Orthodontic treatment is usually not possible to straighten only one row of teeth, otherwise it may affect the bite, chewing, joints, etc. 1. Orthodontic treatment should not only take into account the position and shape of the teeth, but also the problem of occlusion. The teeth in the mouth are all upper and lower rows of teeth to form an occlusal relationship in order to perform chewing functions. 2. If only one row of teeth is corrected, then it may cause occlusal disorders, produce joint pain, affect the chewing function, and cause facial disharmony. Unless it is a very slight adjustment that does not affect the bite. 3. In general, for better occlusal relationship and orthodontic effect, it is still recommended to do full mouth orthodontics, and in extreme cases, single jaw orthodontics can also be done. It is recommended to consult a professional doctor whether the specific orthodontic treatment can correct only one row.