To establish the animal model of re pa rative dentinogenesis and investigate the histo-morphological feature of reparat ive dentinogenesis.

建立修复牙本的动物实验模型，观察修复牙本的组织态学。

Dentinogenesis imperfecta (DI) is a kind of mesodermal defect inherited in a simple autosomal dominant mode.

要牙本不良是一种体染色体显遗传的中胚层缺陷。