Objective:To investigate the knowledge of alveolar bone resorption among dentists

and to guide dentists and patients to establish the concept that health and prevention come first. Methods:A questionnaire survey was conducted among the dentists in hospitals at all levels in Sichuan

China

and the main contents of the questionnaire included the prevalence rate of alveolar bone resorption in patients treated by dentists

the source of the knowledge of alveolar bone resorption

and the understanding of the prevention and treatment of alveolar bone resorption. Then SPSS 20.0 was used for statistical analysis. Results:Most of the patients treated by dentists had the problem of alveolar bone absorption

most of the knowledge of alveolar bone resorption came from textbooks

with few experiments. There was a significant difference in the number of treatment and prevention methods for alveolar bone absorption between the dentists with different specialties（P < 0.05）. Conclusion:A large number of dentists lack a comprehensive understanding of the knowledge of alveolar bone resorption and do not pay enough attention to the prevention and treatment of alveolar bone resorption. It is necessary to strengthen the knowledge of alveolar bone absorption among dentists and enhance their awareness of prevention and education.