I had three veneers and one crown fitted on my front upper teeth. The dentist cut my gums because they were too low and I paid a lot for these veneers. Anyway, I'm not happy about the way they look. They are far too white compared to my other teeth and I have small holes between the gum and veneer on the front left and right. I;m not usually the one to complain but is there anything I can do about this?