The word grin was used to describe a lady in ancient times. Now, people's ideas have changed, and they no longer think that a girl is a lady without grinning. However, although you can show your teeth, it is not elegant to smile or even show your gums. People call this kind of smile that shows the gums a grin. Those who demand a high quality of life don't want their smile to be a grin. Fortunately, there is a way to correct it now. The causes of gingival smile may be tooth deformity, maxillary protrusion, nasal and labial muscle problems and so on. For gingival smile caused by tooth deformity, you need to find a dentist for orthodontic treatment. Treatment usually takes several months to a year. Gingival smile caused by nasolabial groove muscle factors can be treated by plastic surgeons, and the state of related muscles can be improved through surgery, thus correcting gingival smile. If it is caused by maxillary protrusion, it will be more troublesome to treat. Because this is caused by jaw deformity, it is necessary to carry out jaw plastic surgery, which is traumatic and difficult. Patients should consider it well when deciding whether to operate. Once you decide to do it, you must go to a reputable plastic surgery institution to find an experienced doctor for surgery.