Italians live by the rule of 15: 1  Use coffee beans within 15 days of roasting. 2  Use ground coffee within 15 minutes of grinding. 3  Drink coffee within 15 seconds of brewing.
The good news is that teeth (and bones) are able to heal themselves in a process called remineralization. Basically, specialized cells in the center of the tooth are able to regenerate dentin, the layer of tooth just under the enamel, and the enamel can then properly remineralize from the outside.
No. Teeth can crack in several different ways: 1  Cracked tooth: This is when a crack runs from the biting surface of the tooth down towards the root. 2  Craze lines: These are tiny cracks that affect only the outer enamel of the tooth. 3  Cracked cusp: The cusp is the pointed part of the biting surface of the tooth.