Ma Bowen, Huang Dongzong, Xu Xinyu, Wang Yihan, Li Xiaoxing, Hu Yifan, Yang Shuzhi, Li Hongbo, Hu Min, Liu Hongchen, Jiang Hua
Dept. of Stomatology, The First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
Dept. of Stomatology, Beijing Shunyi Hospital, Beijing 101300, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2025 Jun 1;43(3):416-421. doi: 10.7518/hxkq.2025.2024370.
This study aimed to investigate the correlation between clinical symptoms and unilateral chewing habits in patients with temporomandibular disorder (TMD) accompanied by tinnitus.
A total of 285 patients diagnosed with TMD at the Department of Stomatology of the First Medical Center of Chinese People's Liberation Army General Hospital between December 2020 and May 2024 were included and divided into two groups: tinnitus group and non-tinnitus group. Analysis was conducted on the proportion of patients with unilateral chewing habits in both groups, the correlation between the side of tinnitus and the side of unilateral chewing, and the correlation of tinnitus with TMD clinical symptoms (joint clicking, joint pain, and limited mouth opening) and unilateral chewing habits. The correlation of the type of disc displacement with unilateral chewing and tinnitus was also examined.
In the tinnitus group, the proportions of patients with and without unilateral chewing habits were 90.70% (39/43) and 9.30% (4/43), respectively. In the non-tinnitus group, the proportions of patients with and without unilateral chewing habits were 76.03% (184/242) and 23.97% (58/242), respectively. The proportion of patients with unilateral chewing habits in the tinnitus group was significantly higher than in the non-tinnitus group (χ=4.613, <0.05). Correlation analysis showed a positive correlation between tinnitus and unilateral chewing habits (<0.05). In the left-sided tinnitus group, the proportion of left-sided unilateral chewers [54.55% (12/22)] was higher than that of right-sided unilateral chewers [45.45% (10/22)]. In the right-sided tinnitus group, the proportion of right-sided unilateral chewers [81.82% (9/11)] was higher than that of left-sided unilateral chewers [18.18% (2/11)]. The difference was statistically significant (χ=7.282, <0.05). A positive correlation was also found between the side of tinnitus and the side of unilateral chewing habits (<0.05). The proportion of patients with pain was significantly higher in the tinnitus group than in the non-tinnitus group (<0.05). No significant difference in the proportion of joint clicking or limited mouth opening and disc displacement (no disc displacement, unilateral disc displacement, bilateral disc displacement, reducible disc displacement, or irreducible disc displacement) was found between the tinnitus and non-tinnitus groups (>0.05).
TMD with unilateral chewing habits may be a contributing factor to unexplained tinnitus. Unexplained tinnitus is correlated with joint pain in patients with TMD.
本研究旨在探讨颞下颌关节紊乱病（TMD）伴耳鸣患者的临床症状与单侧咀嚼习惯之间的相关性。
纳入2020年12月至2024年5月在中国人民解放军总医院第一医学中心口腔科诊断为TMD的285例患者，分为耳鸣组和非耳鸣组。分析两组单侧咀嚼习惯患者的比例、耳鸣侧与单侧咀嚼侧的相关性，以及耳鸣与TMD临床症状（关节弹响、关节疼痛和张口受限）和单侧咀嚼习惯的相关性。还检查了盘移位类型与单侧咀嚼和耳鸣的相关性。
耳鸣组有单侧咀嚼习惯和无单侧咀嚼习惯的患者比例分别为90.70%（39/43）和9.30%（4/43）。非耳鸣组有单侧咀嚼习惯和无单侧咀嚼习惯的患者比例分别为76.03%（184/242）和23.97%（58/242）。耳鸣组单侧咀嚼习惯患者的比例显著高于非耳鸣组（χ=4.613，<0.05）。相关性分析显示耳鸣与单侧咀嚼习惯呈正相关（<0.05）。在左侧耳鸣组中，左侧单侧咀嚼者的比例[54.55%（12/22）]高于右侧单侧咀嚼者[45.45%（10/22）]。在右侧耳鸣组中，右侧单侧咀嚼者的比例[81.82%（9/11）]高于左侧单侧咀嚼者[18.18%（2/11）]。差异有统计学意义（χ=7.282，<0.05）。耳鸣侧与单侧咀嚼习惯侧之间也呈正相关（<0.05）。耳鸣组疼痛患者的比例显著高于非耳鸣组（<0.05）。耳鸣组与非耳鸣组在关节弹响、张口受限比例及盘移位（无盘移位、单侧盘移位、双侧盘移位、可复性盘移位或不可复性盘移位）方面未发现显著差异（>0.05）。
伴有单侧咀嚼习惯的TMD可能是不明原因耳鸣的一个促成因素。不明原因耳鸣与TMD患者的关节疼痛相关。
