Abstract
A computer-based system was used to record and analyse the electromyographic activity in the right and left anterior temporal, posterior temporal, and masseter muscles, as well as the displacement, in 3 planes, of an incisor point on the mandible of adults during mastication. Unilateral gum-chewing tasks were carried out by the subjects before and after addition of the interference. Although the interference invariably produced changes in either muscle activity or jaw displacement or both, no consistent association was found for the group as a whole. In some subjects, the jaw-closing patterns on the same side as the interference were narrower than before; in others the patterns widened on the contralateral side. There was a tendency for peak muscle activity to occur earlier when the interference was present, and for continuing activity in the intercuspal position to decrease. Early inhibitory pauses in muscle activity were also observed following addition of the interference. The study demonstrated the importance of monitoring several parameters at the same time, and the need to create selective alterations to the occlusion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
