Quantitative ComparisonBetween: Temporalis & masseter muscles	In: Women & Men denture wearers		By: Power Spectrum Analysis of EMG parameters.

Ridha Hassan Al-Rubaie, Mohammed

	Quantitative ComparisonBetween: Temporalis & masseter muscles In: Women & Men denture wearers By: Power Spectrum Analysis of EMG parameters.
journal of kerbala university
Article 1, Volume 6, Issue 4, 2010, Pages 76-87 PDF (0 K)
Author
Mohammed Ridha Hassan Al-Rubaie
Abstract
This study accomplished by using the power spectrum analysis of EMG parameters registered by surface electrodes secured on major bulk center of anterior temporalis and masseter muscles of (12) women denture wearers and (16) men denture wearers with age range (48-58) years. The results were obtained and statistically analyzed to compare the values of amplitude and frequency parameters obtained from each subject groups during clenching in maximum intercuspation position (MIP), right lateral position (RLP) and left lateral position (LLP) and, also, during chewing (3) grams of peanuts and (5) one cubic centimeter pieces of carrot. The quantitative comparison showed that the men denture wearers registered higher amplitude values than women denture wearers , and that indicate the presence of large size motor units, in temporalis and masseter muscles of men subjects, which were responsible for the registration of the higher values by synchronization of motor unit action potentials. Whereas, the frequency parameters of the two subject groups showed no significant differences which means the number of the motor units and firing phases are almost the same. These results can be utilized in treating any problem occur in masticatory muscles by: accomplishing the needed modifications in complete and partial denture design, the choice of artificial teeth and the manner of setting them according to the more convenient concept of occlusion of complete denture.

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