Enamel is the substance that covers the anatomic crown of the tooth, is the hardest substance in the body and is somewhat translucent. It is created by cells known as ameloblasts. The enamel is the first line of protection for the tooth. It can withstand biting pressure but does not have the ability to regrow once fully formed. If there has been minor demineralization (become more porous) occurring, it can remineralize (harden) and thus stop the tooth decay process with proper nutrition and oral care.