My silicone breast prosthesies accumulate air when I fly. Eventually they rupture.Wouldn't silicone implants do the same?(photo)

Because yours is a common concern and frequently recurring question, the effects on breast implants by pressure change in an aircraft or while Scuba diving has been researched.  Here is a
research study by a group at Duke University: Vann RD; Riefkohl R; Georgiade GS; Georgiade NG. Mammary
implants, diving, and altitude exposure. Plastic and Reconstructive Surgery,
1988. Feb. Volume 81, (2): 200-3:

Mammary implants were exposed to various simulated dive profiles followed by
altitude exposures to stimulate aircraft travel and then were observed for
bubble formation and volume changes. Minimal volume changes occurred after each
dive. Numerous bubbles formed, however, reaching their maximum size in 3 hours.
By comparison, when implants were exposed to high altitude following a dive
exposure, significant volume changes occurred. This in vitro study showed that
bubble formation and volume expansion occur after exposing implants to diving
and altitude, but the circumstances required to produce these changes in vivo
are extremely unlikely to occur normally.Please note that the pressure changes were exaggerated to simulate going up in an airplane after diving. The minor pressure changes in a pressure-regulated aircraft may temporarily produce few small bubbles in an implant, but of no consequence for the integrity of the implant.Your "experiment" with a prosthesis is a bit different because the structure of the shell and purity of the silicone is different from an implantable device.