Hi Sarang456,In my long term practice in Rhinoplasty using silicone implant, I have only seen one case of real silicone rejection and that silicone had long been obsolete (no longer commercially available). Other so-called rejection is mostly caused by infection caused by a pin-point perforation on the implant which is usually not visible in the surgeon's eye, but can actually invite infection, and can mask as silicone rejection. To address your concern however, normally, if there is no infection, the silicone can me removed and replaced by either goretex or cartilage (usually rib cartilage for the bridge). If there is an infection, I usually recommend patients to wait for at least 3 months.