The answer to the question of whether an adult needs orthodontic treatment is a matter of opinion. However, the issue of adult orthodontics cannot be as simple as children’s orthodontics in terms of starting point. When an adult decides to straighten their teeth, the amount of time it takes until the actual braces are placed varies from person to person; the reason for this is that in order to increase post-orthodontic stability, the dentist must address oral diseases such as tooth decay, periodontal disease, gingivitis, cysts, etc. in a comprehensive manner. Do I need to straighten my teeth? When an adult wants orthodontics, the dentist will usually spend an hour to an hour and a half educating him about the oral cavity; and whether a patient needs orthodontics or not, the dentist must collect the patient’s oral data before analyzing the pros and cons of orthodontics or not. The use of radiography is because the scope of orthodontics is in the third dimension, following the establishment of the physiological position of the jaw joint, the health of the neuromuscular group movement, the symmetry of the underlying bone, the balance between the size of the teeth and the underlying bone, the health of the individual teeth and the surrounding supporting tissues, the uprightness and parallelism of the tooth axis, the posterior tooth relationship, the canine tooth relationship, and the anterior tooth relationship. The establishment of the relationship. Patients sometimes ask the dentist to decide whether they need orthodontic treatment, but it is the doctor’s job to analyze the patient’s personal oral information alone, not to make decisions for the patient. When a person needs orthodontic treatment can be determined by whether it is affecting their daily life, their social life, or whether it is causing an obstacle. Take bad breath as an example, 85% of bad breath comes from tartar, calculus, tooth decay, periodontal disease, infection around wisdom teeth, loose and broken fillings of the tongue, unclean crowns, septic residue of teeth, smoking, smell of food, etc.; the other 15% is from nasal disease, lung, intestines, stomach, diabetes, kidney and other systemic diseases, so oral hygiene maintenance, regular maintenance and treatment can solve Most of the problems of bad breath. However, there is a causal relationship between the ease of oral hygiene maintenance and the neatness of tooth alignment. When the alignment of a person’s teeth is uneven, and other factors are the same, such as the length of time and method of brushing, and the degree of cleaning with a toothbrush is not as good as that of a person with straight teeth, the rate of dental related diseases increases. For dentists, adult orthodontics is not a separate course, today’s dental clinical orthodontic patients 30 to 50% of the age between 30 and 80 years old; orthodontics is no longer limited to aesthetics, but oral rehabilitation, the diagnosis of the overall treatment. In the overall treatment, the prevention and treatment of periodontal disease, treatment of the jaw joint, rehabilitation, dispersion of bite force, and preparation for dental implants must be taken into consideration; in addition, the static aspects such as appearance, mouth shape, and lip shape, dynamic aspects such as expression and smile, and psychological aspects such as personal confidence and social behavior are of great benefit to the patient. Orthodontic treatment for adults has become less painful, and orthodontic appliances are available in both metal and resin. The treatment is more efficient than ever before, the reduction in time is more desirable, and it also plays a more active role in the clinical rehabilitation of the oral cavity. In advanced societies such as Europe and the United States, adult orthodontics is a rite of passage and a focus on personal image, and the public has a common understanding that adult orthodontics is a common social behavior to change the quality of life. Orthodontics is a requirement of modern society for the public to pursue a refined quality of life, and the psycho-spiritual level is greater than the physical level, has become an inevitable trend, and is a problem that we must think about and face to solve.