Effects of Parkinson's disease on molar bite force, electromyographic activity and muscle thickness of the masseter, temporal and sternocleidomastoid muscles: A case-control study.

Background: Parkinson's disease is a neurological disorder that promotes motor changes in the body.

Objective: The aim of this study was to investigate the impairment of the stomatognathic function regarding molar bite force, electromyographic activity and thickness of the craniocervical muscles in patients with Parkinson's disease in comparison with those in asymptomatic controls.

Methods: Twenty-four subjects were divided into two groups, a Parkinson's disease group (n = 12) and a control group (n = 12).