Supraglottic airway devices are commonly used to manage the airway during general anaesthesia. There are sporadic case reports of temporomandibular joint dysfunction and dislocation following supraglottic airway device use. We conducted a prospective observational study of adult patients undergoing elective surgery where a supraglottic airway device was used as the primary airway device. Pre-operatively, all participants were asked to complete a questionnaire involving 12 points adapted from the Temporomandibular Joint Scale and the Liverpool Oral Rehabilitation Questionnaire. Objective measurements included inter-incisor distance as well as forward and lateral jaw movements. The primary outcome was the inter-incisor distance, an accepted measure of temporomandibular joint mobility. Both the questionnaire and measurements were repeated in the postoperative period and we analysed data from 130 participants. Mean (SD) inter-incisor distance in the pre- and postoperative period was 46.5 (7.2) mm and 46.3 (7.5) mm, respectively (p = 0.521) with a difference (95%CI) of 0.2 (−0.5 to 0.9) mm. Mean (SD) forward jaw movement in the pre- and postoperative period was 3.6 (2.4) mm and 3.9 (2.4) mm, respectively (p = 0.018). Mean (SD) lateral jaw movement to the right in the pre- and postoperative period was 8.9 (4.1) mm and 9.1 (4.0) mm, respectively (p = 0.314). Mean (SD) lateral jaw movement to the left in the pre- and postoperative period was 8.8 (4.0) mm and 9.3 (3.6) mm, respectively (p = 0.008). The number of patients who reported jaw clicks or pops before opening their mouth as wide as possible was 28 (21.5%) vs. 12 (9.2%) in the pre- and postoperative period, respectively (p < 0.001) with a difference (95%CI) of 12.3% (6.7–17.9%). There was no significant difference in the responses to the other 11 questions or in the number of patients who reported pain in the temporomandibular joint area postoperatively. No clinically significant dysfunction of the temporomandibular joint following the use of supraglottic airway devices in the postoperative period was identified by either patient questionnaires or objective measurements.

中文翻译：

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全身麻醉期间使用声门上气道装置后颞下颌关节功能障碍：一项前瞻性观察研究

声门上气道装置通常用于全身麻醉期间的气道管理。有零星病例报告使用声门上气道装置后出现颞下颌关节功能障碍和脱位。我们对接受择期手术的成年患者进行了前瞻性观察研究，其中使用声门上气道装置作为主要气道装置。术前，所有参与者都被要求完成一份涉及 12 分的问卷，该问卷改编自颞下颌关节量表和利物浦口腔康复问卷。客观测量包括切牙间距离以及前后颌运动。主要结果是切牙间距离，这是一种公认​​的颞下颌关节活动度指标。在术后期间重复问卷和测量，我们分析了 130 名参与者的数据。术前和术后平均 (SD) 切牙间距离分别为 46.5 (7.2) 毫米和 46.3 (7.5) 毫米 (p = 0.521)，差异 (95% CI) 为 0.2 (-0.5 至 0.9)毫米。术前和术后期间的平均 (SD) 前颌移动分别为 3.6 (2.4) 毫米和 3.9 (2.4) 毫米 (p = 0.018)。在术前和术后期间，平均 (SD) 侧颌向右移动分别为 8.9 (4.1) 毫米和 9.1 (4.0) 毫米（p = 0.314）。在术前和术后期间，平均 (SD) 侧颌向左移动分别为 8.8 (4.0) 毫米和 9.3 (3.6) 毫米（p = 0.008）。在尽可能张大嘴之前报告下巴咔哒声或砰砰声的患者人数分别为 28 (21.5%) 和 12 (9. 2%) 分别在术前和术后 (p < 0.001)，差异 (95% CI) 为 12.3% (6.7–17.9%)。对其他 11 个问题的回答或术后报告颞下颌关节区疼痛的患者数量没有显着差异。通过患者问卷调查或客观测量，没有发现术后使用声门上气道装置后颞下颌关节出现临床上显着的功能障碍。