Labels:bulletin board | earth | sky OCR: DENTIN ENTIN is a hard, vellowish inner pulp cavity Dentin is tough, material, rather like bone. but not as tough as enamel, and It m akes up most of the bulk of a has network channels running tooth lying underneath the outer through you lose some dentin, enamel lay er and surrounding the it can be replaced. unlike enamel. Channel Dentin yellowish
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