If it is caused by protruding teeth, it can be solved by orthodontics or wearing braces. Tooth extraction may be needed, the cycle of braces is about two years, and the maintenance stage after braces are removed takes one year or more, depending on the specific situation. The cost in Beijing is more than 10 thousand.

If it is caused by an exoskeleton, it may require surgery, that is, maxillofacial plastic surgery. Orthodontics is performed after the bones grow well, and the process will be longer and the cost will be higher.

I suggest you consult a regular dental institution first, and then make a reasonable plan!