Choosing the Right Breast Implant: Size, Profile, and Material

Why Implant Selection Matters

Breast augmentation is one of the most commonly performed aesthetic procedures worldwide. The results — when implants are chosen and positioned correctly — are natural-looking, proportionate, and long-lasting. When they are not, revision surgery becomes necessary.

The implant selection process is not a simple menu of options. It is a medical decision based on your anatomy, your existing breast tissue, your lifestyle, and the aesthetic you are hoping to achieve. This guide explains the key variables so you can have a more informed conversation with your surgeon.

Silicone vs Saline

Silicone implants are filled with a cohesive silicone gel that closely mimics the feel of natural breast tissue. They are soft, natural in texture, and maintain their shape reliably over time. Modern cohesive gel implants — sometimes called "gummy bear" implants — retain their shape even if the shell is compromised. They require a slightly longer incision than saline implants.

Saline implants are filled with sterile saltwater after insertion, which means they can be placed through a smaller incision. If the shell ruptures, the body safely absorbs the saline. However, they tend to feel firmer and are more prone to visible rippling, particularly in patients with little natural breast tissue.

For the vast majority of patients, silicone implants are the preferred choice for their superior feel and more natural appearance. Saline implants remain a valid option in specific circumstances, and your surgeon will advise accordingly.

Round vs Anatomical (Teardrop) Implants

Round implants are circular, with equal fullness in the upper and lower poles. They provide consistent upper pole fullness — the look associated with a fuller, more enhanced appearance — and are forgiving of any rotation, since all sides are identical. They are the most widely used implant type.

Anatomical (teardrop) implants are shaped to mimic the natural breast — with more volume in the lower pole and a gentle slope at the top. They are textured to adhere to the surrounding tissue and reduce the risk of rotation. When positioned correctly, they can produce an exceptionally natural profile, particularly in patients who want a subtle, proportionate result.

The choice between round and anatomical depends on your starting anatomy, the amount of breast tissue you have, and the look you want to achieve. Neither is universally superior.

Implant Size: Volume and Dimensions

Implant size is measured in cubic centimetres (cc). A common misconception is that size selection is simply a matter of picking a cup size. In reality, the implant dimensions — diameter, height, and projection — must match your chest wall width and existing breast footprint.

Choosing an implant that is too wide for your chest can cause problems with the implant sitting too close to the armpit or interfering with breast tissue. Choosing one that is too narrow may not achieve the coverage you want.

The best approach is a combination of dimensional planning (measuring your chest width and matching it to an appropriate implant diameter) and volume assessment using sizers or 3D imaging during your consultation. Seeing how different volumes look on your specific frame is far more useful than picking a number.

Implant Profile: Low, Moderate, High, or Extra High

Implant profile refers to how far the implant projects forward from the chest wall for a given diameter. A high-profile implant has a narrower base and greater projection; a low-profile implant is wider and flatter.

Profile selection interacts closely with size and your body proportions. Your surgeon will recommend the appropriate profile based on your measurements.

Implant Placement: Over or Under the Muscle

Subglandular (over the muscle) placement positions the implant between the breast tissue and the pectoral muscle. Recovery is faster and there is less distortion during exercise. It is suitable for patients with adequate breast tissue to cover the implant naturally.

Submuscular (under the muscle) placement positions the implant partially beneath the pectoral muscle. This provides additional soft tissue coverage — particularly in the upper pole — making the implant less visible and palpable. It is recommended for patients with little natural breast tissue. It also improves mammogram imaging. The trade-off is a slightly longer and more uncomfortable recovery.

Dual plane technique is a refined version of submuscular placement that releases part of the lower muscle to allow the implant to interact more naturally with the breast tissue. It combines benefits of both approaches.

The Incision Options

What to Discuss at Your Consultation

Breast augmentation is a long-term commitment. Implants are not lifetime devices — most manufacturers recommend monitoring and potential replacement after 10–15 years, though many implants remain in good condition for longer. Plan accordingly.