If you are considering breast implants, you'll probably come across plenty of mentions of silicone and saline, the top two types of implant. You may also see mentions of polypropylene breast implants. These are also known as 'string breast implants.' This type of implant was invented by Dr. Gerald Johnson, a cosmetic surgeon, as an alternative to traditional saline and silicone implants, intended particularly for women who want extremely large breasts.
If you wish to have very large breasts, be aware that such implants are impractical as well as dangerous. This type of implant has been banned both in the United States and in the European Union due to the possibility of medical complications. String implants were originally advertised as offering an extremely lifelike feel due to their sponge-like consistency, although their design has been linked to medical issues. The material in the implants slowly absorbs water, which causes the implant to keep growing long after it is placed in the body. In addition, the polypropylene causes the surrounding tissues to become irritated, producing serum which fills the implant pocket, helping it to expand. This continual growth can only be eliminated by removing excess fluid through a syringe.
Eventually, continual breast growth will result in extreme – some would say even "cartoonish" – breast sizes. Rarely seen outside the adult entertainment industry, these types of implants have resulted in some of the largest recorded increases in breast size. Polypropylene implants, which first came onto the market in the mid- to late-1990s, were banned by the FDA by 2001. Although string implants are not generally available anywhere in the world, there have been reports of availability in some countries by unlicensed surgeons.
