Mixed colors: Sometimes you need to mix colors of tooth colored filling material to match the existing tooths color if u have a white and grey stripe on the tooth seen the dentist who did the filling to modify the restoration.
Answered 2/26/2015
4.7k views
Ask treating Dentist: Sometimes when an old silver mercury amalgam is removed the gray stain is left behind. This could give the appearance of a blended gray and white filling. The best person to resolve this with you is the dentist who you went to for your filling.
Answered 12/1/2013
4.7k views
Matching: Probably trying to best match the surrounding tooth color. We blend shades almost all the time to give you a better result.
Answered 1/31/2014
4.7k views
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