지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2001.3
- 수록면
- 75 - 85 (11page)
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초록· 키워드
오류제보하기
This study was performed to investigate the effect of mandibular midline shift and difference of mandibular height between both sides on the electromyo- graphic(EMG) activity of the masticatory muscles on clenching or gum chewing movement. For this study, 105 patients with temporomandibular disorders(TMD) were selected and panoramic radiograph were taken. Amount and side of the midline shift and height of the mandible from antegonial notch to the top of the condylar head were measured on panoramic view. BioEMGⓡ (Bioresearch Inc., Milwaukee, USA) was used for recording of EMG activity(μV) of the anterior temporalis and the superficial masseter on clenching or gum chewing movement. EMG activity on clenching during 533msec period were measured for activity of the starting point and the one second-after activity as the early EMG and the maximum EMG, respectively. EMG activity on gum chewing movement were measured for activity of the first and the second chewing stroke. The data collected were analysed by SPSS windows program, and the results of this study were as follows :
1. Height of the mandible was 8.06㎝ on right side and 8.03㎝ on left side, and showed no difference by age, but significantly differed by sex with higher in male subjects.
2. Mean value of the midline shift was 0.1㎜ with range of 0～5㎜ on both sides. The amount and side of the midline shift did not related with height difference of the mandible and/or the EMG activity of the masticatory muscles on clenching.
3. Prevalence of higher right side and higher left side of the mandible were almost same, and the EMG activity of higher side was not higher than that of the other side.
4. In the subjects with height difference of more than 5㎜ between both sides of the mandible, the early EMG activity on clenching were differed for the anterior temporalis, but the maximum activity were differed for the superficial masseter.
5. In the subjects with height difference of more than 5㎜ between both sides of the mandible, EMG activity of the anterior temporalis of the gum chewing side was not higher than that of the other side when chewing on the side of lower height, but in the subjects with height difference of less than 5㎜, the EMG activity was higher than that of the other side.
1. Height of the mandible was 8.06㎝ on right side and 8.03㎝ on left side, and showed no difference by age, but significantly differed by sex with higher in male subjects.
2. Mean value of the midline shift was 0.1㎜ with range of 0～5㎜ on both sides. The amount and side of the midline shift did not related with height difference of the mandible and/or the EMG activity of the masticatory muscles on clenching.
3. Prevalence of higher right side and higher left side of the mandible were almost same, and the EMG activity of higher side was not higher than that of the other side.
4. In the subjects with height difference of more than 5㎜ between both sides of the mandible, the early EMG activity on clenching were differed for the anterior temporalis, but the maximum activity were differed for the superficial masseter.
5. In the subjects with height difference of more than 5㎜ between both sides of the mandible, EMG activity of the anterior temporalis of the gum chewing side was not higher than that of the other side when chewing on the side of lower height, but in the subjects with height difference of less than 5㎜, the EMG activity was higher than that of the other side.
목차
Ⅰ. 서 론
Ⅱ. 연구대상 및 연구방법
Ⅲ. 연구결과
Ⅳ. 총괄 및 고찰
Ⅴ. 결 론
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UCI(KEPA) : I410-ECN-0101-2009-515-013688874