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Imaging of masseter muscle spasms by ultrasonography: a preliminary study

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Abstract

Objectives

The aim of this study was to determine the effectiveness of ultrasonography (USG) in locating spasm points in the masseter muscle.

Methods

Fifteen patients with TMJ dysfunction and five healthy controls were included in the study. First clinical examination of TMJ and palpation of masticatory muscles were done. Then, the masseter muscles were examined by USG. A total of 40 masseter muscles were examined within the study.

Results

Spasm points were observed as limited isoechogenic areas within normal heterogeneous muscle tissue. Within the 30 masseter muscles of patients with TMJ dysfunction, a total of 14 spasm points were detected clinically and 18 spasm points were detected ultrasonographically. No clinic or sonographic spasm point was detected in the masseter muscles of healthy controls.

Conclusion

USG demonstrated in detail the internal structure of the masseter muscle in all patients and provided precise localization of the spasm points on the muscle. This is a preliminary study, showing that changes in muscle internal structure can be visualized with USG.

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Correspondence to Fatma Caglayan.

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Conflict of interest

There are no funders and no disclosure. Kader Azlag Pekince, Fatma Caglayan, and Adem Pekince declare that they have no conflict of interest.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.

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Informed consent was obtained from the patients for being included in the study.

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This article does not contain any studies with animal subjects performed by the any of the authors.

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Azlag Pekince, K., Caglayan, F. & Pekince, A. Imaging of masseter muscle spasms by ultrasonography: a preliminary study. Oral Radiol 36, 85–88 (2020). https://doi.org/10.1007/s11282-019-00383-4

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  • DOI: https://doi.org/10.1007/s11282-019-00383-4

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