I am Dr. Wang Xi, former deputy chief physician of Orthodontics Department of Tianjin Medical University. At present, an orthodontic clinic is opened near Wangdingdi. You can go first. I'll take a look at it for you. 022-23670977. The large gap between teeth can be corrected by cosmetic restoration of anterior teeth, which depends on the protrusion of dental arch and the fullness of lips.