How long do I have to wear tissue expanders after my last fill?

Hi and thanks for your question.  If you're referring to tissue expanders in the setting of breast reconstruction there's no specific timeframe.  The waiting interval after the last fill usually depends upon what the surgeon is comfortable with, and any specific aspects related to the patients reconstruction and other therapies that he/she might be receiving.  I would probably wait at least 3 weeks, but in some cases might wait up to 3 months.  Good luck!

I will typically wait at least 4 weeks prior to exchanging tissue expanders for permanent implants after the last fill. This allows the skin to settle and soften as much as possible prior to the exchange and prevent any rebound skin contraction. Expanders can stay in for a much longer time, but I try not to keep them in for a prolonged amount of time (greater than 3 months) as they can be uncomfortable for some patients. 

Once the desired size of expansion is reached, I
usually have patients wait 2-3 months for things to settle prior to returning
to the OR to replace expanders with permanent implants.