回顾分析1974～1989年莫斯科三所医院治疗的1576例龋齿、牙髓炎和尖周炎的病历资料,龋洞用汞合金充填以后,发生牙髓炎的高峰期为4～6年,用其它材料充填的龋洞,发生牙髓炎的高峰期为2～4年。龋洞用汞合金充填者,发生尖周炎的高峰期为6年,用其它材料充填者为3～4年。牙髓炎或尖周炎,施行根管治疗以后,拔牙的高峰期为3～4年。龋齿治疗越早,牙 A retrospective analysis of 1576 cases of dental caries, pulpitis and periapicalis treated in three hospitals in Moscow from 1974 to 1989 was conducted. The peak of pulpitis occurred 4 to 6 years after cavities were filled with amalgam, Material filling cavities, the peak of occurrence of pulpitis for 2 to 4 years. Carious holes filled with amalgam, the occurrence of periapical peak is 6 years, filled with other materials for 3 to 4 years. Pulpitis or periapical inflammation, the implementation of root canal therapy, the peak of tooth extraction for 3 to 4 years. Dental caries treatment earlier, teeth