What is the main purpose of surgical curettage in dental treatment?

The main purpose of surgical curettage in dental treatment is to remove soft tissue lesions. This procedure involves the scraping or debridement of the tissue from the surface of the bone or gums to eliminate diseased or pathological tissue. By doing so, it can help promote healing and create a clean environment for the subsequent treatment of the tissue or the underlying structures.

While altering bone structure, smoothing surfaces, and reducing inflammation can be related effects or goals of different dental procedures, these are not the primary focus of surgical curettage. The intent behind surgical curettage is specifically to address and remove abnormal tissue, making option A the most accurate choice in this context.