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