Dermabrasion combined with CO2 Fractional Laser, is this a common & successful treatment for acne scars and aging lines? (Photo)

I consulted with a dermatologist on my acne scaring, deeper scars to the right and left of my chin area. I thought a filler would help but he has suggested dermabrasion combined with CO2 Fractional Laser. I am a mid 50's female. I had dermabrasion in my late 20's with good results and had temporary fillers as a follow-up for the deeper scars but discontinued that in my 30's. I feel aging skin makes the scars more noticeable, I just want to be sure this is the right procedure for me. Cost Est. 6K