Patient: Description (onset, main symptoms, hospital visited, etc.): I am 21 years old and my upper and lower teeth are protruding from the bed, which is fine when viewed from the front, but the whole mouth is protruding when viewed from the side. How long will the teeth last? How much time will the treatment take and how much will it cost? I heard that you are an expert in this field, can you give me a treatment plan, thank you! Waiting for your answer. Yan Congqing, Department of Stomatology, Shanghai Ruijin Hospital: Hello! Protrusion of the dental bed can be divided into dental protrusion, alveolar protrusion, and bony protrusion. Except for bony protrusion which requires surgery, the other two types of protrusion can be improved by orthodontic treatment. The doctor will determine which one you belong to after the examination. Dr. Shen Guofang is a specialist in orthognathic surgery and we recommend consulting with him if you need surgery.