Implant companies have warranty on the implant against rupture. You can check with implant company (if you have implant information). If not, your plastic surgeon should be able to help you with that. There will be cost for facility/anesthesia/surgeon's fee.
McGhan is now owned by Allergan. If you have information on the type and style of your implant then a call by your plastic surgeon to Allergan can determine if there is any warrantee on your implant. Off hand I do not know for sure.