The only reason to replace your implants would be if you had a problem with them or you wanted a different size. Potential problems might include a capsular contracture, leakage or possible change of the overlying envelope of breast tissue muscle and skin. It is difficult to assign a specific leakage rate to each individual implant. Textured implants have a slightly higher incidence of leakage than smooth implants. Each manufacturer has a variety of different shapes and sizes. Some are filled with saline and some with silicone gel. Each implant probably has a different leakage rate. The best way to think about it is that in the first 10 years they probably won’t leak, in the second 10 years they might leak, and in the third 10 years they probably will leak.