silicons duration
If you are not experiencing any pain or having problems, I would not recommend replacing your implants.Best of luck,
If you are experiencing no problems with them and they are as they have always been, then leave them alone. It would be unnecessary surgery that could create a problem that wasn't there in the first place. If in doubt, a scan can always confirm if the implants are intact or not. If they are ruptured, then there is appropriate justification for surgery. Even then, it is not an emergency and the procedure can be planned to suit your schedule.