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KMID : 0386219970090020027
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Journal of Korean Academy of Craniomandibular Disorders
1997 Volume.9 No. 2 p.27 ~ p.39
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A STUDY ON THE EFFECTS OF UNILATERAL CHEWING HABIT ON THE CHEWING MOVEMENTS
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Abstract
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This study was performed to investigate the chewing movements in subjects with unilateral chewing habit. 42 patients with temporomandibular disorders and 44 dental students without any signs and symptoms of the temporomandibular disorders were selected as the patients group and the control group, respectively. BioEGN of the Biopak (BioResearch Inc. USA) was used to record chewing movements pattern as to chewing velocity, range of movements and symmetry of the path to midline. The data were analyzed by the preferred chewing side and/or the affected side by SAS/stat program.
The results obtained were as follows :
1. In control group, right side chewing subjects showed more deflected path to preferred chewing side than left side chewing subjects have done. But in patients group, there was no significant difference in chewing pattern between the two subjects.
2. In unilaterally affected patients, right side affected patients showed slight difference between the movements to both sides, but left side affected patients showed significant deflection to the affected side.
3. There were some difference in preferred chewing side movement pattern between the patients group and the control group in right chewing subjects whereas no difference was seen between the two groups in left chewing subjects.
4. There was no difference in chewing velocity and range of movements between right and left side movement in all cases compared by preferred chewing side or affected side.
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KEYWORD
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