Would There Be Much Difference in a 425 cc High Profile Silicione Gel Compared to 500 cc?

Hello and thank you for your question. Honestly, a formal in-person evaluation would be needed to determine the best treatment. There are several reasons for this:
1) Bra sizes vary based on the clothing store (for example, Victoria's Secret tends to upsize everyone by a whole cup size)
2) Most women do not wear the proper exact fitting bra size for their bodies
3) The exact volume (in cc) needed to change cup size is different for different body types (e.g. 32A to 32D requires a different implant size than 38A to 38D)
4) Be careful NOT to fall into the trap most women do- they see a certain implant size (e.g. 285 cc) or perhaps their friend had a certain size, and they want or request this or another size based on that. Everyone's body is different- 285 cc implants on your friend might look VERY different than they would on you. Be very careful not to make this mistake, because the goal is to find the right size and shape for YOU- for your particular body and your breasts.

Because of those multiple factors, and because it is KEY to fully evaluate your breasts in person to make a full set of precise measurements to select the proper implant for you (incorporating factors like amount of breast tissue, implant type, base width, projection, etc), answering your question really would need a formal personalized consultation- to say anything before that would simply be guessing, which would be both unfair and unhelpful to you. Also, just FYI, each surgeon's measurements are slightly different, so numbers, experience, and overall aesthetic from one surgeon aren't necessarily the same as those from another surgeon!

Your breasts are such a KEY area of your body and your femininity- therefore, you should ONLY trust an experienced aesthetic plastic surgeon. As such an expert, I have had extensive training and experience with complex aesthetic surgeries under a multiple world-renowned experts in the field. I’d recommend for you to setup a formal consultation with me (or another plastic surgeon who is extremely comfortable with aesthetic plastic surgery procedures) for a formal consultation to thoroughly discuss your surgical goals, undergo a formal examination, evaluate all your options (surgical and nonsurgical), and decide on the best procedure(s) and type of anesthesia for your specific case. I hope this helps!

Dr. Donald Groves
Aesthetic Plastic Surgeon

If you were my relative, I would tell you to not bother undergoing the risks of surgery to achieve this small of an increase unless it were to manage breast asymmetry.  AS long as the diameter falls within your breast diameter, it doesn't matter which manufacturer you go with.

Yes you will notice a small difference between the two sizes of breast implants you mentioned. If you are petite and have a narrow breast width, a high profile breast implant for your breast augmentation surgery would likely be the recommended choice. You should consult with a board certified plastic surgeon who can perform a breast exam and take the appropriate measurements to ensure you choose a breast implant size that suits your body and frame and that is not too large to increase the rate of short and long term complications.

This difference depends largely on your frame.  In a thin woman, the difference would be quite apparent.  In a broader woman of fuller build, the difference would not be substantial.  If you are petite with a narrow base width, it is best to choose an implant with a narrower base diameter than your breast.  If the implant is too wide, it will augment more laterally than anteriorly.  Try them on in an unpadded bra and see what you think.

Hi there-

In most patients, the difference in implant volumes you describe would be subtle...

I would recommend you communicate your goals for appearance carefully with your surgeon and let him make the call at surgery (once he has an understanding of how the two look inside of you).

The difference between a 425 cc High Profile Silicone Gel Breast Implant, compared to a 500 cc breast implant is about half a cup size. In general High Profile Breast Implants work better for petite frames when larger cup sizes are desired. This is because the base diameter of the breast is smaller when the frame is smaller, higher profile implants have narrower diameters for the same volume when compared to moderate and low profile implants.

The diameter of the implant should approximate the diameter of the breast. Too big, and the implant pushes off to the side too much. Too narrow, and the space between the implants expands. Balancing cup size and implant diameter is possible with the addition of different implant profiles for the most frames and the commonly desired breast sizes.

The difference between a 425cc and 500cc high profile device is noticeable. Typically, most women will notice implant volume difference of 50cc or greater between two implants of the same projection. Allergan and Mentor have slightly different sizes between their implants. The choice of what implant would best fit your frame is a question that is answered with a comprehensive breast exam. In general, for women with smaller breasts or petite frames who wish to have larger implants, the high profile allow for a narrower implant to fulfill these goals.

A slightly larger volume implant will make the breast look a bit wider and give slighly more projection.  On a petite frame it is usually better to go with the narrower implants which often means the HP for larger volumes.

You can figure about 75 cc's LOL. But the 500 cc will make you a half size larger. Yes the more narrow the diameter the more implant projection. 

The difference in the implants you mentioned is about 15% in volume and even less in diameter and projection so the perceptible difference is quite slight. If you are trying to choose between the two, I would usually ask you, "If you came out larger than you wanter, or smaller than you wanted, which situation would make you more unhappy?" I would make choices depending on your answer. In general, the flatter, less projecting the implant, the more natural the look in a thin, slight-framed patient.