What is the Cc and Cup Size after a surgery with 280 grams with diameter 116mm

Thanks for the question -
Cup size is a bit of a difficult measurement. The reason why is there is no defined standard. You've probably noticed that a cup size in one bra brand can be different in another brand. You probably own bras with different cup sizes.
Cubic centimeters (cc) on the other hand is a very precise and standard management. This measurement deals with volume and is the standard for implant sizing.
Your final cup size will depend on the your original breast tissue, chest wall shape, skin envelope, implant size, implant position, implant shape...
and after all of that (and more) bra manufacturer.
You can get a rough idea of your final shape by using rice in a bag of the equivalent volume you're considering. Be sure to try the rice with multiple bras and outfits and give yourself a few days to consider your volume. Remember this will give you only a rough idea of what the cc's you're considering will provide in terms of breast shape.
I hope this helps.

It is very difficult to determine the exact size and shape implant you will require to best match your ideal breast image without an examination by a board certified plastic surgeon. Not just any board certified plastic surgeon, but one with many years of frequently performing breast augmentation surgery including different approaches, techniques and implant choices. This is because several measurements not to mention your breast characteristics are needed to determine the optimal implant size to obtain your goals. Without knowing these dimensions it would be difficult to make this determination. For example, the existing base width of your breast will determine, in many cases, the maximal volume per implant profile that you can accommodate. To illustrate; a 100 cc difference may make a significant difference with a narrow base width breast, but much less of a difference if you have a wide chest wall and wide breast “foot print”. Therefore, just because your friend may have a great result with let’s say a 350 cc implant to make her go from a “A” cup to a “C” cup size does not mean that you will have the same result with the same size implant. . Further simply placing implants in a bra to determine the size best for you is not always accurate as the bra often distorts the size, is dependent on the pressure the bra places plus the implant is outside your breast and not under it among other variables. Computer software morphing programs that automatically determine the best implant size can be helpful in some but not all cases (e.g. doesn’t work well in my experience with existing implants, sagging or asymmetric breasts). Using “want to be” photos however are useful if simply provided to the surgeon as I will further explain in the following link:

Hello! Thank you for your question. In general, implant size does not correlate with bra cup size. The cup size itself will vary from manufacturer to manufacturer as well as who is doing the actual measurements. Thus, cup size is never a reliable indicator for your breast size. I typically encourage my patients not to communicate her desires in cup size but more on the actual look and appearance. Good communication between you and your surgeon of your expectations is warranted - choosing your surgeon wisely is the first step. Discussion of your wishes and having an honest and open dialog of your procedure is mandatory (e.g, implant type, incision, placement, lift, etc). I have found that photographs brought by the patient is helpful to get a visualization of the appearance you wish for in terms of size, shape, fullness, etc. In addition, your surgeon's pre and postoperative photographs should demonstrate a realistic goal for you. Once this has been accomplished, allow your surgeon to utilize his/her best medical judgment during the procedure to finesse the best possible result for you after preoperative biodimensional planning and fitting the right implant for your breast width. Hope me that this helps! Best wishes for a wonderful result!

Generally you can average a cup to be between 150-200cc. Given the size of 280gm you are going from 1.5-2 cup sizes up which would end you near a D cup.
Clearly there are many other factors that go into this which makes this an inexzact science.
For example, the 34 is a band width and roughly measures your boney skeleton. Your band width should theoretically not change but in reality it likely will. Therefore it is more likely you will be a 36D for two primary reasons:
Women tell me that it is very difficult to find a 34D unless specially ordered.
Women generally feel more comfortable going up a band width.

The cup size depends on your chest diameter. Therefore, the same cc or implant size will lead to different cup sizes in different people. If you have a large chest diameter, then the same implant will have a lower cup size than someone with a smaller chest diameter.