alexa A comparison of the effects of group function and canine guidance interocclusal device on masseter muscle electromyographic activity in normal subjects.


Journal of Arthritis

Author(s): Borromeo GL, Suvinen TI, Reade PC

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Abstract This study investigated the role of occlusal balance and canine guidance or group function guidance in masseter muscle function of normal subjects. Two types of interocclusal devices were constructed for each of the 10 subjects. Two ME 1020 EMG analyzers and bipolar Ag/AgCI electrodes were used to record the electromyographic activity of masseter muscles during clenching in centric occlusion, during left and right laterotrusive movements, and during clenching at the extremities of the jaw both with the natural dentition only and with adjusted and intentionally unadjusted interocclusal devices in place. This study demonstrated that there was no difference in masseter muscle electromyographic activity between the use of interocclusal devices designed for canine guidance or for group function guidance in normal subjects. It showed also that altering the occlusal balance significantly reduced muscle activity.
This article was published in J Prosthet Dent and referenced in Journal of Arthritis

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