作者根据１２５０例异体牙及自体牙移植病例的临床观察及动物实验表明：异体牙与自体牙牙根吸收的速度开始时间基本相同，甚至自体牙及重植牙的牙根吸收较异体牙范围更大，速度更快，进一步说明了这种现象是自身免疫反应，而并非异体排斥现象。供牙经过抗原处理后仍未能减缓牙根吸收的速度及范围，甚至有些药物反而使牙根吸收速度增快，使植牙愈合缓慢。 According to the clinical observation of 1250 allogeneic teeth and autologous dental transplants and animal experiments, the authors showed that the start time of allogeneic teeth and autologous tooth root absorption is basically the same, and even the root resorption of autologous and replanted teeth is larger than that of allogeneic teeth. Faster, further illustrates this phenomenon is an autoimmune response, rather than allogeneic exclusion phenomenon. After tooth treatment, the tooth root still failed to slow down the absorption rate and range of root resorption, and even some drugs increased the root resorption rate even faster, which made the implants heal slowly.