non linear surface

[avrilev]

Hello everyone.
I'm about to buy a laser engraver machine.
I saw the videos and I think that it suits my needs.

However, I want to ask two questions regarding its printing ability:
Can it print on NON regular surfaces like the one in the following picture, and, can it prints on plastic?

I'm looking for a way to emboss a number and some info on the clear aligner, not on the model.

Thanks

Dr. Avri