Abstract
ObjectiveTo compare the effects of dynamic and static jaw exercises on maximum mouth opening distance (MMOD) in irradiated head and neck cancer patients. Materials and methodsForty-three head and neck cancer patients who received radiotherapy were divided into two groups, dynamic jaw exercise group (n=20) or static jaw exercise group (n=23). The MMOD of the patients in each group, measured by Therabite range of motion scale, revealed excellent validity and reliability pre-radiotherapy, every two weeks during radiotherapy, the last day of radiotherapy, and the 1, 3, 6 and 12 months after treatment. The percentage of MMOD change in the groups pre-treatment and 1year post-treatment were compared using the independent t-test (α=0.05). ResultThe average reduction in MMOD in the static group was 7.17%±21.34, and in the dynamic group was 9.42%±16.91. The independent t-test analysis revealed no significant difference between the groups (p=0.706). ConclusionThere was no significant difference in MMOD between head and neck radiotherapy patients using dynamic or static jaw exercises.
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