Root fracture with single fracture line can often healed after simple treatment,while root fracture with mult-fracure lines was often extracted.

• 临床常见牙齿创伤导致根折,单一折裂线的病人经保守治疗后多能愈合,而伴有多个折裂线的复杂根折病人如果处理不当,常导致失牙。