Choosing the right size for silicone implants is a crucial step in the breast augmentation process. The size directly influences the final appearance and symmetry with the body. Contrary to popular belief, the implant size is not based solely on bra size or cup volume. Instead, doctors rely on a set of precise measurements specific to body shape and breast structure.
The goal of selecting the correct size is to achieve a balanced outcome that combines aesthetic appeal, comfort, and harmony with the body's dimensions.
What is the Measuring Unit for Silicone Implants?

Silicone implants are measured in cubic centimeters (CC), representing the volume of material inside the implant.
Common sizes usually range from:
- 150 CC
- 250 CC
- 300 CC
- 350 CC
- 400 CC or more
Larger sizes are not always the best choice, as the appropriate implant varies for each woman depending on body shape and the amount of natural tissue.
Factors Determining the Appropriate Silicone Implant Size
Bust and Rib Cage Width
Bust width is a vital measurement that doctors consider when choosing the implant.
The implant must match the width of the bust base to avoid:
- Being wider than the natural bust shape
- Appearing disproportionate
- Being too close to the armpit or chest center
Thus, chest dimensions are measured before deciding on the final size.
Current Breast Size and Natural Tissue Amount
The outcome varies between women even with the same implant size because the amount of natural breast tissue affects the final look.
Women with more tissue may achieve a more natural appearance, while those with less may need to choose an appropriate size to cover the implant better.
Skin Elasticity
Breast skin elasticity plays a crucial role in determining the usable size. More elastic skin may accommodate a larger size, whereas limited elasticity may not support a large size.
Profile Degree
Selection is based not only on size but also on implant shape and projection degree.
Options generally include:
- Low projection for a natural appearance
- Moderate projection for a balance between fullness and naturalness
- High projection for a fuller look
The most suitable type is decided by the doctor based on body shape and desired results.
Can Silicone Size be Chosen Before Surgery?

Yes. There are ways to envision the expected outcome before surgery, such as using trial samples inside a bra at the clinic.
This method helps compare different sizes and understand the approximate appearance of each size, though it does not guarantee a 100% accurate result since body shape and tissue influence the outcome.
Does a Larger Size Lead to Better Results?
Not necessarily. Choosing an implant too large for the body dimensions may lead to an unnatural appearance or increased pressure on breast tissue.
Doctors usually prefer a size that aligns with:
- Body height
- Shoulder width
- Bust shape
- Skin type
- The purpose of the procedure
The primary aim is to achieve balance rather than just increase size.
The Difference Between Natural and Full-Looking Results
Women have different preferences post-breast augmentation. Some prefer a natural appearance close to the original breast shape, while others prefer a fuller look.
The result depends on:
- Implant size
- Silicone type
- Projection degree
- Implant placement method
- Body shape
The Role of the Doctor in Choosing Silicone Implants
A specialized doctor's assessment is a fundamental step before the procedure, usually including:
- Taking bust measurements
- Assessing skin and tissue
- Discussing desired results
- Suggesting suitable options
- Explaining benefits and potential risks
Relying on others' experiences to choose the size is not recommended, as what suits one woman may not suit another.
Tips Before Choosing Silicone Implants
Before making a decision, consider:
- Choosing a certified and experienced cosmetic surgeon
- Clearly discussing expectations
- Trying experimental sizes
- Avoiding selecting a large size solely for a noticeable change
- Understanding the type of implant used and the follow-up duration after surgery
Conclusion
Selecting the silicone implant size for breast augmentation is based on body measurements, bust width, natural tissue amount, and skin elasticity, not just preference or bra size. The correct choice aims to achieve a harmonious and natural result compatible with body shape.
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