I. Pain Pain mainly occurs when wearing the aligner for the first time and every time the force is adjusted. 5-6 hours after the first paste full orthodontic brackets, the teeth will be sore and painful symptoms, more obvious when biting and force, the next day to reach the peak, the next few days gradually weakened, adult patients pain will last longer, but generally will be in a week after the basic disappearance. After each subsequent follow-up, the same soreness and pain will be experienced on the same day or for a day or two, but not as severe as the first time. These are normal phenomena and should be treated correctly by the patient without undue stress. If the pain persists for more than a week or tends to increase, contact your doctor for help. There are also some patients with slow adaptation of the oral mucosa, often there will be lip and cheek mucosa and orthodontic appliances with friction discomfort, and even can have oral ulcers, at this time can use orthodontic protective wax applied to the orthodontic appliances, can effectively reduce the discomfort. Second, food selection Wearing orthodontic appliances patients need to eat a balanced diet and reduce snacking, strengthen nutrition, eat more tomatoes, oranges, liver, lean meat, eggs, milk and cereals, etc.. Do not chew food, avoid eating too sticky, too hard food, such as nuts, bones with meat, crabs, cow’s milk candy, milk candies, chewing gum, etc. Otherwise, fixed bands and brackets can fall off, wire deformation, thus destroying the force system of the aligner, loosening and abnormal displacement of teeth, which can lead to pulp necrosis and periodontal damage in serious cases, requiring re-bonding or fabrication of aligners and prolonging the treatment. The band ring or brackets should be contacted promptly for re-bonding after they fall out. Third, oral hygiene care Oral hygiene is particularly important for orthodontic patients. Brushing after each meal, flossing every day and regular dental check-ups can maintain the health of teeth. Make sure that you can brush your teeth for more than three minutes each time, and get into the habit of carrying toothpaste and toothbrush with you. After wearing orthodontic brackets, there will be a lot of objects added to the teeth, which will easily cause food impaction and lead to gingivitis and periodontitis. At this time it is necessary to use special tools, such as: orthodontic toothbrush, gap brush, dental floss, etc. If you have conditions, you can also choose water floss, flosser and other equipment to assist in cleaning some parts that are not easy to clean. It is recommended to carry oral cleaning appliances with you to help maintain a healthy and hygienic mouth. Oral hygiene is more difficult to clean after wearing orthodontic appliances, saliva secretion increases, and calculus is more likely to develop. For some patients, we will recommend fluoride anti-cavity treatment with the help of dentists. Fourth, the unexpected situation Sometimes the brackets fall off during the orthodontic process: generally the brackets will not fall off completely, just slide back and forth on the arch wire, but if it is the last brackets fall off, the brackets may also fall off completely, then you need to put away the fallen brackets and contact the doctor for re-pasting in time. However, sometimes the aligners fall off, which can cause digestive and respiratory tract injuries, and even life-threatening in serious cases, and should be prevented. Archwire sticking mouth: After the teeth are aligned, the archwire slips to the left and right to the extent that the side of the archwire is too long to stick the mouth, at this time, you can first use mucosal protection wax for protection to prevent the archwire from cutting through the mucosa and other soft tissues, and contact your doctor for help in time. Wire ligatures: Non-self-ligating brackets require the use of a ligature wire or ligature ring to connect the wire to the bracket. While using the ligature wire, the broken section of the wire may stick out due to chewing or other reasons and lacerate the mucosa and other soft tissues. Wash your hands, look into a mirror and press the broken section of the wire that sticks out back under the archwire. If this does not work, please seek help from your doctor after applying mucosal protection wax.