Abstract：
OBJECTIVE: Few studies investigated the influence of oral parafunctional habits during the COVID-19 pandemic. Since some studies have demonstrated that signs and symptoms of temporomandibular disorder (TMD), as well as psychological alterations, increased during the COVID-19 pandemic lockdown, the aim of this study was to investigate whether social isolation is a situation that increases the prevalence of oral parafunctional habits.
METHODS: This was an observational case-control study. An online survey with questions about TMD symptoms (Diagnostic Criteria Symptom Questionnaire) and oral parafunctional habits (Oral Behaviours Checklist [OBC]) was administered to Brazilian residents at two different times (2020 and 2021). The participants were divided according to social isolation practices into study groups (GI: 2020, n = 507; GIII: 2021, n = 282) and control groups (GII: 2020, n = 98; GIV: 2021, n = 202).
RESULTS: In each group, we evaluated the association of the frequency of oral parafunctional habits with the symptoms of TMD, and we observed that individuals with a greater presence of painful TMD present a greater number of oral parafunctional habits. Despite the literature showing that individuals who practiced social isolation developed more oral parafunctional habits, when analysing the association of the OBC questions in Groups GI × GII and GIII × GIV, only \'sustained talking\' (p = .0022) and \'hold telephone between your hand and shoulders\' (p = .0124) showed a significant difference in GI × GII. Kendall\'s coefficient of concordance revealed that there was a very strong concordance (GI × GII 0.9515 (p = .0087) and GIII × GIV 0.9655 (p = .0074)) between the ranks of the analysed oral parafunctional habits in all groups.
CONCLUSIONS: We can state that Individuals who practiced social isolation did not present more oral parafunctional habits than individuals who did not.
METHODS: This was an observational case-control study. An online survey with questions about TMD symptoms (Diagnostic Criteria Symptom Questionnaire) and oral parafunctional habits (Oral Behaviours Checklist [OBC]) was administered to Brazilian residents at two different times (2020 and 2021). The participants were divided according to social isolation practices into study groups (GI: 2020, n = 507; GIII: 2021, n = 282) and control groups (GII: 2020, n = 98; GIV: 2021, n = 202).
RESULTS: In each group, we evaluated the association of the frequency of oral parafunctional habits with the symptoms of TMD, and we observed that individuals with a greater presence of painful TMD present a greater number of oral parafunctional habits. Despite the literature showing that individuals who practiced social isolation developed more oral parafunctional habits, when analysing the association of the OBC questions in Groups GI × GII and GIII × GIV, only \'sustained talking\' (p = .0022) and \'hold telephone between your hand and shoulders\' (p = .0124) showed a significant difference in GI × GII. Kendall\'s coefficient of concordance revealed that there was a very strong concordance (GI × GII 0.9515 (p = .0087) and GIII × GIV 0.9655 (p = .0074)) between the ranks of the analysed oral parafunctional habits in all groups.
CONCLUSIONS: We can state that Individuals who practiced social isolation did not present more oral parafunctional habits than individuals who did not.
摘要：
目的：很少有研究调查COVID-19大流行期间口腔功能异常习惯的影响。由于一些研究表明颞下颌关节紊乱病（TMD）的体征和症状，以及心理上的改变，在COVID-19大流行封锁期间有所增加，这项研究的目的是调查社会隔离是否会增加口腔功能异常习惯的患病率。
方法：这是一项观察性病例对照研究。在两个不同的时间（2020年和2021年）对巴西居民进行了一项关于TMD症状（诊断标准症状问卷）和口腔功能异常习惯（口腔行为清单[OBC]）的在线调查。根据社会隔离实践将参与者分为研究组（GI：2020，n=507；GIII：2021，n=282）和对照组（GII：2020，n=98；GIV：2021，n=202）。
结果：在每组中，我们评估了口腔功能异常习惯的频率与TMD症状的相关性，我们观察到，疼痛性TMD较多的个体表现出更多的口腔功能异常习惯。尽管有文献表明，实行社会隔离的人养成了更多的口头超功能习惯，在分析GI×GII和GIII×GIV组中OBC问题的关联时，只有“持续通话”（p=.0022）和“手和肩膀之间的电话”（p=.0124）在GI×GII上有显着差异。肯德尔的一致性系数表明，在所有组中所分析的口腔副功能习惯的等级之间存在非常强的一致性（GI×GII0.9515（p=.0087）和GIII×GIV0.9655（p=.0074））。
结论：我们可以说，实行社会隔离的个体并没有表现出更多的口腔功能异常习惯。
方法：这是一项观察性病例对照研究。在两个不同的时间（2020年和2021年）对巴西居民进行了一项关于TMD症状（诊断标准症状问卷）和口腔功能异常习惯（口腔行为清单[OBC]）的在线调查。根据社会隔离实践将参与者分为研究组（GI：2020，n=507；GIII：2021，n=282）和对照组（GII：2020，n=98；GIV：2021，n=202）。
结果：在每组中，我们评估了口腔功能异常习惯的频率与TMD症状的相关性，我们观察到，疼痛性TMD较多的个体表现出更多的口腔功能异常习惯。尽管有文献表明，实行社会隔离的人养成了更多的口头超功能习惯，在分析GI×GII和GIII×GIV组中OBC问题的关联时，只有“持续通话”（p=.0022）和“手和肩膀之间的电话”（p=.0124）在GI×GII上有显着差异。肯德尔的一致性系数表明，在所有组中所分析的口腔副功能习惯的等级之间存在非常强的一致性（GI×GII0.9515（p=.0087）和GIII×GIV0.9655（p=.0074））。
结论：我们可以说，实行社会隔离的个体并没有表现出更多的口腔功能异常习惯。
