By Michael Spann, MD · Double board-certified plastic & reconstructive surgeon · Little Rock Plastic Surgery Medically reviewed by Dr. Spann · Last updated July 2026
Quick answer: Saline implants feel firmer but announce a rupture immediately by deflating. Silicone gel feels most like natural tissue but ruptures silently, which is why the FDA recommends periodic imaging. Motiva SmoothSilk implants, FDA approved in September 2024 as the first new silicone implant since 2013, are cohesive gel implants with a low-inflammatory surface and dynamic movement. The right choice depends on your tissue, your priorities, and your comfort with monitoring. No implant is universally best.
I have placed breast implants for more than twenty years. In that time I have used every category of device on this page, and I have revised plenty of work done elsewhere. So when patients ask me which implant is best, I give them the answer I would give my own family. There is no best implant. There is only the implant best matched to your anatomy, your goals, and how you want your result to feel. Here is how the three options actually compare.
Saline Implants
A saline implant is a silicone shell filled with sterile salt water. The shell goes in empty and I fill it during surgery. That gives me fine control over volume, lets me correct minor asymmetry between the two sides, and allows a slightly smaller incision.
The tradeoff is feel. Saline is firmer than gel. It behaves less like natural breast tissue, and in a patient with thin soft-tissue coverage it will ripple. I tell patients this plainly because it matters.
Saline has one genuine advantage, and it shows up at rupture. If the shell fails, the implant deflates and you see it. The saline is harmless and your body simply absorbs it. There is no silent leak and no guessing. Saline is FDA approved for augmentation at age 18 and up.
Silicone Gel Implants
Silicone gel is the most popular choice in this country, and it earned that position. The cohesive gel mimics natural breast tissue better than anything else we have. Modern form-stable versions, the ones patients call gummy bear implants, hold their shape and resist the shell folding that leads to wear.
The consideration with silicone is that a rupture is usually silent. The cohesive gel stays largely in place, so you often cannot feel or see that anything has changed. That is why the FDA recommends periodic ultrasound or MRI screening for gel implants. It is not a scare tactic. It is simply how you monitor a device that does not announce its own failure. Silicone gel is FDA approved for augmentation at age 22 and up.
Motiva SmoothSilk
Motiva is the most significant new implant to enter the U.S. market in over a decade, and I say that as someone who has watched this market closely for my entire career. In September 2024 the FDA approved Motiva SmoothSilk Ergonomix and SmoothSilk Round implants for primary and revision augmentation in women 22 and older. That was the first premarket approval granted to a new silicone breast implant since 2013. It matters because the approval rests on a modern, rigorous American clinical trial rather than legacy data.
Motiva is still a silicone gel implant. What separates it is the engineering:
- SmoothSilk / SilkSurface. An ultra-smooth surface built to reduce the inflammatory response where implant meets tissue.
- BluSeal barrier layer. A visible barrier within the shell that guards against gel bleed and allows shell integrity to be verified.
- TrueMonobloc shell. A flexible one-piece construction designed to move naturally and resist rupture.
- Ergonomix behavior. The gel and shell shift with your position. The breast sits fuller when you stand and softens when you lie back, the way natural tissue does.
- Q Inside, optional. A micro-transponder that allows your implant details to be verified from outside the body without imaging.
The U.S. trial numbers are strong. Capsular contracture and rupture rates came in under one percent at three years for primary augmentation. Those figures sit well below many historical averages. For the patient who prioritizes natural feel and natural movement, Motiva deserves a serious look.
Side-by-Side
| Saline | Traditional Silicone | Motiva SmoothSilk | |
|---|---|---|---|
| Fill | Sterile salt water | Cohesive silicone gel | Cohesive silicone gel |
| Feel | Firmer | Very natural | Very natural, dynamic |
| Rippling risk | Higher (thin tissue) | Lower | Low |
| Rupture signal | Obvious (deflates) | Silent | Silent |
| Routine imaging | Not required | Recommended | Recommended |
| Surface | Smooth | Smooth or textured | SmoothSilk (low-inflammatory) |
| Min. age (aug) | 18 | 22 | 22 |
| U.S. availability | Long-standing | Long-standing | FDA approved 2024 |
How I Help Patients Choose
After two decades of doing this in an AAAASF-accredited surgical facility, I can tell you the pattern I see in nearly every consultation. Patients walk in fixated on the brand question. They walk out understanding that the real decision was about their own tissue all along.
The choice comes down to a handful of factors. How much natural coverage you have. How much a natural feel matters to you. Your tolerance for routine imaging. Your appetite for newer technology versus a longer track record. A thin patient who wants the most natural result belongs in gel. A patient who values the deflation warning and a smaller incision may do well with saline. My job is to lay out the evidence, examine your anatomy, and make the decision with you. You should never leave a consultation feeling like you were sold an implant.
Frequently Asked Questions
Which implant is safest? All three are FDA approved and safe. They differ in feel, rupture behavior, and monitoring, not in whether they belong in your body. The bigger safety variables are your surgeon’s training and an accredited surgical facility.
Which feels the most natural? Cohesive silicone gel, including Motiva. The difference is most noticeable in patients with thinner coverage.
Do implants need to be replaced every 10 years? No. That is a myth I correct weekly. Implants are not on a timer. You replace them when a problem develops, such as rupture or capsular contracture, or when your goals change. Many last well beyond a decade.
How would I know if a silicone implant ruptured? Often you would not, which is exactly why the FDA recommends periodic ultrasound or MRI for gel implants. Saline deflates visibly and tells you itself.
Are Motiva implants worth it? For the right patient, yes. The surface technology and dynamic feel are real advances, not marketing. Whether Motiva is right for you depends on your anatomy and priorities, and that is a conversation we have in person.
Want a straightforward recommendation based on your body and your goals? Schedule a consultation with Dr. Michael Spann at Little Rock Plastic Surgery, serving Central and Northwest Arkansas. Call 501-219-8000 or request a consultation online.
This article is educational and not a substitute for a personal medical consultation. Individual results and candidacy vary.
Sources & Further Reading
- U.S. FDA: Breast Implants: labeling, screening recommendations, and approved devices (fda.gov)
- U.S. FDA: Premarket Approval P230005, Motiva SmoothSilk Round & Ergonomix (Sept 2024)
- Establishment Labs: U.S. FDA approval announcement (Sept 26, 2024)
