Implant Type Β· 2 of 5
Cohesive gel (gummy bear) implants
Highly cohesive silicone gel implants β form-stable devices that maintain shape if the shell is breached. The relevant trade-off: rupture safety and shape stability vs slightly firmer feel.
Clinical summary
Cohesive gel ("gummy bear" / form-stable) implants are silicone gel devices with sufficiently cross-linked gel to hold shape if the shell is breached. Trade-off: rupture safety + shape stability vs slightly firmer feel. Most modern practice uses moderately cohesive gel for round implants (best natural feel) and highly cohesive (form-stable) for anatomical/teardrop implants (shape retention). Pricing premium ~10-20% over standard silicone gel.
Cohesive gel spectrum
Silicone gel cohesiveness is a spectrum, not a binary. Manufacturers offer different cohesiveness levels within their product lines:
| Cohesiveness | Feel | Rupture behaviour | Best for |
|---|
| Mildly cohesive | Very natural, soft | Older formulations could leak | Largely obsolete in modern practice |
| Moderately cohesive (standard modern) | Natural breast tissue feel | Gel slow-flow if shell breached | Round implants where feel is priority |
| Highly cohesive (form-stable) | Slightly firmer, "rubber-like" | Gel maintains shape β does not flow | Anatomical implants where shape is priority; rupture-conscious patients |
| Ultra-cohesive (specialty) | Notably firm | Maintains shape under significant force | Specialty applications; revision rebuild |
Brand-specific cohesive products
| Brand | Cohesive product line | Notes |
|---|
| Mentor | MemoryShape | Anatomical; highly cohesive; FDA-approved 2013 |
| Allergan / Natrelle | Inspira (multiple cohesion levels) | SoftTouch, ResponsiveSiltex, TruForm β different cohesiveness levels |
| Motiva | ProgressiveGel Plus, ProgressiveGel Ultima | Multiple gel formulations across product lines |
| Polytech | POLYtxt cohesive | Multiple cohesive variants |
| Sientra | HSC, HSC+ | High strength cohesive levels |
| Sebbin | Highly cohesive variants | Multiple lines |
The shape stability benefit
The most meaningful clinical advantage of highly cohesive gel: anatomical (teardrop) shape retention. Anatomical implants are designed to mimic the natural breast slope β fuller at the bottom, tapered at the top. If the gel is not cohesive enough, the implant can deform when the patient lies down (the gel flows toward the dependent position), losing the teardrop shape temporarily. Highly cohesive gel maintains the teardrop shape regardless of patient position.
For round implants, shape stability is less relevant β round implants look round regardless of orientation. Cohesive gel in round implants is primarily a rupture safety feature, not a shape feature.
The feel trade-off
Patients comparing implants in clinic ("sizers" they can hold) often notice highly cohesive implants feel firmer than standard silicone gel. This is real and consistent. The clinical question is: how much does this matter under the breast tissue?
- Patients with substantial overlying breast tissue (more than 3 cm pinch): the breast tissue itself dominates the feel β implant cohesiveness is largely masked.
- Patients with thin overlying breast tissue (less than 2 cm pinch): the implant feel is more apparent. Highly cohesive may feel noticeably firmer.
- Patient priorities matter: patients prioritising rupture safety often accept the slightly firmer feel; patients prioritising natural feel often accept the slight rupture-flow risk of moderately cohesive.
The honest framing. "Gummy bear" is a marketing term that has come to dominate consumer discussion. Medically, cohesive gel exists on a spectrum, and the right cohesiveness for you depends on whether you prioritise feel or shape stability or rupture safety. There is no universal "best" cohesiveness. The discussion during consultation should articulate the trade-off in terms specific to your anatomy and priorities.
Frequently asked questions
What does 'gummy bear' mean for breast implants?
'Gummy bear' is a marketing term for highly cohesive silicone gel implants β devices where the gel is sufficiently cross-linked (cohesive) to hold its shape if the outer shell is breached. The term references the texture of gummy bear candy: when cut, it does not flow but maintains its shape. Highly cohesive implants behave the same way. Standard silicone gel implants are moderately cohesive; cohesive gel implants are formally form-stable. Manufacturer terminology varies β Sientra calls theirs HSC+ (high strength cohesive); Mentor calls theirs MemoryShape; Allergan called theirs 410. Form-stable is the medically accurate term.
What is the advantage of cohesive gel over standard silicone?
Two main advantages: rupture safety (gel does not flow if shell is breached, reducing migration into surrounding tissue) and shape retention (anatomical/teardrop implants particularly benefit from form-stability β they maintain their teardrop shape consistently). Disadvantage: feel β highly cohesive implants are firmer than moderately cohesive, less natural-feeling. The trade-off is rupture safety + shape stability vs natural feel. Modern practice tends toward moderately cohesive in round implants (best feel) and highly cohesive in anatomical implants (shape retention).
Are cohesive gel implants harder to feel than regular silicone?
Yes β but the difference depends on the specific cohesiveness level. Mildly cohesive: feels essentially identical to standard silicone gel. Moderately cohesive (most modern silicone): natural feel similar to breast tissue. Highly cohesive (gummy bear): firmer feel, more 'rubber-like' than 'gel-like.' Patients prioritising natural feel typically choose moderately cohesive (any modern silicone gel). Patients prioritising shape stability or rupture safety choose highly cohesive. The decision is preference-based, not absolute superiority of one over the other.
Are gummy bear implants more expensive?
Slightly. Cohesive gel and form-stable variants are typically priced 10-20% above standard silicone gel implants from the same brand. The price premium reflects the more advanced gel formulation and shell technology. In an all-inclusive Turkey package, the difference is typically β¬200-β¬500 between standard silicone gel and cohesive/form-stable. For specialty form-stable anatomical implants (Allergan 410, MemoryShape), the premium can be β¬500-β¬1,000.
Do gummy bear implants rotate less than regular silicone?
When anatomical (teardrop) β yes, slightly. Form-stable anatomical implants maintain their teardrop shape if rotation occurs, but rotation itself is still possible. Modern texture surfaces (microtextured, macrotextured) reduce rotation risk by encouraging tissue ingrowth. Pure form-stability does not prevent rotation β it just makes rotation less aesthetically catastrophic if it happens. For round implants, rotation is irrelevant (rotation does not change appearance). Cohesive gel is most relevant for anatomical implants where shape consistency matters.
Are highly cohesive implants safer than less cohesive?
For specific safety concerns β yes. Rupture safety: highly cohesive gel does not flow if shell is breached, so consequences of rupture are reduced. Migration into surrounding tissue is essentially eliminated. Capsular contracture rates: probably similar between cohesive levels. BIA-ALCL: surface texture, not gel cohesiveness, is the relevant risk factor. So 'safer' applies specifically to rupture safety, not all complications. Most modern practice considers highly cohesive a safety upgrade in patients prioritising worst-case rupture scenarios.
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