Longterm posttreatment stabijity is great concern to ali orthodontist. So, this art cie was dscussed thct etiology of re!mse, ciassrfication of retention, cluratior, of retention and treat after relapse. The most important th.ng about stab) ty was considered that growth pattern, periocontal remocelurg, neuromuscular factors and applied the appropriate mechanotherapy. Retention was
considered during the treatment planning and required considerable analytic thought.
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