How to put a logo on plastic surface?

How do you whiten TEMPORARY (plastic cast) teeth that have yellowed?

• This a problem I couldn't fix for someone- I'd like to see if anyone else has any methods that work. Let me clarify- Not crowns- which are basically ceramic- I'm talking about the plastic cast temporary teeth or bridge of teeth they put in until the ceramic one comes in. Like for capping teeth- The temporary teeth they make on the spot for them to use till the real caps are finished. Tried: assorted polishing tools powders and pastes, tooth whitening gel, Bleach- (made them more yellow) peroxide. This would fall under the yellowed plastic category where the yellow is not just on the surface. Limitations- teeth are in the persons mouth- non removable- but in front. Please- real solutions only. The person's stuck with these temporary teeth until he's able to pay for the caps- which could be a while..

• Answer:

  you can't.. it's a material - and it is not plastic.. whether it be acrylic or composite - tooth whitening gel will not work. polishing will get tarnish off but maybe the color of the temp. was actually a yellower shade. in that case stop wasting your time and effort. btw. dont appreciate the negative, i acutally gave you an informative answer. you don't have to be ignorant just because its not what you want to hear.