When the face is crooked due to misaligned teeth, treatment measures such as implant restoration, wearing fixed or invisible orthodontic appliances and orthodontic treatment can be taken respectively, as follows: First, when missing teeth cause poor occlusal relationship of a few teeth and form a sideways chewing habit, implant restoration or fixed denture restoration can be taken to establish a balance (dentition), and after correcting the chewing habit, both sides of the face can achieve symmetry. Second, in the case of serious dental crowding, misalignment, accompanied by a crooked midline, wisdom teeth and bicuspids can be extracted and fixed or invisible orthodontic appliances can be worn. After aligning the teeth, level the dental arch, align the midline, and make the upper and lower teeth establish cusp sockets and relative even contact occlusion relationship. Third, when congenital developmental malformation causes crooked face and misaligned bite, in addition to orthodontic treatment, orthognathic surgery will be performed.