Abstract: Objective: To analyze the changes in clinical diagnosis and treatment characteristics of oral emergency patients before and after online appointments in dental clinics, in order to guide the clinical grading of oral emergency diagnosis and treatment. Methods: The clinical data of 130591 first-time patients who visited the Emergency Department of Peking University Stomatological Hospital in 2019 before the implementation of online appointment and 2021 after the implementation of online appointment were reviewed and analyzed respectively. The changes in age, gender, visit time, disease type and visit time of patients in oral emergency in two years were compared through Chi-squared test. Results: The total number of first diagnosed patients in 2021 increased compared to 2019, with an increase in the proportion of elderly patients and a decrease in the number of patients in adolescents, children, and adults, all showing statistical differences. The proportion of men and women in 2021 showed no significant difference compared to 2019, while the proportion and duration of non emergency patients in 2021 increased compared to 2019, showing statistical differences. Conclusions: The popularization of online medical care has brought convenience to patients, but we still need to explore and promote a graded diagnosis and treatment system, scientifically guide patients to seek medical treatment, avoid waste of medical resources, and build a more reasonable, scientific, and more responsive oral emergency management system.

Key words: dental emergency, disease type, online medical care, retrospective analysis, epidemiology