根尖周炎是指发生在牙根尖部及其周围组织,包括牙周膜、牙槽骨及牙骨质的各类疾病。老年患者由于年龄较大,罹患根尖周炎的概率增高,且常常由于身体或主观原因而拒绝拔牙,因此,根管治疗术成为治疗老年根尖周炎的主要方法。2006年9月-2008年4月,我们选择离退休老干部根尖周 Apical periodontitis refers to the various types of diseases that occur in the apical portion of the root and its surrounding tissues, including the periodontal ligament, alveolar bone and cementum. Elderly patients have a higher probability of having periapical periodontitis due to their age and often refrain from tooth extraction due to their physical or subjective reasons. Therefore, root canal therapy is the primary method of treating periapical periodontitis in the elderly. September 2006 - April 2008, we choose to retired veteran periapical week