Breast augmentation is a surgical procedure done to enlarge the breasts. A breast implant is either inserted behind the breast tissue or behind the chest muscle. There are two types of implants, one is saline (salt water) and the other is silicone gel (memory gel). The saline implant has more of a firmer feel and the silicone gel resembles more of a natural breast tissue. View the latest news and information on Breast Implants here.