Will my concave breasts after bilateral 660cc implants removal improve? (Photos)

Thank you for the question.  Your concerns are certainly understandable; some general thoughts may be helpful to you.
 
Generally speaking, what your breasts will look like after explantation depends on several factors such as: the quality of skin elasticity (the better the elasticity the better the skin will bounce back), the size of the implants used (the larger the implant the more trouble you may have with redundant skin), and the amount of breast tissue present at this time (which may have changed since the time of your breast augmentation).
Life experience since your breast augmentation procedure, such as pregnancy or weight gain weight loss, will potentially influence the factors discussed above. If you take these factors into consideration and apply them to your specific circumstances you may get a good idea of what to expect after the implants are removed.  
 Patience is definitely indicated after removal of breast implants; it will take many months/year for the skin to “bounce back” and for you to see the final appearance of the breasts.  It is very likely, based on your photographs and my experience with many patients who have undergone breast implant removal surgery, that you will be much happier with the appearance of your breasts several months from now than you are now.
 
I hope this helps. Best wishes.

Dear 2014Anna,
you are still in early postoperative period and your results should improve with time. If you want to avoid implants, you can consider fat transfer to fill the gap. If you have any concerns, I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery