Oww! Scientists discover the molecule in tooth cells that signals the brain when exposed to cold

There’s little as excruciating as biting into a cold ice-cream and feeling an awful jolt of pain, especially if you’ve been a bit lax in the dental hygiene department. Researchers from the US and Germany have finally gotten to the root of this pain — identifying the specific cells in teeth, odontoblasts, that sense cold temperatures. … Read more