The difference between bony and dental protrusion is mainly reflected in the different symptoms and treatment, as follows: 1, the symptoms are different: dental protrusion is mostly manifested by the upper and lower front teeth of the long axis of the tooth body is obviously labially inclined, showing the appearance of open lips and teeth, the clinical crown is long, and the alveolar bone is more normally developed. The bony anterior protrusion is mostly manifested by the upright or slightly labial inclination of the front teeth on the line, the alveolar bone is excessively full, the lateral observation shows that the lips are short, usually unable to cover the front teeth. 2, the treatment is different: dental anterior protrusion after the removal of wisdom teeth and bicuspid teeth, can wear orthodontic appliance traction teeth to move to the far middle, leveling the dental arch, inwardly retracted front teeth can be improved. The bony protrusion needs to be combined with jaw surgery to remove the excess bone in order to completely improve the protrusion and form a straight face.