Saline is a lot safer, simply for the fact that if they happen to rupture in any way, the saline will just be filtered out through your blood, while the silicone can actually be toxic if it ruptured.
If in doubt, go with the saline, the contents are not toxic to your body (saline is actually a solution used in intravenous therapy to replace body fluids). However, over the last few years there have been more exacting and rigid standards imposed on silicone breast implants, so they have become safer. Still, the best is saline, especially since they are much more natural feeling according to friends/patients who have had them.
Saline is a lot safer, simply for the fact that if they happen to rupture in any way, the saline will just be filtered out through your blood, while the silicone can actually be toxic if it ruptured.
Saline is most like the fluids in your body.
If in doubt, go with the saline, the contents are not toxic to your body (saline is actually a solution used in intravenous therapy to replace body fluids). However, over the last few years there have been more exacting and rigid standards imposed on silicone breast implants, so they have become safer. Still, the best is saline, especially since they are much more natural feeling according to friends/patients who have had them.