Bruxism and temporal bone hypermobility in patients with multiple sclerosis

Cranio : the Journal of Craniomandibular Practice
David E WilliamsA R Hargens

Abstract

In this study, the authors investigated the link between jaw clenching/bruxism and temporal bone movement associated with multiple sclerosis (MS). Twenty-one subjects participated in this study (10 patients with MS and 11 controls). To quantify the change in intracranial dimension between the endocranial surfaces of the temporal bones during jaw clenching, an ultrasonic pulsed phase locked loop (PPLL) device was used. A sustained jaw clenching force of 100 lbs was used to measure the mean change in acoustic pathlength (delta L) as the measure of intracranial distance. In the control subjects the mean delta L was 0.27 mm +/- 0.24. In subjects with MS the mean delta L was 1.71 mm +/- 1.18 (p<0.001). The increase in magnitude of bi-temporal bone intracranial expansion was approximately six times greater in subjects with MS compared to controls. Therefore, jaw clenching/bruxism is associated with more marked displacement of the temporal bones and expansion of the cranial cavity in patients with MS than in control subjects.

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Citations

Dec 10, 2019·Community Dentistry and Oral Epidemiology·Nithin MancheryMatthew R Nangle
Apr 11, 2019·Arquivos de neuro-psiquiatria·Faruk Ömer Odabas, Ali Ulvi Uca
Feb 23, 2019·Sleep & Breathing = Schlaf & Atmung·Sinan Kardeş, Elif Kardeş

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