This is an interesting biomaterials question but is clinically irrelevant from a living patient standpoint. (it is, however, very relevant if you are an undertaker or run a funeral home in regards to cremation!) The degradation temperature of a breast implant is a function of two factors; the melt temperature of its surrounding polymer shell and the heat expansion/burst temperature of the filler material. The melt temperature of the polymer shell well exceeds 270 degrees F which is well known as breast implants can be autoclaved without any change in its form. (including a deflated saline implant and an intact silicone implant) I believe it is closer to 320 degrees F but don't quote me on that exact number. The saline filler material boils at 212 degrees F and this will cause the implant to explode due to the heat expansion of the fluid. Silicone gel requires much higher temperatures which are near the shell temperatures of 320 degrees F plus. You can start to see the expansion of the silicone gel material in an autoclaved (270 degree F) implant with the creation of internal bubbles.
I would like to know why you ask this question. Both saline and silicone implants can tolerate extrem temperatures that your body can not tolerate. Do not try to find out the exact temperature.
