Which procedure involves controlled scraping of the skin to help remove scars?

The procedure that involves controlled scraping of the skin to aid in the removal of scars is dermabrasion. This technique is specifically designed to improve the appearance of skin by mechanically exfoliating the outermost layers, making it especially effective for treating scars caused by acne or other skin issues.

Dermabrasion uses a specialized instrument to "sand" the skin, removing the damaged top layer and promoting the regeneration of healthier skin underneath. This method helps in smoothing out irregularities and can significantly enhance the skin's texture and appearance over time.

In contrast, microdermabrasion involves a milder approach that uses tiny crystals to exfoliate the skin's surface without the same level of depth as dermabrasion, making it more suitable for general skin rejuvenation rather than scar removal. Ablation refers to the removal of tissue, often through laser techniques, but it does not specifically denote scraping as dermabrasion does. Exfoliation generally refers to the shedding of dead skin cells and doesn't imply the controlled scraping action necessary for scar treatment.