INVESTIGATION OF MYOFASCIAL PAIN AND OCCLUSAL TOOTH CONTACT PATTERNS IN TMJ DYSFUNCTION PATIENTS

本研究的目的是探讨无意识咬合牙齿接触与肌筋膜疼痛的关系。按Krogh-Poulsen‘s触诊系统对135例患者进行了肌肉触诊试验。记录患者触诊时主诉疼痛或不适的肌肉。对8名受试者(4名正常人和4名TMJ功能障碍者)进行咬合牙齿接触试验。为了检查习惯咬合位置的咬合牙合接触，使用了一种带有小型发射器、电池和开关的无线电遥测系统。该开关工作在从习惯咬合位置起直径为100米的圆圈区域。只有当上下牙在习惯咬合位置接触时才出现的模拟信号被存储在盒式录像带中。然后用A/D转换器将磁带上的信号转换成数字数据，并用计算机计算出牙合接触的频率和持续时间。结果如下：1.在单侧疼痛患者中，胸锁乳突肌上、下段、颞肌附着部与翼突内肌、咬肌深部与浅部、颞肌前部与咬肌深部、胸锁乳突肌上部与翼外肌之间有统计学意义的相关性。TMJ功能障碍患者的牙齿接触频率和接触持续时间明显高于正常人。

THE PURPOSE OF THIS STUDY IS TO INVESTIGATE RELATIONSHIP BETWEEN UNCONSCIOUS OCCLUSAL TOOTH CONTACTS AND MYOFASCIAL PAIN. L35 PATIENTS WERE USED IN MUSCLE PALPATION TESTS WHICH WERE PERFORMED ACCORDING TO THE KROGH-POULSEN'S PALPATION SYSTEM. THE MUSCLES, IN WHICH THE PATIENTS COMPLAINED PAIN OR UNPLEASANTNESS WHEN PALPATED, WERE RECORDED.OTHER 8 ( 4 NORMAL AND 4 TMJ DYSFUNCTIONED ) SUBJECTS WERE USED IN OCCLUSAL TOOTH CONTACTS TEST. IN ORDER TO EXAMINE OCCLUSAL TOOTH CONTACTS IN THE HABITUAL OCCLUSAL POSITION, A RADIOTELEMETRY SYSTEM WITH A SMALL TRANSMITTER, BATTERIES AND A SWITCH WAS USED. THE SWITCH WORKS AROUND THE AREA OF CIRCLE WITH DIAMETER OF 100 M FROM THE POINT OF HABITUAL OCCLUSAL POSITION. THE ANALOGUE SIGNALS WHICH APPEAR ONLY WHEN UPPER AND LOWER TEETH TOUCH TOGETHER IN THE HABITUAL OCCLUSAL POSITION WERE STORED IN A VIDEO CASETTE TAPE. THEN THE SIGNALS ON THE TAPE WERE CONVERTED INTO DIGITAL DATA BY A A/D CONVERTER AND THE FREQUENCY AND THE DURATION OF THE OCCLUSAL TOOTH CONTACTS WERE CALCULATED WITH A PERSONAL COMPUTER. THE RESULTS WERE AS FOLLOWS:1. IN CASE WITH UNILATERAL PAINED PATIENTS, THERE WERE STATISTICALLY MEANINGFUL CORRELATION BETWEEN UPPER AND LOWER STERNOCLEIDOMASTOID MUSCLES, INSERTION OF TEMPORAL MUSCLE AND INTERNAL PTERYGOIDMUSCLE, PROFOUND AND SHALLOW PARTS OF MASSETER MUSCLES, ANTERIOR PART OF TEMPORAL MUSCLE AND PROFOUND PART OF MASSETER MUSCLE, AND UPPER PART OF STERNOCLEIDOMASTOID MUSCLE AND LATERAL PTERYGOID MUSCLE.2. THE FREQUENCY AND THE DURATION OF TOOTH CONTACTS IN TMJ DYSFUNCTIONED PATIENTS WERE REMARKABLY GREATER THAN THOSE IN THE NORMAL SUBJECTS.