Anterior teeth to open and close very much affect the person's facial appearance and even the pronunciation will be influential, with the development of oral technology, opening and closing of the front teeth can also be corrected, the front teeth opening and closing the main cause of genetic factors, pathology or functional factors, airway blockage, as well as bad habits.
The scope of opening and closing of the front teeth have a little big. Some only opens and closing of the front teeth and some posterior teeth partial opening and closing, some before and after the teeth are the opening and closing. Severe full mouth, only the last molar occlusal contact. Obtuse mandibular angle, on the lower lip often can not be closed, affecting the facial appearance and even lead to periodontal and upper respiratory tract infections. Recommended reading: the opening and closing of the front teeth treatment
Anterior teeth opening and closing of the formation mechanism is different for different appliance design.