评估2019冠状病毒病（COVID-19）爆发阶段（2020年春节）对口腔急诊服务的影响。上海交通大学医学院附属第九人民医院春节期间口腔急诊病例收集2020年COVID-19疫情爆发后的数据，并与2018年和2019年进行比较。收集并分析电子病历，包括就诊科室、年龄、性别、时间、日期、地区和诊断。结果采用Pearson卡方检验和单因素方差分析（ANOVA）进行统计分析。与2018年和2019年相比，2020年春节期间患者总数有所减少（p<<0.001），但到口腔外科和口腔、头颈肿瘤急诊科就诊的患者比例有所增加。患者平均年龄增加，夜间就诊次数减少。涉及牙髓、牙周病的牙痛疾病比例上升，颌面部外伤比例下降。多年来，诊断与性别之间并不存在线性关联（P > 0.001）。然而，观察到年龄组和年份、就诊科室和年份之间存在线性关联（P < 0.001）。研究表明，COVID-19 的传播影响了患者群体以及疾病类型和口腔服务的结构。 2020年春节期间，与前两年相比。口腔急诊就诊次数和儿童青少年患者比例减少；与此同时，在 COVID-19 爆发期间，老年人口的比例有所增加。年龄组和访问分区的明显趋势可以作为反映 COVID-19 大流行严重程度的标志。这些结果可以为参与口腔急诊服务的牙科医生以及分配有限的紧急卫生资源提供参考。© 2023。作者。

To assess the impact of coronavirus disease-2019 (COVID-19) in its outbreak stage (Spring Festival in 2020) on oral emergency services.Oral emergency cases in Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, during the Spring Festival after the outbreak of the COVID-19 epidemic in 2020 were collected and compared with those in 2018 and 2019. Electronic medical records including the visited department, age, sex, time, date, region, and diagnosis were collected and analyzed. The results were statistically analyzed using Pearson's Chi-square test and one-way analysis of variance (ANOVA).Compared with that in 2018 and 2019, the total number of patients decreased during the Spring Festival in 2020 (p < 0.001), but the proportions of patients visiting Oral Surgery and Oral, Head, and Neck Oncology Emergency departments increased. The average age of patients increased, and the number of night visits decreased. Toothache diseases involving endodontic and periodontal diseases increased, while the proportion of maxillofacial trauma decreased. The wasn't a linear association between diagnosis or genders (P > 0.001) across years. However, a linear-by-linear association between age groups and years, visited departments and years were observed (P < 0.001).The study revealed that the transmission of COVID-19 affected the patient population and structure of disease types and oral services in 2020 during the Spring Festival, compared with those in the previous two years. The visits to oral emergency departments and the proportions of patients who were children and adolescents reduced; meanwhile, the percentage of the elderly people increased during the outbreak of COVID-19. The clear trend of age groups and visiting divisions could be used as a marker to reflect the severity of the COVID-19 pandemic. These results may serve as a reference for dental practitioners involved in oral emergency services and to allocate the limited emergency health resources.© 2023. The Author(s).