The object in this study is to exam the effect of manual technic and high frequency units on face. the study target was J college students who volunteered and understood the significance in this study. 20 volunteers divided into 2 groups; 10 for manual technic group, 10 for high frequency unit group. we could get following results after each treatments. In manual technic group, earlobe to chin length and corner of mouth to earlobe length before and after the change in the level of the experimental results show a statistically significant difference (p<0.05). but Frequency Management Group, the facial dimensions did not change significantly the results. The results seen in the buccinator a lot more or masticatory muscles developed model is significantly more from the face, I found that the reduction effect was evaluated.
목차
ABSTRACT Ⅰ. 서론 1. 연구의 필요성 Ⅱ. 본론 1. 이론적 배경 2. 연구방법 3. 임상 연구 결과 Ⅲ. 결론 참고문헌