咀嚼面および咀嚼能力と咬筋筋電図の左右側の比較について

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Food platform areas, masticatory performance and electromyograms of masseter muscles, of the left and right sides, in 15 male adults were investigated. Difference between the left and right sides in these values was compared with each other. The standard of comparison was based on fluctuation over 10%. The results were as follows : 1. At intercuspal position, food platform area and activity of electromyograms were greater on one and the same side, either the right or the left side, in six of the fifteen subjects. In other three subjects, the area was greater on one side and the activity on the other side. This was regarded as an indication of relationship between food platform area and activity of electromyograms. 2. Activities of electromyograms at intercuspal positon and during natural chewing of test foods coincided on one side in five subjects, but did not coincide in other two subject. Therefore, there appears to be some relationship between the activity of electromyograms at intercuspal position and that during natural chewing of the test foods. 3. The masticatory performance during natural chewing of the test foods averaged 3.93±0.49kg. cm/g, subconscious chewing on the left side 3.85±0.94kg. cm/g, and subconscious chewing on the right side 4.05±0.82kg. cm/g. There was no relationship among them. The difference in food platform areas between the left and right sides was not directly related with the difference in the masticatory performance, during subconscious chewing, between the left and right sides.
九州歯科学会の論文
1982-08-25

咀嚼面および咀嚼能力と咬筋筋電図の左右側の比較について

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