a calcareous material harder and denser than bone that comprises the bulk of a tooth
同义词：dentine
bone (calcified tissue) surrounding the pulp cavity of a tooth
同义词：dentine
dentin详细解释
den.tin n.（名词）The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.牙质，齿质：牙齿主要的钙质部分，在珐琅质下面，牙髓周围，植根于牙床的管道内 【引伸】 dentin.al
