Q.
My dentist has just completed an implant on a lower molar. When he cemented the PFM crown in it sat too high with the point of the tooth above hitting the middle of the crown. He ground a channel in new crown so my teeth fit together well. However this has exposed a small amount of the metal in the crown. It looks like a small metal filling. I am not too bothered about the look as it is not that visible and it otherwise fits well, but is this an ok practice and is more of the porcelain likely to chip away? He has offered to take the crown out and add a bit more enamel. Should I ask for a new crown? He is our regular family dentist and I do not want to cause fiction.