The gum tissue, or gingiva, is anchored to the underlying alveolar bone and is designed to form a tight seal around each tooth. When repeated mechanical forces or bacterial inflammation damage this tissue over time, the gum margin gradually moves toward the root. Studies show that up to 88% of adults over age 65 have recession affecting at least one tooth, but the process often begins in younger adults. According to the American Academy of Periodontology, early intervention significantly improves long-term outcomes for gingival recession.
Aggressive horizontal brushing with stiff bristles is one of the most common mechanical causes. Each brushing stroke applies lateral abrasive force at the gum margin, slowly wearing the tissue away from the root surface over months and years. Patients who brush vigorously often believe they are doing their teeth a favor, yet the cumulative trauma leads to measurable recession.
Chronic periodontal disease compounds the problem through a different pathway: bacterial biofilm triggers an inflammatory response that breaks down the connective tissue and bone supporting the gum. As supporting structures are lost, the gum line collapses, deepening pockets and accelerating further tissue loss in a self-reinforcing cycle.
