Which statement best describes the primary objective of prophylaxis with respect to plaque and calculus?

• A. Remove supra-gingival plaque and calculus.
• B. Eliminate all bacteria from mouth.
• C. Perforate enamel to create roughness.
• D. Remove only calculus below the gumline.

Answer: (B)

The main idea is to reduce disease risk by cleaning away the biofilm and deposits that irritate the tissues. In prophylaxis, you don’t sterilize the mouth—bacteria are a normal part of the oral environment—so the goal isn’t to eliminate all bacteria. Instead, you aim to disrupt and remove the plaque biofilm and calculus that accumulate on tooth surfaces, especially above the gumline, because these deposits drive gingival inflammation and caries. Therefore, removing supra-gingival plaque and calculus best captures the primary objective. The other options describe actions that are either harmful, incorrect in scope, or impossible (eliminating all bacteria, creating deliberate enamel roughness, or cleaning only below the gumline).