Mandible displacement is known to correlate with otological conditions such as pain in the ear canal, hearing loss, or tinnitus. The present work aimed to determine the association between the displacement of the condyle in a temporomandibular joint, the structure and position of the petrotympanic fissure (PTF), and comorbid tinnitus in patients affected by temporomandibular joint and muscle disorder (TMD). We enrolled 331 subjects with TMD (268 women and 63 men). The average age of women was 40.8 ± 16.8 years (range 13–88), whereas the average age of the examined men was 38 ± 14 years (range 13–74). We performed imaging studies of the facial part of the skull in the sagittal plane using a volumetric imaging method and a large imaging field (FOV) of 17 cm × 23 cm. The habitual position of the mandible was determined and used as a reference. Based on the imaging results, we developed a classification for the topography and the structure of the petrotympanic fissure. Thirty-three TMD patients (about 10% of the sample) reported having tinnitus. These patients had PTF configurations characterized by a rear (36.59%) or intracranial-cranial (63.41%) condylar displacement of the temporomandibular joint. Our findings imply that the TMJ- and tinnitus-positive group of patients possibly represents a distinct phenotype of tinnitus. We concluded that for such patients, the therapeutic approach for tinnitus should include TMD treatment.

中文翻译：

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应用CBCT成像对颞下颌关节疾病患者的鼓室裂隙和耳鸣的解剖特征之间的关联：一项探索性研究。

已知下颌移位与耳科疾病（例如耳道疼痛，听力下降或耳鸣）相关。目前的工作旨在确定颞下颌关节dy突移位，肩ym间裂（PTF）的结构和位置以及患有颞下颌关节和肌肉疾病（TMD）的患者合并耳鸣之间的关联。我们招募了331名患有TMD的受试者（268名女性和63名男性）。女性的平均年龄为40.8±16.8岁（范围13–88），而接受检查的男性的平均年龄为38±14岁（范围13–74）。我们使用体积成像方法和17 cm×23 cm的大成像场（FOV）对矢状面中颅骨的面部进行了成像研究。确定下颌骨的惯常位置，并将其用作参考。根据成像结果，我们对岩壁裂隙的地形和结构进行了分类。33名TMD患者（约占样本的10％）报告患有耳鸣。这些患者具有颞下颌关节后rear突（36.59％）或颅内-颅内（突（63.41％）的特征。我们的发现暗示，TMJ和耳鸣阳性患者组可能代表了耳鸣的独特表型。我们得出的结论是，对于此类患者，耳鸣的治疗方法应包括TMD治疗。59％）或颞下颌关节的intra内移位（63.41％）。我们的发现暗示，TMJ和耳鸣阳性患者组可能代表了耳鸣的独特表型。我们得出的结论是，对于此类患者，耳鸣的治疗方法应包括TMD治疗。59％）或颞下颌关节的intra内移位（63.41％）。我们的发现暗示，TMJ和耳鸣阳性患者组可能代表了耳鸣的独特表型。我们得出的结论是，对于此类患者，耳鸣的治疗方法应包括TMD治疗。