I have printed parts for a dental lab which also needed to be autoclavalble.
For this I used the Innofil PRO1 filament.
This is available in three different colors, but I would suggest you use the ‘while’ color which is actually more like a pearl-white. This seems to give the nicest results.
After printing you can anneal the print in an oven at 80 degrees Celsius after which it is temperature resistant up to 140 degrees C.