口腔是一个多细菌的环境,细菌的共生、协同作用对口腔疾病的发生发展产生明显影响。其中牙髓病、根尖周病、牙周病以及牙周牙髓联合病变的发生发展都少不了细菌的作用。在这些病理状态下,患牙根管内细菌的定植状态对疾病发展及预后都将产生重要影响,本文就不同感染状态下根管内细菌定植状态作一综述。 Oral cavity is a multi-bacterial environment, bacterial symbiosis, synergistic effect on the occurrence and development of oral diseases have a significant impact. One of the endodontics, periapical disease, periodontal disease and periodontal pulp combined with the occurrence of the development of pathogenesis are indispensable to the role of bacteria. In these pathological conditions, colonization of bacteria in the root canal will have a significant impact on the development and prognosis of the disease. In this paper, the status of bacterial colonization in root canal under different infection status is reviewed.