many years back, i had a terrible pain after i got exposed to the cold climate and was having a cup of coffee. when i went to the dentest, she suggested that my enamel had worn out and painted something on my teeth. it felt better for a couple of years. now i have the same pain again but am in differnet city. i dont know what that treatment name is that the original dentist gave me. can anyone identify what kind of coating that could be applied to replace the enamel?