To turn on the AutoRecover feature: 1  In Word 2010, from the menu, select 2  . In the window that opens, click the tab, icon, or list item. 3  If it is unchecked, check , and type a value next to minutes. 4  Click to make the change.
What is tooth enamel? Tooth enamel is a hard substance found in the shell of each of your teeth and is the part of the tooth thatâs visible when you look in your mouth. Enamel is considered the hardest substance in the human body. Itâs even harder than your bones; however, it can dissolve or decay when exposed to acid and a build-up of bacteria.
The crown is the part of the tooth you can see above the gums, but there is a lot more to your teeth. The tooth is made up of five parts. The enamel is the white covering on the top. It is the hardest substance in your whole body. The layer under the enamel that you can't see is the dentin.