Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, São Paulo, Brasil.
Universidade de São Paulo, Grupo de Dor Orofacial de Bauru, Bauru, São Paulo, Brasil.
J Appl Oral Sci. 2020 Mar 27;28:e20190407. doi: 10.1590/1678-2019-0407. eCollection 2020.
This study aimed to evaluate whether the presence of awake bruxism was associated with temporomandibular dysfunction symptoms, pain threshold at pressure, pain vigilance, oral health-related quality of life (OHRQoL), and anxiety and depression symptoms in patients undergoing orthodontic treatment.
This observational study followed patients who had started receiving orthodontic treatment for six months. The following variables were measured three times (at baseline, one month, and six months): pressure pain threshold (PPT) in the right and left masseter, anterior temporalis, and temporomandibular joint (TMJ), and right forearm; pain vigilance and awareness questionnaire; and shortened form of the oral health impact profile (OHIP-14). Anxiety and depression symptoms were measured using the Beck anxiety inventory and the Beck depression inventory, respectively. The patients were divided into two main groups according to the presence (n=56) and absence (n=58) of possible awake bruxism. The multi-way analysis of variance (ANOVA) was applied on the date (p=0.050).
TMJ and/or muscle pain were not observed in both groups. Time, sex, age group, and awake bruxism did not affect the PPT in the masticatory muscles and pain vigilance (p>0.050). However, the primary effect of awake bruxism was observed when anxiety (ANOVA: F=8.61, p=0.004) and depression (ANOVA: F=6.48, p=0.012) levels were higher and the OHRQoL was lower (ANOVA: F=8.61, p=0.004).
The patients with self-reported awake bruxism undergoing an orthodontic treatment did not develop TMJ/masticatory muscle pain. The self-reported awake bruxism is associated with higher anxiety and depression levels and a poorer OHRQoL in patients during the orthodontic treatment.
本研究旨在评估在接受正畸治疗的患者中，是否存在清醒磨牙症与颞下颌功能障碍症状、压力疼痛阈值、疼痛警觉、口腔健康相关生活质量（OHRQoL）以及焦虑和抑郁症状有关。
本观察性研究随访了接受正畸治疗 6 个月的患者。在基线、1 个月和 6 个月时测量了以下变量：右侧和左侧咬肌、前颞肌和颞下颌关节（TMJ）以及右侧前臂的压力疼痛阈值（PPT）；疼痛警觉和意识问卷；以及简化口腔健康影响量表（OHIP-14）。使用贝克焦虑量表和贝克抑郁量表分别测量焦虑和抑郁症状。根据是否存在（n=56）和不存在（n=58）可能的清醒磨牙症，将患者分为两个主要组。使用多因素方差分析（ANOVA）（p=0.050）对数据进行分析。
两组均未观察到 TMJ 和/或肌肉疼痛。时间、性别、年龄组和清醒磨牙症并不影响咀嚼肌的 PPT 和疼痛警觉（p>0.050）。然而，当焦虑（ANOVA：F=8.61，p=0.004）和抑郁（ANOVA：F=6.48，p=0.012）水平升高以及 OHRQoL 降低时，观察到清醒磨牙症的主要影响（ANOVA：F=8.61，p=0.004）。
自我报告有清醒磨牙症的接受正畸治疗的患者并未出现 TMJ/咀嚼肌疼痛。自我报告的清醒磨牙症与正畸治疗期间患者的焦虑和抑郁水平升高以及口腔健康相关生活质量较差有关。
