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.
Back to top. A metastatic, or secondary, brain tumor is one that begins as cancer in another part of the body. Some of the cancer cells may be carried to the brain by the blood or lymphatic fluid, or may spread from adjacent tissue. The site where the cancerous cells originated is referred to as the primary cancer.