Silicone vs Saline Breast Implants: Which Is Right for You?
By Dr. Sushrut Tated, plastic surgeon · Updated
Silicone vs saline breast implants differ in what is inside the shell. Silicone gel implants usually feel more like natural breast tissue, and a leak may be silent, so periodic imaging is advised. Saline implants contain salt water, and a leak is obvious because the breast deflates. Both are used in breast augmentation and neither lasts a lifetime.

Dr. Sushrut explains breast augmentation
What are breast implants made of?
Every breast implant has an outer shell made of silicone rubber. What differs is the filling:
- Silicone gel implants are pre-filled with a cohesive silicone gel. Modern gels are thicker than older ones and hold their shape.
- Saline implants are filled with sterile salt water, usually during the operation.
Implants also vary in shape (round or teardrop), profile (how far they project), width and surface (smooth or textured).
Silicone vs saline implants at a glance
| Silicone gel | Saline | |
|---|---|---|
| Feel | Usually closer to natural breast tissue | Firmer; rippling more noticeable in thin tissue |
| If it leaks | Often silent; gel stays near the implant | Obvious; breast deflates as saline is absorbed |
| Checking for rupture | Periodic imaging (ultrasound or MRI) advised | Usually noticed without imaging |
| Incision | Usually a few centimetres, as the implant is pre-filled | Can be smaller, as the implant is filled after insertion |
| Use today | Most common choice | Less common |
| Lifespan | Not lifetime devices | Not lifetime devices |
Which implant suits you?
- Thin breast tissue: silicone gel, often with muscle cover, usually looks and feels more natural.
- Concern about silent rupture: saline makes a leak obvious, at the cost of a firmer feel.
- Smaller incision preferred: saline can go through a smaller cut.
- Natural feel as a priority: silicone gel is usually preferred.
Size, shape and placement matter as much as the filling. See breast implant placement for the choice of pocket and incision.
How long do breast implants last?
Breast implants are not lifetime devices. There is no expiry date, but the chance of needing another operation increases over time, for reasons such as:
- Capsular contracture: the scar capsule around the implant tightens, making the breast firm or misshapen.
- Rupture or leakage.
- Change in breast shape with age, pregnancy or weight change.
- Wish for a different size, or removal.
Plan for lifelong follow-up and, for silicone implants, periodic imaging as advised.
What is BIA-ALCL?
Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is a rare cancer of the immune system that can develop in the fluid or scar capsule around an implant, usually several years after surgery. It has been linked mainly to textured implants. The usual sign is new, persistent swelling of one breast from fluid. It is treated by removing the implant and capsule, sometimes with further treatment. Report any late swelling or lump to your doctor.
Myths about breast implants
- “Implants last forever.” They are not lifetime devices.
- “Saline is natural, so it is completely safe.” Saline implants share the main risks, such as capsular contracture.
- “You cannot breastfeed or have mammograms with implants.” Many women breastfeed, and screening is possible with special views.
- “Implants must be changed every 10 years.” They are changed when needed, not on a fixed schedule.
What follow-up do breast implants need?
Having implants means planning for long-term care:
- Routine check-ups with your surgeon or doctor, and prompt review of any change in shape, firmness, swelling or pain.
- Imaging for silicone implants: regulators recommend periodic ultrasound or MRI to look for silent rupture, starting some years after surgery and repeated at intervals.
- Breast screening as normal for your age, telling the radiographer that you have implants.
- Keeping your implant card, which records the manufacturer, type and size. It is needed if a safety notice is issued or the implant has to be replaced.
What should you ask your surgeon?
- Which filling, shape, surface and size do you recommend for me, and why?
- Which brand will you use, and will I receive the implant details and card?
- What follow-up and imaging should I plan for?
- What is your approach if I develop capsular contracture or a rupture?
The breast augmentation page explains the operation, recovery and risks in detail.
Frequently asked questions
Are silicone implants safe?
Silicone gel implants are widely used and regulators consider them reasonably safe for most women when the risks are understood. They are not lifetime devices, and possible problems include capsular contracture, rupture and, rarely, BIA-ALCL.
How do I know if a silicone implant has ruptured?
Often you cannot tell, because the gel usually stays within the capsule around the implant. This is called a silent rupture. Regulators recommend periodic imaging with ultrasound or MRI for silicone implants, beginning some years after surgery.
What happens if a saline implant leaks?
The salt water is absorbed by the body, and the breast becomes smaller over days. The implant is then replaced or removed in a planned operation.
Do I need to replace implants every 10 years?
There is no fixed replacement date. Implants are replaced or removed when there is a problem or a change you want. The longer you have them, the more likely you are to need another operation.
Do textured implants carry more risk?
Breast implant-associated anaplastic large cell lymphoma has been linked mainly to textured implants. It is rare. Discuss surface type with your surgeon.
Can implants cause illness?
Some women report symptoms such as tiredness, joint pain or poor concentration that they attribute to their implants, often called breast implant illness. Research is ongoing, and some women's symptoms improve after removal.
References
- Risks and Complications of Breast Implants. U.S. Food and Drug Administration.
- Breast Augmentation (StatPearls). NCBI Bookshelf, StatPearls Publishing.
- Common cosmetic procedures. British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS).












