EMG Power Spectral Analysis of Jaw-Closing Muscles in Patients with Mandibular Prognathism. Comparison of Jaw Functions Before and After Orthognathic Surgery.:Comparison of Jaw Functions Before and After Orthographic Surgery
スポンサーリンク
概要
- 論文の詳細を見る
This study was conducted to compare pre-and post-surgical (mean 7.7 months) jaw functions in 18 patients (8 males and 10 females, mean age 23.1 years) with mandibular prognathism who underwent orthognathic surgery. Ten subjects (5 males and 5 females, mean age 26.1 years) were used as controls.<BR>EMG power spectra and integrations of jaw-closing muscles (anterior temporal and masseter muscles) were analyzed during 10 tapping strokes and during 60 seconds of continuous maximum clenching in an intercuspal position.<BR>1. Tapping<BR>The integrations of EMG in temporal and masseter muscles were increased after orthognathic surgery as compared with those before surgery, but no significant differences were found.<BR>The integrations of EMG in the patients before and after orthognathic surgery were both significantly lower as compared with the controls.<BR>The median power frequencies (MPF) were lower, though not significantly, after orthognathic surgery as compared with those before surgery.<BR>2. Continuous maximum clenching<BR>The integrations of EMG in temporal and masseter muscles were increased after orthognathic surgery as compared with those before surgery, but no significant differences were found.<BR>The integrations of EMG before and after orthognathic surgery were both significantly lower in the patients as compared with the controls.<BR>MPF were lower after orthognathic surgery than before, but significant differences were not found.<BR>The EMG power spectral and integration analyses during muscle fatigue were very useful to evaluate the stomatognathic function in mandibular prognathism.<BR>The results of this study suggested the necessity of carrying out long-term observation for the evaluation of the function corrected by orthognathic surgery.
- 特定非営利活動法人 日本顎変形症学会の論文
特定非営利活動法人 日本顎変形症学会 | 論文
- 水平骨切りによるオトガイ形成術後の骨吸収に関する検討
- Analysis of Patient Questions Collected for the Establishment of Clinical Guidelines for the Treatment of Jaw Deformities
- Study of Osteo-/Chondropenia Caused by Impaired Chemokine Receptor and for Progressive/ Idiopathic Condylar Resorption
- A Case of Cleft Lip and Palate with Velopharyngeal Incompetence Treated by Maxillary Distraction Osteogenesis
- Applicability of Multiple Linear Regression Analysis to the Analysis of Three-dimensional Changes in Perioral Soft Tissue Following Mandibular Setback Surgery