The criteria should have the following elements.
①The size and shape of the teeth are normal. Alignment is neat.
② Upper and lower jaw teeth bite? The relationship between the upper and lower teeth is normal, the upper and lower teeth cusp sockets are opposite and in extensive contact, the overlap? (2) The upper and lower jaw teeth have normal occlusal relationship, the upper and lower teeth have opposite cusps and extensive contact, and the overlying teeth have normal coverage.
③The adjacent relationship of each tooth is normal, and the shape, length and width of the upper and lower dental arches are appropriate, and the midline is aligned.
④The size, morphology and mutual position relationship of the upper and lower jaws are normal. Zhang Shijie, Department of Prosthodontics and Orthodontics, Qilu Hospital, Shandong University
⑤ The development and function of facial and perioral muscles are normal.
⑥The structure and function of the temporomandibular joint are normal.
(7) The balance was achieved during the functional movement of the mandible? and orthognathic relationship when the mouth is closed.
⑧Facial morphology is symmetrical, coordinated and beautiful.
Normal? standard has a close relationship with orthodontic treatment, and it is the theoretical basis for orthodontists to diagnose and treat patients and evaluate the treatment effect.
At present, the standard for mis? The standard of orthodontic treatment for malocclusion is individual normal? , rather than the ideal normal? The overall goal of orthodontic treatment is balance, stability and aesthetics, which must be an organic combination of the three, one cannot be without the other.