• 作者： 蕭裕源; 關學婉
• 作者服務機構： 國立台灣大學醫學院牙醫學系
• 中文摘要： 本報告以臺大醫院牙科門診210名顎肌症患者為對象，進行臨床症狀之統計與分析。結果發現該症之男女息者人數比為1比2.4，女多男少，而彼等之平均年齡為男30.7歲，女28.3歲。疼痛為最主要之主訴，佔全體之55.0%，幾為機能障礙主訴之二倍。檢查時，疼痛發生之部位以外翼肌為最多（佔男息者之49.2%，女患者之42.3%），而發生於關節之壓痛僅佔20%左右。關節噪音甚常見，尤以單響噪音為然，半數以上之患者（男性之52.5%，女性之54.4%）可於檢查時發現。夜間磨牙之比例亦甚高，男性之29.5%及女性之24.8%經證明有過此經驗。男之29.5%及女之47.6%常患頭痛，部位以顳部最多。平均開口程度小於40mm。 口腔內牙齒之咬合現象為： 1. 安格氏咬合分類上，並不與正常人有所特異。 2. 深咬之比例甚高。 3. 斯畢氏弧之呈形曲度過分者甚為普遍，也有反弧形或不規則之弧型。 4. 缺牙情形並不嚴重。 5. 自中心咬合滑行之情形甚普遍，大部分有垂直方向之滑行。 6. 犬齒導引之比例甚高，而平衡側接觸之機會大於正常人者。
• 英文摘要： This clinical observation was based on210 patients suffered from pain and functionaldisturbance at TM joint and masticatory mu-scles in Dental Department of National TaiwanUniversity Hospital. It was found that thepatients had a ratio of 2.4 women to every 1man and their mean ages were 30.7 years inman and 28.3 years in woman. Pain was themain chief complaint comprised twice asmuch as functional disorders. Pain occuredmost often at lateral pterygoid muscles (49.2of male patients and 42.3% of femalepatients). Tenderness at joint area comprisedonly around 20%. Clicking noise of the jointwas quite common (52.5% in man and 54.4%in woman) while crepitation was far lessfrequent (18.0% in man and 15.5% in wo-man). 36.1% male patients and 24.8% femalepatients reported bruxism, and 29.5% of manand 47.6% of woman suffered from headachefairly frequently. The average opening abilitywas below 40mm. The occlusion status of the patients issummarized as followings： 1. Angle's classification of molar relation of the patients did not quite different from that of normals. 2. Higher incidence of deep bite in patients. 3. Exaggerated curve of Spee could be seen. 4. Incidence of missing teeth was not high. 5. Slide in centric was quite common and mostly with vertical component. 6.Incidence of canine guidance was high and contact at balancing side was more frequently than normals.
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