Will the depression in my skin likely fill in, or will I need a revision? (Photo)

In March of 2016 i had a lipoabdominoplasty. The healing process resulted in a large area of necrosis and a wound opening that took approximately 4 months of twice daily wet to dry bandage changes. Now that it is closed i am left with a depression in the skin or an indentation. will this heal itself?

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