den·tin /ˈdɛntṇ/
象牙質;牙本質
den·tin /ˈdɛnˌtɪn, dɛnˈtɪn/ 名詞
牙本質
dentin
n 1: a calcareous material harder and denser than bone that
comprises the bulk of a tooth [syn: dentine]
2: bone (calcified tissue) surrounding the pulp cavity of a
tooth [syn: dentine]