多数学者研究证明根尖囊肿占根尖病变的42～44%,而85～90%的根尖病变可通过保守治疗使病变消失,或明显好转。本文对969例根尖囊肿经根管治疗0～8月后,拔除的离体牙进行了组织学研究。显微镜所见:囊肿内面通常有厚度不同的多层鳞状上皮衬里,上皮可突入结缔组织 Most scholars have shown that apical cyst accounted for 42 ~ 44% of apical lesions, while 85 ~ 90% of apical lesions can be conservative treatment of lesions disappear, or significantly improved. In this paper, 969 cases of apical cysts after root canal treatment 0 to 8 months after removal of the isolated teeth for histological study. Microscopic view: the cyst often have a different thickness of the multilayer squamous lining, the epithelium can break into the connective tissue