantly higher than the TMJD patients (36.1 ± 9.3). In this study, there is no intervention to cause any harm or side effects.

Conclusion

Our results indicate that styloid-stylohyoid syndrome may be misdiagnosed with temporomandibular joint disorder (TMD).

Trial registration

Clinical Trials NCT04280107.
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Metadata
Title
Evaluation of styloid chain calcification related to temporomandibular joint disc displacement: a retrospective cohort study
Authors
Hatice Cansu Kış
Damla Soydan Çabuk
Publication date
01-07-2021
Publisher
Springer Singapore
Published in
Oral Radiology / Issue 3/2021
Print ISSN: 0911-6028
Electronic ISSN: 1613-9674
DOI
https://doi.org/10.1007/s11282-020-00463-w

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