DR. ERVIN DID SEVERAL BRIDGES ONE OF WHICH HAS A LARGE GAP BETWEEN GUMLINE AND TEETH, WHICH CAUSES SENSITIVITY TO HOT AND COLD LIQUIDS. THE TEETH ON THAT BRIDGE ARE LONGER THAN THE TEETH ON THE OTHER SIDE OF MY MOUTH. HIS SOLUTION WAS TO GRIND MY NATURAL BOTTOM TEETH FOR A BETTER FIT! WHICH HAS NOT HELPED.