What does "attrition" refer to in dental terminology?

In dental terminology, "attrition" specifically refers to the wear that occurs on the surfaces of teeth as a result of normal activities like chewing. This process can gradually lead to a loss of tooth structure over time, particularly affecting the enamel and dentin layers. It is a natural consequence of the mechanical action of the teeth coming into contact with one another and is influenced by factors such as diet, occlusion, and personal habits.

The other choices depict different dental phenomena that are not related to the mechanical wear caused by chewing. Decay from acid describes the process of cavity formation due to bacterial acids; loss of enamel from brushing pertains to damage caused by aggressive or incorrect tooth brushing techniques; and inflammation of the gum refers to periodontal issues that involve the soft tissues around the teeth. Understanding attrition helps dental professionals provide better advice on oral health and preventive care strategies for patients.