Mentor Breast Implants — A Complete UK Guide

Mentor is one of the most widely recognised breast implant brands in the world, manufactured by Mentor Worldwide LLC — a subsidiary of Johnson & Johnson — with over 40 years on the global market. If you’re researching Mentor breast implants specifically, whether because you already have them, a friend recommended them, or you’ve simply come across the name in your research, this guide covers everything worth knowing: how Mentor implants are constructed, the MemoryGel and CPG ranges, surface technology, sizing, safety record, and how they compare with other brands.

A note on current practice at Centre for Surgery: our standard implant is Silimed, chosen following clinical review of surface technology and long-term safety data — see our full comparison in Best Breast Implants UK: Comparing Mentor, Motiva and Silimed. Mentor implants are not part of our routine offering, but remain available in specific cases where a patient has a clear preference or clinical reason for Mentor, discussed and agreed at consultation. This guide is intended as background information for anyone specifically researching the Mentor brand.

What Are Mentor Breast Implants?

Mentor breast implants are silicone-shelled implants used in cosmetic breast augmentation and post-mastectomy reconstruction. The shell is made of cross-linked silicone elastomer; the filler is cohesive silicone gel. They’re available across a wide range of shapes, profiles, sizes, and surface textures, allowing precise matching to a patient’s chest wall dimensions and aesthetic goals — one of the reasons “Mentor breast implants” and “Mentor implants UK” remain common search terms among women researching augmentation, even outside clinics where Mentor isn’t the default brand.

Mentor MemoryGel — Round Silicone Implants

The MemoryGel range is Mentor’s silicone gel-filled round implant line. The cohesive silicone gel inside the shell holds its shape while moving naturally with surrounding tissue, aiming for a result that feels close to natural breast tissue.

MemoryGel implants are available in three gel cohesivity levels:

• MemoryGel Standard — softer gel, most natural feel, suited to patients with adequate native breast tissue coverage.
• MemoryGel Xtra — slightly firmer gel with increased projection, suited to patients seeking more upper-pole fullness.
• MemoryGel Smooth Plus — designed for revision cases or where a more defined shape is required.

Round MemoryGel implants come in five projection profiles — moderate classic, moderate plus, moderate plus Xtra, high profile, and ultra-high profile — allowing the projection to be matched to chest width and desired look. Round implants are inherently rotation-proof: if the implant moves within its pocket, the appearance doesn’t change, since the shape is symmetrical.

Mentor CPG — Anatomical (Teardrop) Implants

Mentor Contour Profile Gel (CPG) implants are anatomically shaped — more projection in the lower pole with a gradual slope towards the upper pole, mimicking the natural shape of the breast. CPG implants use a firmer cohesive gel than MemoryGel round implants, a deliberate design choice that lets the implant hold its teardrop shape against gravity and surrounding tissue. The trade-off is that anatomical implants can theoretically rotate within the breast pocket, which would change the visible shape — a small but real risk, and part of why many surgeons generally favour round implants where anatomy permits.

Siltex Surface Technology

Mentor’s textured surface option is called Siltex — a micro-textured surface, engineered at a much finer scale than the heavier “macrotextured” surfaces that were withdrawn from several markets following their association with breast implant-associated anaplastic large cell lymphoma (BIA-ALCL). Siltex is designed to reduce capsule friction without the safety profile of macrotextured shells, and hasn’t been associated with BIA-ALCL in the way certain macrotextured implants from other manufacturers have.

Mentor also offers a smooth shell option, with no surface texturing, allowing more natural movement within the pocket.

Mentor Implant Sizes and Profiles

Implant size is measured in cubic centimetres (cc), not cup size. Mentor implants span a wide volume range, from roughly 100cc up to over 800cc. The right size for any individual depends on chest wall width, native breast tissue volume, skin elasticity, and the aesthetic outcome sought. Profile (projection) matters just as much as volume and is often less well understood — two implants of identical volume can look very different depending on projection, with a wider, lower-projection implant giving a more natural slope, and a narrower, higher-projection implant giving more forward fullness.

Mentor Safety Record

Mentor implants are MHRA-cleared in the UK and FDA-approved in the United States, with continuous post-market safety surveillance from both regulators, and a long, well-published safety track record reflecting over four decades on the market.

The most discussed safety concern in modern breast implant surgery is BIA-ALCL — a rare lymphoma specifically associated with certain macrotextured implant surfaces, most notably a range of implants recalled by the FDA in 2019. Mentor’s Siltex micro-texture is engineered to a different specification than those macrotextured surfaces and hasn’t been subject to a comparable recall.

Other recognised long-term considerations with any breast implant — Mentor included — are capsular contracture, implant rupture, and the much-debated condition of breast implant illness (BII). Routine monitoring with ultrasound or MRI is recommended for all silicone implants regardless of brand.

How Long Do Mentor Implants Last?

Mentor implants don’t have a fixed expiry date, and there’s no clinical requirement to remove or replace them at a specific age. In practice, most modern silicone implants last between 10 and 20 years before any clinical issue arises, and many last considerably longer — a picture broadly consistent across major implant brands, not unique to Mentor. See our guide on how long breast implants last for a full breakdown of monitoring, warranty terms, and when replacement is genuinely needed.

Mentor’s own MemoryGel Product Replacement Policy provides lifetime cover for confirmed rupture, with additional financial assistance for replacement surgery within the first ten years, and separately covers Baker grade III/IV capsular contracture and delayed-onset seroma for the first ten years post-implantation. As with any manufacturer warranty, it covers the replacement implant itself, not the cost of revision surgery.

Mentor vs Motiva vs Silimed — How Do They Compare?

Mentor, Motiva, and Silimed are all premium, CE-marked, clinically validated implant brands — the differences lie in gel formulation, surface technology, and manufacturer warranty rather than fundamental safety. Mentor’s key strength is its exceptionally long market history and correspondingly deep body of published outcome data. Motiva is a newer brand known for its position-dependent ProgressiveGel and embedded RFID identification chip. Silimed — our current standard at Centre for Surgery — is distinguished by offering four distinct surface options, including a polyurethane foam-coated range with a strong published capsular contracture safety profile, and a biotype-matched sizing philosophy.

For the full three-way comparison, including which brand tends to suit which patient profile, see: Best Breast Implants UK: Comparing Mentor, Motiva and Silimed. If you already have Mentor implants and are researching Motiva as an alternative, our companion guide covers that brand in equal detail: Motiva Breast Implants — A Complete UK Guide.

Frequently Asked Questions

Considering Breast Augmentation? Book a Consultation

Breast augmentation at Centre for Surgery is performed by GMC-registered plastic surgeons at our CQC-regulated Baker Street clinic, under TIVA (Total Intravenous Anaesthesia) as a day case. Our clinic holds an overall CQC rating of “Good” ↗. We recommend a two-week cooling-off period between consent and surgery.

At consultation, your surgeon will take detailed chest wall measurements, discuss your aesthetic goals, and recommend the implant brand, shape, profile, and volume best suited to your anatomy — explaining the clinical reasoning behind every recommendation, whether that’s our standard Silimed implant or, where appropriate, Mentor.

Finance is available through Chrysalis Finance, subject to status. Full pricing is confirmed at the end of your consultation.

Phone: 020 7993 4849
Email: contact@centreforsurgery.com
Address: 95–97 Baker Street, London W1U 6RN

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