In recent years, with the change of people’s lifestyle, the development of transportation, and the diversification of children’s sports and games, coupled with the strong activity of children, who like to play and play, sports, often prone to accidents, such as collisions, falls. If the face hits the ground first, the teeth are easily injured, which leads to loose teeth, broken teeth, dislocation (teeth out of their normal position), etc. This is called dental trauma. According to scientific research, the restoration of function or the preservation of a dislocated tooth after a bruise is often closely related to whether the treatment is timely and correct. After a dental trauma, depending on the injury, a variety of conditions may occur, ranging from tooth pain and discomfort to injuries to the soft tissues of the mouth, or even resulting in fractures of the face, most of which can cause bleeding. In such cases, one should not panic and take appropriate measures depending on the situation. The following is a brief introduction to the treatment of various dental trauma. 1, no obvious changes after the tooth injury In this case, the child may not feel pain or slight discomfort, he should be instructed not to touch the injured tooth again and take it to the hospital to see a doctor. Because although there is no change in appearance, the tooth and its surrounding tissues may have been injured, including the deep blood vessels, not treated may lead to more serious consequences, bringing pain to the child. 2.Loose teeth When you find that your child’s injured tooth is loose, you should instruct him not to touch the injured tooth again, let alone eat with it. Go to the hospital as soon as possible to find a doctor to deal with it. The doctor will fix it according to the situation. 3, broken teeth With the current level of technology, some broken teeth can be re-stained. Parents should take their children to the doctor with the broken tooth for treatment. The broken tooth can be soaked in milk or saline. If a simple tooth is broken and the child does not experience pain in hot or cold or painful teeth when inhaling, the doctor can mostly bond the tooth back directly or repair the defect with dental materials; if the above situation occurs, it indicates that the broken part is too large and the pulp (dental nerve) has been affected, requiring more complex treatment, otherwise pulp necrosis may occur, leading to more serious consequences. 4, tooth displacement The tooth is displaced after the injury and is not in harmony with the adjacent teeth, which may be accompanied by bleeding, pain and loosening. The child should be taken to the hospital as soon as possible to restore the displaced tooth to its original position and to fix it. If the tooth is a baby tooth, you should also consider the impact on the permanent tooth germ below it, and you should not take it lightly. In this case, parents must remain calm and put the tooth into saline, milk or their own mouth, remember not to dry and save it, and not to wipe the root, and take the child to the hospital immediately, and the doctor will replant the tooth back. The shorter the time the tooth is out of the socket, the higher the success rate of replantation, and the best success rate of replantation is within 15-30 minutes. If it is not convenient to go to the hospital as soon as possible, parents can implant the tooth back into the child’s mouth with reference to the position of the next tooth, and then go to the hospital. If the tooth is stained, you can hold the crown of the tooth and rinse it with saline, milk or water before implanting it back into the mouth. Protecting teeth is of great importance, and healthy teeth play an important role in the normal growth and development of children and their quality of life in the future. So how can we prevent dental trauma? 1. Parents and children’s guardians need to be more responsible and not negligent. Teachers need to strengthen protective measures for children in sports activities to prevent accidents, and to promote traffic safety knowledge and obey traffic regulations. 2.According to what they know about dental trauma, they should educate children and improve their ability to help themselves. 3.When playing intense sports, such as boxing, sparring, baseball, soccer, basketball and other confrontational sports, wear a dental brace to protect the teeth.