Q. Hi, I have four crowns in the front of my mouth. I can recall the injections very well! (Felt like they were going through my gum, nose and into my brain). As most of the treatment has been done previously (20 yrs ago) and just the crowns need replacing (black gum lines) would the pain be less? And would the fees be less? Also i am thinking of buying my own bleaching kit from a recommended beauty agency. Do i complete this procedure first then visit the dentist to match the new crowns to the newly coloured teeth? In your opinion what is the most natural colour for a forty year olds teeth? Sometimes too white looks unnatural (TV news readers etc) Thank you.