Abstract

Objective: Temporomandibular disorder (TMD) is multifactorial in nature and hence one of the most challenging diseases of modern society. The lateral pterygoid muscle (LPM) has been implicated in TMD, i.e. it may become hyperactive, eventually leading to anterior and medial disc displacement. It has been hypothesized that the hyperactivity of LPM can cause asymmetry of the lateral pterygoid plate (LPP). Hence, the present study was undertaken to evaluate a potential relationship between LPP measurements and Internal Derangements of temporomandibular joint (TMJ), using cone-beam computed tomography (CBCT).

Materials and Methods: CBCT images of 20 patients with Internal Derangement of TMJ were evaluated and compared with images of 20 age- and gender-matched controls, without any TMJ disorders. The length of LPP was measured in the axial view of the full skull CBCT images.

Results: The LPP measurements in patients from the study group were increased compared to the control group. Further, in females, the mean LPP length on left side was significantly increased in the study group compared to the control group.

Conclusion: From the results of the present study, we can suggest that evaluating the LPP asymmetry in TMD patients using CBCT could be useful for its diagnosis. However, further studies with larger sample size are recommended in this direction.

Keywords: Temporomandibular Disorders; TMD; Lateral Pterygoid Muscle; Lateral Pterygoid Plate; CBCT

References

1. Okeson JP. “Management of temporomandibular disorders and occlusion”. 6^th St Louis: Mosby; (2008): 164.
2. Rawlani SB., et al. “Evaluation of Thickness of Lateral Pterygoid Muscle by Magnetic Resonance Imaging in Patients with Internal Derangement of Temporomandibular Joint”. Mahatma Gandhi Institute of Medical Sciences 18 (2013): 33-39.
3. Murray GM., et al. “The human lateral pterygoid muscle”. Archives of Oral Biology4 (2007): 377-380.
4. Murray GM., et al. “The human lateral pterygoid muscle: a review of some experimental aspects and possible clinical relevance”. Australian Dental Journal1 (2004): 2-8.
5. Guerrero ME., et al. “Can pterygoid plate asymmetry be linked to temporomandibular joint disorders?” Imaging Science in Dentistry2 (2015): 89-94.
6. Osborn AG. “Radiology of the pterygoid plates and pterygopalatine fossa”. American Journal of Roentgenology3 (1979): 389-394.
7. Miracle AC and Mukherji SK. “Conebeam CT of the head and neck, part 2: clinical applications”. American Journal of Neuroradiology7 (2009): 1285-1292.
8. International RDC-TMD Consortium. Buffalo, USA (2015).
9. Kamble V and Mitra K. “Lateral pterygoid muscle attachment type is related to the pathogenesis of anterior disc displacement, disc degeneration and articular surface degeneration- A magnetic resonance imaging assessment”. International Journal of Biomedical Research7 (2016): 423-429.
10. Peterson LJ and Naidoo LC. “Lateral pterygoid muscle and its relationship to the meniscus of the temporomandibular joint”. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology1 (1996): 4-9.
11. Ueki K., et al. “Determining the anatomy of the descending palatine artery and pterygoid plates with computed tomography in Class III patients”. Journal of Cranio-Maxillofacial Surgery8 (2009): 469-473.

Citation

Citation: Swati P and Sushmini Hegde. "Assessment of Pterygoid Plate Measurements in Internal Derangements of Temporomandibular Joint (TMJ) - A Cone Beam Computed Tomography (CBCT) Study". Acta Scientific Dental Sciences 4.11 (2020): 120-124.

Copyright

Copyright: © 2020 Swati P and Sushmini Hegde. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.