Dermaroller/demastamp on dents from steroid injection?

hello i just had steroid injection on my cheek to remove scar tissue inside my cheek that i got from thread lift. but i guess the steroid was too much or too superficial, i got dents on my cheek now.. kinda look like box scar. i had filler in the dents but its still look bad and filler only last temporary so i am thinking to do dermastamp on the dents but will it help grow back collagen or fat to fill the dents?