I'm 35 and still have my baby k9 teeth. Is invisalign possible.

I'm 35 and my teeth are/were straight, the problem is that i still have my baby k9 teeth in place and they are solid. Last year one of my adult k9's just decided to grow in behind the original one. The other adult k9 is still up in my pallet. Can i get away with invisalign to pull everything down into place? How long does something like that take? Should i just have everything pulled and get implants?

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