Mentor implants are a line of breast implants made by Mentor Worldwide LLC, a subsidiary of Johnson & Johnson. They’ve been on the market for over 40 years and are one of only three FDA-approved breast implant manufacturers in the United States. Mentor produces both silicone gel and saline implants used in cosmetic augmentation, breast reconstruction after mastectomy, and revision surgery.
Silicone Gel Options: MemoryGel and MemoryGel Xtra
Mentor’s flagship silicone implants use a proprietary gel called MemoryGel. The name refers to the gel’s ability to return to its original shape when compressed, which is meant to mimic the feel of natural breast tissue. These implants come pre-filled, meaning the size is set before surgery and can’t be changed afterward.
The MemoryGel Xtra line, available since 2017, uses a slightly more cohesive version of the same gel. Compared to the standard MemoryGel, Xtra implants offer increased projection, upper pole fullness, and a firmer feel while still maintaining overall softness. Surgeons typically recommend one over the other based on the patient’s body frame, tissue thickness, and desired look. Women with thinner chest tissue may benefit from the standard MemoryGel’s softer feel, while those wanting more projection from the same base width might prefer the Xtra.
MemoryShape: The Anatomical Option
Mentor also makes an anatomically shaped implant called the MemoryShape (sometimes referred to by its clinical name, CPG). Unlike round implants that look the same in every orientation, MemoryShape implants are fuller at the bottom and tapered at the top, designed to create a more natural teardrop slope. The silicone gel inside has more chemical cross-linking than standard MemoryGel, making it noticeably firmer and better at holding its contoured shape.
MemoryShape implants come with textured shells, which help keep the implant from rotating inside the pocket. Rotation would be a problem with shaped implants because it could distort the breast’s appearance. These are available in multiple height and projection combinations, giving surgeons more flexibility to match a patient’s natural anatomy.
Saline and Adjustable Implants
Mentor’s saline implants are inserted empty and filled with sterile saltwater during surgery. This allows for smaller incisions compared to pre-filled silicone implants. The surgeon controls the final volume within a manufacturer-specified range, and underfilling or overfilling beyond those limits increases the risk of shell failure.
The Spectrum line adds a unique feature: post-operative adjustability. These implants connect to a small injection port placed under the skin, allowing the surgeon to add or remove saline in the weeks after surgery. This is particularly useful in reconstruction, where swelling and tissue changes can make it hard to predict the ideal volume at the time of the initial procedure. Once the desired size is reached, the fill tube and port are removed through a small incision under local anesthesia, typically within six months. It’s worth noting that Spectrum implants have historically carried higher reoperation and removal rates compared to standard saline implants.
Shell Surfaces: Smooth vs. SILTEX
Most Mentor implants are available with either a smooth or SILTEX surface. SILTEX is Mentor’s micro-textured shell, meaning it has a finely roughened surface rather than the aggressive texturing used by some other manufacturers. Texturing was originally developed to reduce capsular contracture, a complication where scar tissue tightens around the implant.
The distinction between micro-textured and macro-textured surfaces became medically important after cases of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) were linked primarily to heavily textured implants. As of June 2024, Mentor implants accounted for about 5% of the 1,380 BIA-ALCL cases reported to the FDA worldwide. For context, the overall risk remains very low, but the FDA notes that its reporting system has significant limitations, including underreporting and lack of verification. Many surgeons have shifted toward smooth-surface implants in recent years as a precaution.
Clinical Safety Data
FDA clinical studies of Mentor’s MemoryShape implants tracked patients for six years and provide a realistic picture of what to expect. For first-time augmentation patients, the rupture rate was 2.6% and the rate of significant capsular contracture (the grades that cause visible distortion or pain) was 2.4%. About 18% of augmentation patients needed a reoperation of some kind within six years, whether for a complication, size change, or implant replacement.
Reoperation rates were considerably higher for reconstruction patients, reaching roughly 44% to 45% over six years. This reflects the greater complexity of reconstruction surgery, where patients often have thinner tissue, prior radiation damage, and staged procedures rather than any deficiency in the implant itself.
Warranty Coverage
Mentor backs its implants with what it calls the MentorPromise warranty. All Mentor breast implants carry a lifetime guarantee against rupture or deflation. If a qualifying rupture occurs at any point, the patient receives up to two replacement implants of the same or similar style at no charge. If the rupture happens within the first 10 years, Mentor also provides financial assistance for surgical costs not covered by insurance. Other complications, such as capsular contracture, are covered with free product replacement for 10 years after the original surgery.
How Mentor Compares in the Market
In the U.S., Mentor competes primarily with Allergan (now part of AbbVie) and Sientra. Each manufacturer offers silicone and saline options, but there are differences in gel formulation, shell design, and available shapes. Allergan’s heavily textured Biocell surface was voluntarily recalled in 2019 due to BIA-ALCL concerns, which shifted significant market share toward Mentor and Sientra. Mentor’s SILTEX micro-texturing was not part of that recall.
Choosing between manufacturers usually comes down to a surgeon’s experience and preference, the specific implant dimensions that best fit your body, and which gel feel you prefer. Many plastic surgeons carry implant sizers from multiple brands in their offices so patients can compare the feel during a consultation. The implant brand matters less than getting the right size, profile, and placement for your anatomy.