What is the difference between the new silicone implants and the old silicone implants?
Old silicone implants had a very thin silicone shell and the silicone gel inside was almost like a thick liquid such as honey. This would allow some of the gel to bleed through the shell and into the implant pocket. This would frequently result in a hard capsular contracture as well as calcium deposits in the scar capsule itself. The newest generation of silicone implants have a more substantial shell and the inner gel is also thicker (more viscous), almost like molded gelatin. When an old implant ruptured, all of the silicone would leak out like thick oil. With the newer implants, if the shell loses its integrity, the silicone gel keeps its shape and may not even move out of the shell.