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CRANIO®
The Journal of Craniomandibular & Sleep Practice
Volume 37, 2019 - Issue 6
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Craniofacial Pain

Assessment of association between muscular diagnosis in temporomandibular disorders with mandibular kinematics

, DDSORCID Icon, , DDS, MSc, , MSc & , DDS, MSc, PhDORCID Icon
Pages 365-373 | Published online: 07 May 2018
 

Abstract

Objective: To study the association between mandibular kinematics and muscular diagnoses in temporomandibular disorders (TMD).

Method: Retrospective, descriptive clinical study based on an analysis of 370 clinical records of muscle diagnoses in TMD. Statistical analysis was performed with the SPSS program.

Results: Five different muscle diagnoses were considered. Myospasm and centrally mediated myalgia were discarded from the statistical analysis because of their low incidences. The diagnoses included in the analysis were protective co-contraction, myofascial pain, and myalgia. Decreased mandibular kinematics in the frontal and horizontal planes were related to myofascial pain. Mandibular kinematics with deflection in opening values decreased in the frontal plane, but intermediate or increased values in the horizontal plane were related to the protective co-contraction. Muscle pain with normal or increased mandibular kinematics was associated with a diagnosis of myalgia.

Conclusion: Values of mandibular kinematics are correlated with the muscular diagnoses in TMD and are useful for diagnosis.

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