<P> From the first half of the twentieth century, physicians used other substances as breast implant fillers--ivory, glass balls, ground rubber, ox cartilage, Terylene wool, gutta - percha, Dicora, polyethylene chips, Ivalon (polyvinyl alcohol--formaldehyde polymer sponge), a polyethylene sac with Ivalon, polyether foam sponge (Etheron), polyethylene tape (Polystan) strips wound into a ball, polyester (polyurethane foam sponge) Silastic rubber, and teflon - silicone prostheses . </P> <P> In the mid-twentieth century, Morton I. Berson, in 1945, and Jacques Maliniac, in 1950, each performed flap - based breast augmentations by rotating the patient's chest wall tissue into the breast to increase its volume . Furthermore, throughout the 1950s and the 1960s, plastic surgeons used synthetic fillers--including silicone injections received by some 50,000 women, from which developed silicone granulomas and breast hardening that required treatment by mastectomy . In 1961, the American plastic surgeons Thomas Cronin and Frank Gerow, and the Dow Corning Corporation, developed the first silicone breast prosthesis, filled with silicone gel; in due course, the first augmentation mammoplasty was performed in 1962 using the Cronin--Gerow Implant, prosthesis model 1963 . In 1964, the French company Laboratoires Arion developed and manufactured the saline breast implant, filled with saline solution, and then introduced for use as a medical device in 1964 . </P> <P> Today, there are two types of breast implants commonly used for mammoplasty, breast reconstruction, and breast augmentation procedures: </P> <Ol> <Li> saline implant filled with sterile saline solution . </Li> <Li> silicone implant filled with viscous silicone gel . </Li> </Ol>

Where do they get the skin for breast implants