Natural course of non-reducing disc displacement of the temporomandibular joint: changes in electromyographic activity during chewing movement.
Natural course of non-reducing disc displacement of the temporomandibular joint: changes in electromyographic activity during chewing movement.
复制标题
颞下颌关节非复位盘移位的自然过程：咀嚼运动期间肌电活动的变化。
DOI：
10.1111/j.1365-2842.2004.01431.x
复制
发表时间：
2005
影响因子：
2.9
通讯作者：
H. Kawamura
中科院分区：
文献类型：
--
作者：
Shuichi Sato;H. Kawamura
本研究的目的是检验未接受任何治疗的非减少性颞下颌关节盘移位(TMJ)患者的咀嚼运动过程中的肌电活动(EMG)是否会在诊断后的后续过程中自发地变化到对照水平。在15名这样的患者中，在初次就诊时和平均21.7个月的随访中检查了肌电数据。作为对照，23名没有TMJ功能障碍的人被研究。对初次就诊患者、随访患者和对照组的肌电结果进行比较。患者的临床症状和体征在随访期内得到缓解。初诊时肌肉收缩持续时间、循环时间和积分肌电值(IEMG)与对照组比较差异有统计学意义。患者患侧咀嚼时咀嚼时的IEMG(14.2±8.0 1微伏S)大于初诊时(10.5±3.6 9微伏S)(P<0.0 5)。在患者中，随访时肌肉收缩的持续时间或周期时间与初次就诊时没有区别。TMJ间盘移位无复位者IEMG自发性升高，确诊后未予任何治疗，临床症状、体征改善。肌肉收缩的持续时间或周期时间没有改变到对照水平。研究结果可作为对照数据，用于了解特定治疗对TMJ关节盘非复位性移位患者的真实效果。
The purpose of this study is to examine whether electromyographic activity (EMG) during chewing movement changes towards the control level spontaneously in the subsequent course after diagnosis in patients with non-reducing disc displacement of the temporomandibular joint (TMJ) who do not receive any treatment. In 15 such patients, EMG data were examined at initial visit and at a mean follow-up of 21.7 months. As a control, 23 persons who had no TMJ dysfunction were studied. The results of EMG were compared among patients at initial visit, those at follow-up, and controls. The patients' clinical signs and symptoms were alleviated during the follow-up period. Duration of muscle contraction, cycle time and integrated EMG value (IEMG) at initial visit in patients were significantly different from those in the controls. In patients, IEMG for chewing-side masseter during chewing in the TMJ-affected side was greater at follow-up (14.2 +/- 8.01 microV s) than that at initial visit (10.5 +/- 3.69 microV s) (P < 0.05). In patients, duration of muscle contraction or cycle time at follow-up was not different from that at initial visit. Patients with non-reducing disc displacement of the TMJ showed spontaneous increasing of IEMG without any treatment in the subsequent course after diagnosis, coupled with improvement of clinical signs and symptoms. Duration of muscle contraction or cycle time did not change towards the control level. The results presented are useful as control data to understand the true effect of a particular treatment for patients with non-reducing disc displacement of the TMJ.
影响因子：
2.1
作者：
LUND, JP;DONGA, R;STOHLER, CS
通讯作者：
STOHLER, CS