植牙术可分再植、移植和种植三类。在我国的植牙史上,牙齿的即期再植,离体牙多在三小时内植入,6小时内植入者已属小见。《口腔医学》1982年第四期首次摘登离体牙20小时以上再植3例,其中再植数目最多者为二只牙,我院1982年11月17日治一例4只上前牙脱落13小时再植成活,报导如下:患者刘××,男,32岁,内蒙呼市啤酒厂工人。1982年11月16日晚9点骑自行车,不慎摔入1.5米深沟,(?)被撞脱位,当时天黑看不蓬楚,第二天上午从泥土中找到脱位牙来我科就诊。当时牙齿离体已十三个小时。检查:4只脱位牙21 12,牙面污秽,牙颈附着的牙龈组织,已被患者撕扔掉。齿 Implants can be divided into replantation, transplantation and planting three categories. In China's history of dental implants, immediate dental replantation, implanted in more teeth within three hours, implanted within 6 hours has been a subtle. “Stomatology” 1982 the fourth period for the first time picked off the teeth more than 20 hours of replantation in 3 cases, of which the largest number of replantation of two teeth, our hospital in November 17, 1982 a case of 4 cases of anterior teeth off 13 Hour replantation, reported as follows: Patient Liu × ×, male, 32 years old, Inner Mongolia Hohhot brewery workers. At 9 o'clock on the November 16, 1982 riding a bicycle, accidentally fell into the 1.5 m deep groove, (?) Was hit and dislocated, was awful at dark the next morning to find the dislocation of the teeth from the soil to our department . At that time the teeth have been thirteen hours. Check: 4 dislocated teeth 21 12, the tooth surface contamination, gums attached to the neck, the patient has been torn away. tooth