Ivory is really only dentine and is no different from ordinary teeth. 象牙本身只是普通的牙齿,以其它的齿类没有什么不同。
N: It means the dyspasia of the dentine or the uneven squeezingly positioned teeth and the physically defect with sulci and fossae on the teeth. 护士:那是指牙齿的硬组织发育不良或牙位拥挤,排列不齐,以及牙齿站的沟窝等生理缺陷。
dentine
[ noun ]
a calcareous material harder and denser than bone that comprises the bulk of a tooth
<noun.substance>
bone (calcified tissue) surrounding the pulp cavity of a tooth
<noun.body>
Dentine \Den"tine\ (d[e^]n"t[i^]n), n. [Cf. F. dentine.] (Anat.) The dense calcified substance of which teeth are largely composed. It contains less animal matter than bone, and in the teeth of man is situated beneath the enamel.