How should buck teeth be corrected? The etiology and pathogenesis of buck teeth are not clear, and there may be congenital genetic factors and acquired bad habits. The disease has obvious racial characteristics and family aggregation tendency; However, acquired bad habits, such as mouth breathing, tongue sticking, biting lower lip and adult sucking habits, may also be the cause of the disease. "Buckteeth" is essentially a maxillary protrusion or bimaxillary protrusion in medical specialty, which is generally not accompanied by serious dysfunction, but it affects the appearance very much. If this feature can be found in the early stage of growth and development, it can be treated by inducing development. Adults can only be treated by orthodontics and osteotomy. Both methods require partial tooth extraction.