Correlation Between the Masticatory Muscle Dimensions and Internal Derangement of Temporomandibular Joints Based on Magnetic Resonance Imaging

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Ghadimi Niloofar; MEHRALIZADEH SANDRA; RAHIMIAN ELHAM; HAFEZI LADAN; Talaeipour Ahmad Reza

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Journal: Iranian Journal of Radiology Year:2023 | Volume:20 | Issue:1 Page(s): 0-0

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Title

Correlation Between the Masticatory Muscle Dimensions and Internal Derangement of Temporomandibular Joints Based on Magnetic Resonance Imaging

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Keywords

Magnetic Resonance Imaging

Temporomandibular Joint

Temporomandibular Joint Disorders

Internal Derangement

Masticatory Muscles

Abstract

Background: Temporomandibular Joint disorders (TMDs) are the most common cause of non-odontogenic pain in the maxillofacial region. Internal Derangement (ID) is one of the most prevalent causes of TMDs, and disc displacement is recognized as the most common ID. The Masticatory Muscles are among anatomical structures involved in TMDs that may be aﬀ, ected by ID. Objectives: This study aimed to evaluate the correlation between the masticatory muscle dimensions and ID of Temporomandibular Joints using Magnetic Resonance Imaging (MRI). Patients and Methods: This cross-sectional study was conducted on the MRI images of 145 patients, retrieved from the archives of the MRI diagnostic and research center during 2020-2021. The patients were categorized into three main groups of normal disc position (NP) (n = 42), disc displacement with reduction (DDR) (n = 54), and disc displacement without reduction (DDWR) (n = 49). The maximum width and height of the masseter and medial pterygoid muscles and the maximum height and length of the superior and inferior heads of the lateral pterygoid muscle were measured on MRI images for each of the groups. Data were analyzed using t-test, Pearson’, s correlation test, ANOVA test, and Tukey’, s test (alpha < 0. 05). Results: Signiﬁ, cant diﬀ, erences were observed between the NP, DDR, and DDWR groups regarding the height (P < 0. 001) and length (P < 0. 001) of the superior head of the lateral pterygoid muscle,both parameters were signiﬁ, cantly higher in the NP group, followed by the DDR and DDWR groups (P < 0. 05). The dimensions of Masticatory Muscles were signiﬁ, cantly greater in males than females (P < 0. 05), except for the width of the medial pterygoid muscle (P = 0. 064). The height of the masseter muscle (r = 0. 190, P = 0. 022) and the medial pterygoid muscle (r = 0. 166, P = 0. 046) was signiﬁ, cantly correlated with age. Conclusion: Signiﬁ, cant correlations were found between the height and length of the superior head of the lateral pterygoid muscle and ID of TMJ,the corresponding values were lower in the DDWR group compared to the DDR and NP groups, respectively.

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APA: Copy

Ghadimi, Niloofar, MEHRALIZADEH, SANDRA, RAHIMIAN, ELHAM, HAFEZI, LADAN, & Talaeipour, Ahmad Reza. (2023). Correlation Between the Masticatory Muscle Dimensions and Internal Derangement of Temporomandibular Joints Based on Magnetic Resonance Imaging. IRANIAN JOURNAL OF RADIOLOGY, 20(1), 0-0. SID. https://sid.ir/paper/1145650/en

Vancouver: Copy

Ghadimi Niloofar, MEHRALIZADEH SANDRA, RAHIMIAN ELHAM, HAFEZI LADAN, Talaeipour Ahmad Reza. Correlation Between the Masticatory Muscle Dimensions and Internal Derangement of Temporomandibular Joints Based on Magnetic Resonance Imaging. IRANIAN JOURNAL OF RADIOLOGY[Internet]. 2023;20(1):0-0. Available from: https://sid.ir/paper/1145650/en

IEEE: Copy

Niloofar Ghadimi, SANDRA MEHRALIZADEH, ELHAM RAHIMIAN, LADAN HAFEZI, and Ahmad Reza Talaeipour, “Correlation Between the Masticatory Muscle Dimensions and Internal Derangement of Temporomandibular Joints Based on Magnetic Resonance Imaging,” IRANIAN JOURNAL OF RADIOLOGY, vol. 20, no. 1, pp. 0–0, 2023, [Online]. Available: https://sid.ir/paper/1145650/en

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