What is an adverse effect of nonselective polishing?

• A. Whitening
• B. No harm
• C. Strengthening enamel
• D. Removal of excessive tooth enamel, creating sensitivity or damage

Answer: (D)

Nonselective polishing uses abrasive agents that don’t distinguish between stain and healthy tooth structure, so they can wear away the outer enamel. This thinning or removal of enamel can expose underlying dentin, leading to sensitivity and potential damage with future tooth wear. Whitening or strengthening enamel aren’t the adverse outcome here, and saying there’s no harm isn’t accurate. Thus, the best match is the removal of excessive enamel that creates sensitivity or damage.