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在拔牙手术中,常遇到一种并非由于拔牙手术造成的牙根折裂。其折断面为陈旧性,有时表面有肉芽组织覆盖;或在临床检查中,断根面已暴露于牙龈软组织外;只限于根部,不波及牙冠;有整齐的纵裂,也可为横断。它既不同于外伤性根折,也不同于病理性根折,与牙齿隐裂、裂缝牙综合征、不全冠——根裂,牙根裂缝综合征等也有明显区别。国内自钟大文等(1965)首先报告以来,近年有卢华芳(1980)、曹采方等(1981)提出报告并进行了分析讨论。认为这可能是一种独立疾病,有其独特的发病部位,临床
In tooth extraction surgery, often encountered a tooth root fracture is not due to extraction surgery. The broken surface is old, and sometimes the surface of granulation tissue coverage; or in clinical examination, the root has been exposed to the gums outside the soft tissue; only in the root, does not affect the crown; neat longitudinal rupture, but also for the transection. It is different from the traumatic root fracture, is also different from the pathological root fracture, and the tooth crack, crack tooth syndrome, incomplete crown - root crack, root fracture syndrome are also significantly different. Since the first report of Zhong Da Wen (1965) in China, Lu Huafang (1980) and Cao Cai Fang et al. (1981) recently reported and conducted analysis and discussion. Think this may be an independent disease, has its unique site of disease, clinical