Confused on size: 430cc or 450cc? Currently have 360cc (Photo)

Thank you very much for enquire.The only type of breast implant that can be re-filled with a syringe are the saline implants (if the valve can be located) but the consistency is that of a bladder filled with water, therefore i recommend you change them for Cohesive Gel - Silicone Breast Implants with textured cover ("gummy bear implants".They are quite safe and aesthetically best as they give a firmer consistency, better projection and most natural appearance than Saline implants.Respectfully,Dr. Emmanuel Mallol Cotes.-

The gap between your breasts can be improved by dissecting the pocket of each implant medially.  This will help round out the shape in this area.  Going up to 450 cc should be fine based on your current breast ptosis and skin quality. 

you need to sit with your surgeon to have a discussion about not only the volume but the look you want. Realize that your breasts sit far apart/you have a wide sternum, which will make it nearly impossible to get your implants/breasts right next to each other. I am sure they can be closer than you have currently, but that is just your breasts and the way they sit on your chest. As for size, no reason to use saline anymore, silicone/gel feel and look much better. Changing the profile/style can give you a perkier look depending on what you have in now(likely Mod+). Any implant swap under the muscle, you need atleast 75-100cc increase to see a significant difference in size. Best of luck. 

Eva,
Great questions and congrats on staying in great shape. Your implants are bottomed out in the photo you sent. I would suggest a consultation to be certain but you likely need a pocket revision and upsize to a moderate profile silicone textured implant.  Your widened look is due to bottoming out and incomplete release of the pectoralis medially.
Daniel Barrett, MD, MHA, MSCertified, American Board of Plastic Surgery Member, Am. Society of Plastic Surgery

Hi  and thank you for the question. The size change that you were asking about is very conservative. When my patients are interested in switching to larger implants, I Typically tell them it will take between 150 and 250 cc to really notice much of a difference. One suggestion for you is to find a practice like mine that uses the Vectra 3-D imaging system. We use this software to show our patients what they would look like with different size implants. We use this both during the patients first surgery to pick implants, as well as revision surgeries when patients are trying to figure out how much larger to go. My other suggestion would be for you to consider silicone implants instead of saline.  Silicone  implants tend to be softer and give a more natural look and feel. The vast majority of patients who have had both types of implants prefer their silicone implants. Good luck to you.

Dr West