What procedure involves the removal of overhanging margins?

The procedure that involves the removal of overhanging margins is scaling. Scaling is a key part of dental hygiene that specifically targets plaque and calculus buildup on the tooth surface, including areas near gum lines and around restorations where overhangs may occur. Overhanging margins can trap food particles and bacteria, leading to periodontal disease and decay. By performing scaling, dental hygienists can effectively clean these areas and promote better oral health.

While polishing can improve the smoothness of tooth surfaces after scaling, it does not specifically address the issue of overhanging margins. Restoration involves placing or repairing fillings and other dental work, which may include addressing overhanging margins as part of the procedure, but it is not the process that directly removes them. Curettage typically refers to the removal of tissue or debris from periodontal pockets, which is not directly related to the issue of overhanging margins on restorations. Therefore, scaling is the most appropriate answer in this context.