A Great Question! Yes, there is no contraindication to getting any HA filler (such as Voluma) after receiving a PMMA filler (specially so long ago). With that said, Voluma is not my 1st choice (or second or third) for marionette lines - You want to try a filler that is injected more superficially for those lines such as Juvederm Ultra, Ultra plus or vollure. Hope this helps!