Saline vs silicone: rupture looks completely different
The single most important thing to understand is that the two implant types fail in opposite ways. A saline rupture is obvious within days; a silicone rupture often produces no signs at all. Knowing which type you have shapes what to watch for.
Saline rupture — the obvious deflation
When a saline implant ruptures, the salt-water filler leaks out through the tear and is harmlessly absorbed by your body. The visible effect is rapid: the breast deflates and loses size and shape over hours to days, ending up noticeably smaller and different from the other side. It's not dangerous — the saline is harmless — but it's cosmetically unmistakable, so saline rupture essentially announces itself.
Silicone rupture — the "silent" rupture
Modern silicone implants contain a cohesive gel that tends to stay within the implant shell or the surrounding capsule even after the shell tears. As a result, a silicone rupture frequently causes no change in size, shape or symptoms at all — which is why it's called a "silent rupture." Many are discovered only on imaging done for another reason. This is precisely why imaging surveillance matters for silicone implants (see how long implants last).
Symptoms that can occur
While silicone rupture is often silent, sometimes — with either type — there are signs as the tissue around the implant reacts:
- A change in breast shape or size, or new asymmetry
- New firmness or hardening (which can also signal capsular contracture)
- Lumps, swelling or a change in contour
- Tenderness, discomfort or an aching sensation
- Tingling, burning or other altered sensation
None of these is exclusive to rupture, so they warrant assessment rather than alarm. But for a saline implant, sudden deflation is the clear giveaway, and for silicone, any of these changes is worth imaging.
How rupture is detected
Because silicone rupture is often invisible, imaging is the only reliable way to confirm it. An MRI is the most sensitive test for detecting a silicone shell tear and gel outside the shell; ultrasound is a widely used and more accessible alternative. A clinical examination alone cannot rule out a silent silicone rupture, which is why the FDA recommends periodic imaging — starting around 5–6 years after surgery and then every 2–3 years.
What to do if you suspect a rupture
A ruptured implant is not a medical emergency — you don't need to rush to A&E. But it should be assessed and, once confirmed, addressed. The standard treatment is removal of the ruptured implant and the surrounding capsule, with the option to replace it, change size, or remove implants altogether at the same time — see implant replacement and implant size change. Many patients use the opportunity to reassess what they want, rather than simply swapping like-for-like.
The bottom line: trust deflation as the sign of saline rupture, don't trust the absence of symptoms with silicone, and keep up with imaging — it's the only way to catch a silent rupture before it's been there for years.
