Mussels Can Help With Certain Tooth Pain.
From a recent Readers Digest article-
Some tooth pain develops when the hard outer enamel wears away and exposes the softer underlying dentin, which is sensitive to stimuli such as hot and cold.  Pain-fighting toothpastes and chewing gums contain minerals that can augment enamel but don't adhere long enough to permanently rebuild it.  For a solution, Chinese scientists turned to mussels, which secrete an adhesive to attach to underwater rocks, and they created a substance with similar sticky properties.  When scientists coated worn-out teeth with the mussel-like adhesive and then soaked them in a bath of minerals, the teeth rebuilt a protective layer that simulates enamel.  This discovery lead to better products for sensitive teeth.