Proper dietary choices: Those who have had orthodontic treatment should be aware that foods that are hard or sticky can damage the archwires and delay treatment and need to be avoided. For example, the following foods: 1, popcorn, nuts, ice, hard candy, potato chips, preserves, whole ears of corn, as well as chewing gum, toffee and other sticky candy. 2. Be careful when eating carrots, apples, and hard bread. It is best to cut these foods into small pieces, and drinks with high sugar content can cause long-term damage to your teeth. Brushing: Remember to brush your teeth after three meals, if you can’t do it at least twice a day for at least two minutes each time, with fluoride anti-bacterial toothpaste, which can effectively inhibit the accumulation of plaque. 1. Clean all pressed surfaces of all teeth, and finally clean the biting surfaces of teeth. Let the toothbrush stay on each tooth surface for a few seconds before moving to the next position. Clean from one area to another according to the natural curve of the gums; 2. Clean the brackets by holding the bristles perpendicular to the tooth surface; 3. Clean the gaps between the brackets, archwires and gums; 4. Flossing: Flossing helps to prevent cavity formation and remove plaque or food residue in time when it is inconvenient to brush your teeth. 1.With the help of floss threader (the kind of floss with hard end), put the floss under the arch wire, so that the two ends of the floss are about equal length; 2.Pull the floss down with both hands, and pull the two ends of the floss to the same direction when it is close to the gum, so that it is C-shaped; 3.Make sure that the floss enters under the gum margin and moves up and down. After cleaning, pull out the floss, taking care not to go too fast to avoid loosening the aligner. 4. Clean one by one in the same way, including the back teeth; 5. Gums may bleed during the first week of flossing until the plaque layer is cracked and the bacteria are driven away. Don’t worry, this is normal. Getting into the habit of flossing daily will help you have healthy teeth for life. Mouthwash: Mouthwash is also one of the daily care steps to kill the bacteria that cause plaque and bad breath, and it doesn’t have the burning sensation that alcohol does