Preservé vs Traditional Over-the-Muscle Breast Augmentation: What's Different?

By Dr. Kelly Killeen, MD FACS · Board-Certified Plastic Surgeon · Published February 2, 2026

If you look in that cavity with an endoscope, the undersurface of the breast looks quite different than with a traditional augmentation.

What Makes Preservé Different From Traditional Over-the-Muscle Augmentation?

What is the difference between Preservé and a traditional over-the-muscle breast augmentation? We were actually just discussing this at a conference, and I think the explanation really comes down to tissue preservation and how the pocket is created.

Understanding the Layers

There are different layers of the breast to consider:

  • Under the muscle (submuscular): The implant sits beneath the pectoralis major muscle
  • Over the muscle (subglandular): The implant sits under the breast tissue and over the pectoralis major
  • Subfascial: A type of over-the-muscle placement where we lift the fascia of the muscle to create a protective layer

Why the Fascia Matters

Many of us are doing subfascial augmentations, where we lift the fascia off the muscle. The reason: we want to protect the implant from the surface of the breast.

We don't want to cause cuts, rents, or openings in the posterior surface of the breast because there's a concern that bacteria could spill from the ductal system — potentially leading to biofilm or infection.

With a traditional subglandular augmentation using cautery, the posterior lamella — that very back layer of breast tissue — is pretty easy to damage. The fascia provides an extra layer of protection.

How Preservé Works

With Preservé, the approach is fundamentally different:

  1. A cannula is placed under ultrasound guidance
  2. Hydrodissection opens the space between the breast and the muscle — using fluid to gently separate the planes
  3. No cautery, no retractors making holes in tissue
  4. A balloon expander goes into the space that's already been created and gently expands it

The result: you're not using retractors that could tear tissue, you're not using cautery that could burn through layers. You're preserving the posterior lamella of the breast, which should reduce the risk of biofilm or bacterial contamination from the ductal system.

Is It Really Different?

I know there will be disagreements about whether this is truly different from a traditional over-the-muscle augmentation. But if you look inside the cavity with an endoscope after it's created, the undersurface of the breast looks quite different than it does after a traditional dissection.

The tissue is more intact, the planes are cleaner, and the preservation of that protective posterior layer is the key differentiator.

The Bottom Line

Preservé is designed to minimize tissue damage during pocket creation. By using hydrodissection and balloon expansion instead of cautery and retractors, we preserve the natural protective layers of the breast — which may reduce the risk of biofilm, infection, and capsular contracture.

Your Journey to Renewed Confidence

Journey to Renewed Confidence

Transform Your Life

Every person deserves to feel comfortable and confident in their own body. Our procedures aren't just about physical change. They're about reclaiming your life, your comfort, and your self-assurance.

Dr. Killeen and her team support you every step of the way, from your first consultation through recovery.

Take the first step toward the life you deserve.

Schedule Your Consultation
Journey to Renewed Confidence

Transform Your Life

Every person deserves to feel comfortable and confident in their own body. Our procedures aren't just about physical change. They're about reclaiming your life, your comfort, and your self-assurance.

Dr. Killeen and her team support you every step of the way, from your first consultation through recovery.

Take the first step toward the life you deserve.

Schedule Your Consultation

Related Articles

Preservé vs Traditional Breast Augmentation: Recovery Differences

Preservé vs Traditional Breast Augmentation: Recovery Differences

March 4, 2026

Dr. Killeen compares recovery between Preservé and traditional breast augmentation — from pain management to return to activity and long-term implant placement.

Why Breast Implants End Up in Different Positions and How to Fix It

Why Breast Implants End Up in Different Positions and How to Fix It

January 22, 2026

Dr. Killeen explains why breast implants can settle unevenly — from capsular contracture to tight muscles — and the treatments that help, including time, massage, Botox, and revision surgery.

Very Little Tissue and Considering a Breast Augmentation: Under or Over the Muscle?

Very Little Tissue and Considering a Breast Augmentation: Under or Over the Muscle?

June 15, 2026

Dr. Killeen breaks down the under-vs-over-the-muscle decision for thin breast augmentation patients — the traditional pinch test, why modern cohesive implants and fat grafting have changed the old rules, and the overlooked trade-off: thin patients see the implant more under the muscle, but they also see the muscle move more.

Dr. Kelly Killeen Logo

436 N. Bedford Dr., Suite 103

Beverly Hills, CA 90210

(323) 800-8588

Quick Links

Breast Procedures

© 2026 Dr. Kelly Killeen. All rights reserved.

Privacy Policy

|

Terms & Conditions