Nobuhara W K, del Rio C E
Department of Endodontics, University of Texas Health Science Center, San Antonio 78284.
J Endod. 1993 Jun;19(6):315-8. doi: 10.1016/s0099-2399(06)80464-4.
Biopsy reports from 150 periradicular tissue specimens obtained from teeth refractory to nonsurgical endodontic therapy were reviewed. The specimens were submitted by postdoctoral dental students in the Department of Endodontics, and the biopsy reports were prepared by oral pathologists at the University of Texas Health Science Center at San Antonio. The study found that 59.3% of the periradicular lesions were granulomas, 22% cysts, 12% scars, and 6.7% other pathoses. The majority (56%) of endodontically treated cases which failed to heal were recognized within 2 yr after the completion of therapy. The most common location for surgical retreatment was the anterior maxilla, followed by the posterior maxilla, the posterior mandible, and the anterior mandible. The periapical granuloma was the predominant pathosis at each location.
回顾了从150例非手术根管治疗效果不佳的牙齿的根尖周组织标本中获取的活检报告。这些标本由牙髓病学系的博士后牙科学生提交，活检报告由圣安东尼奥德克萨斯大学健康科学中心的口腔病理学家编写。研究发现，59.3%的根尖周病变为肉芽肿，22%为囊肿，12%为瘢痕，6.7%为其他病变。大多数（56%）根管治疗失败且未愈合的病例在治疗完成后2年内被确诊。外科再治疗最常见的部位是上颌前部，其次是上颌后部、下颌后部和下颌前部。根尖周肉芽肿是每个部位的主要病变。
