What - Tooth abrasion is the wearing down of tooth enamel and structure usually seen near the gum line.
Over time, tooth abrasion can lead to tooth sensitivity, enamel loss, and increased susceptibility to decay.
Why - Tooth abrasion occurs primarily due to repeated mechanical friction on the tooth surface from brushing too hard, using abrasive toothpaste, or engaging in habits like using teeth as tools for tasks like tearing open packages.