Hello doctor, From last few days, i getting  pain in teeth. In month if February i place a crown  in my teeth no 3. but from few days i get pain on teeth no.2.Sometime  i get little headaches of right of my face.when i drink water in time of pain it gets normal. then its start paining after sometime. In my teeth no.2 like some rough coated has cover my teeth. thank you. plz recommend some tips to reduce this pain.