Saline filled breast implants are safer in event of an implant rupture, only the filled saline is released into the tissue. The empty implant can then be removed or replaced. Moreover, saline filled implants are filled with saline only after surgical placement of the implant, thus they require a smaller incision for placement. Filling during the surgery also allows the surgeon to make minor adjustments to the volume. However, these implants look less natural as compared to silicone filled implants.
Silicone gel filled implants have a more natural look and feel firmer and softer than the saline implants. Silicone gel filled implants are pre-filled and require a longer incision for implantation. Only women over 22 years of age are eligible for breast augmentation using silicone filled breast implants.