A ruptured breast implant is a potentially serious health concern for any affected woman. They can also cause an unaesthetic appearance to the chest. Breast implants are not foolproof and are not designed to last a lifetime. Implants are likely to fail with time and might break much sooner, due to a variety particular circumstances. There are two general types of breast implants available in the U.S. -- saline and silicone gel. Both consist of a silicone outer shell; the difference is what's inside the implants. Saline implants are filled with saline or sterile saltwater. Silicone gel breast implants are filled with silicone. Broken Breast Implants. Posted on November 4, in FAQ's. There is an urban myth that breast implants need to be changed every ten years. Not true. In fact, breast implants are guaranteed by the manufacturers for life. As a general rule, if you have breast implants and have normal mammograms, your breasts are soft, and you are not .