Tour results indicate that the difference between enamel and dentin hardness has. nothing to do with the content of Na, Cl and Mg, but the percentage of organic and inorganic. materials in enamel and dentin. Keywords: microhardness, chemical composition, human tooth, enamel, dentin. 1. Introduction.
Medical Definition of metastatic. 1  1: of, relating to, or caused by metastasis cutaneous metastatic disease as the first sign of lung cancer metastatic carcinoma metastatic spread. 2  2: tending to metastasize metastatic cancer cells metastatic prostate cancer.
metastasis. pl. -Â·sesÂ·. 1  Rare change of form or matter; transformation. 2  Med. the spread of disease from one part of the body to another unrelated to it, as in the transfer of the cells of a malignant tumor by way of the bloodstream or lymphatics.