First, let him face the mirror and you stand behind him, holding his chin with one hand while helping him brush his teeth with the other. If he can hold the toothbrush, let him brush it by himself, you need to observe and correct his skills. If he does not know how to spit, it is difficult to rinse his mouth after brushing. You can put on a mouthwash shoulder to prevent him from getting wet and prepare plain water for him to rinse his mouth. When he needs to rinse his mouth, teach him to open his mouth and then pour the water into his mouth slowly and let the water flow out of his mouth naturally, which will help him wash away the toothpaste bubbles in his mouth. Swallow toothpaste while brushing Use only a green bean-like amount of toothpaste each time you brush your teeth, even if you accidentally swallow it, it will not cause any harm to your body. Fluoride is effective in preventing tooth decay and strengthening teeth, so you must brush your teeth with fluoride toothpaste. If you are worried that the concentration of fluoride in toothpaste is too high, you can use a children’s toothpaste with half the concentration of fluoride. Unconscious head wobbling You can stand behind him, put one hand around his head, and gently hold his chin to hold his head in place. But remember to do this only if he is willing, otherwise he will resist brushing and flossing. Sticking his tongue out often hinders brushing. Sticking out his tongue during brushing is a natural reaction. You can tell him to relax and then put the toothbrush in his mouth to clean while his tongue is softening. The time to soften his tongue is very short, so you need to position the bristles accurately and brush faster to make him feel more comfortable. You can also consider using an electric toothbrush to shorten the brushing time, but you must be careful and use the right method to avoid eroding the teeth and hurting the gums. Bite down on the toothbrush from time to time Use some auxiliary objects (e.g. roll several chopsticks together with a towel) and ask him to bite down on one side of his teeth so that his mouth will open naturally and you can then stick the toothbrush into your child’s mouth and brush the other side of his teeth. Lack of patience You can start with the easiest area to brush, i.e. the outer side first, so that he can brush the outer side even if he is biting lightly. Next, ask him to open his mouth and brush the chewing surfaces and the inner surfaces of the upper row of teeth. Finally, brush the inner side of the lower row of teeth. Resist brushing Find out why he does not want to brush his teeth and then help him with the reasons. If brushing makes him uncomfortable, it may be due to inflammation of the gums, so he may become more sensitive. If he feels uncomfortable, ask him to raise his hand to signal that he should stop brushing and let him take a break. Do not force him to brush his entire set of teeth, otherwise it will be more difficult to change his perception of brushing in the future. You can use a toothbrush with a smaller head to brush his teeth. When brushing the large molars, try to avoid putting the toothbrush too far back and only brush the last tooth to avoid making him feel uncomfortable and want to vomit. If there are sensitive areas that make him feel like vomiting when brushing, then you should leave those areas until last. If the teeth are unevenly aligned and difficult to clean, choose a toothbrush with a small head and pay attention to the unevenly aligned teeth to make sure the bristles can reach the teeth and gum edges to get a clean brush.