Which of the following actions can lead to abrasion of enamel?

Aggressive brushing can lead to abrasion of enamel because it involves applying excessive force or using a technique that is too harsh for the delicate surfaces of teeth. The enamel is the hard outer layer that protects the tooth, but it can be worn away by vigorous brushing, particularly if a hard-bristled toothbrush is used or if the bristles are applied at a steep angle. Over time, this can lead to enamel thinning, increased sensitivity, and even an elevated risk of cavities.

The other options provided do not result in enamel abrasion. Healthy chewing habits promote effective dental health without causing damage, using a soft toothbrush is advised to minimize enamel wear, and regular dental cleanings help maintain dental health without abrasive effects.