De Smit A
Rev Belge Med Dent. 1980 Nov;35(4):141-4.
These tooth abnormalities can be classified into four major groups, depending on the depth of the invagination. A typical example from group four is described. Thorough röntgenological examination reveals a frequent occurrence. The great diversity in nomenclature and the variety of morphogenetic and etiological theories show that genetic factors are very important in the development of an invaginated tooth and that knowledge concerning the patho-mechanism is very inadequate.
根据内陷深度，这些牙齿异常可分为四大类。描述了第四组中的一个典型例子。全面的X线检查显示其经常出现。命名的巨大多样性以及形态发生和病因学理论的多样性表明，遗传因素在陷入性牙齿的发育中非常重要，并且关于发病机制的知识非常不足。
