Researchers elsewhere have also shown that dentin and other tooth tissues experience some natural regeneration after injury, which, too, suggests the presence of progenitor cells capable of generating a variety of tooth tissues.

• 其他研究人员也已经指出，牙本质与其他牙齿组织受伤后，会出现某种程度的再生能力，这同样暗示，可能有一些前驱细胞存在，可以产生各种牙组织。