What can I do about indented scar after stitches were taken out? (Photos)

First of all we have to make sure that the scar has healed completely and it normally takes 9 to 12 months for that to happen.  Once the scar has matured, you can have the scar re-evaluated by plastic surgeon and determine if and what should be done. There are three main ways in which this type of a scar can be approached. Number one, is to do just what you had mentioned and that is subcision with a filler. Number two, the procedure involves subcision and filling out the indentation with your own fat. And number three is to have the scar completely revised. I hope this helps and good luck from New York City

Fillers are temporary and will need to be repeated once or twice per year. A scar revision is likely to give a better result.