Dental trauma is a relatively common oral disease. It refers to the tooth body, dental pulp and periodontal tissue damage caused by sudden external force or impact, chewing gravel or metal foreign objects, or even biting cutlery by mistake. In severe cases, multiple teeth are traumatized at the same time, often accompanied by fractures of the alveolar process, and fractures of the maxilla and mandible can be caused by excessive force or falls on the jaws. If a tooth is not examined and treated in time after trauma, it can cause tooth discoloration, loosening, displacement or even loss. With the accelerated pace of modern life, outdoor activities inevitably bump into each other, so the number of cases of dental trauma is gradually increasing, the elderly should pay sufficient attention to the case of dental trauma. There are three main types of dental injuries: concussion, fracture and displacement. Concussions can be mild or severe and mainly affect the periodontium and pulp. In mild cases, the clinical symptoms are usually insignificant or only mild and easily recovered. In some patients, discoloration of the affected tooth, pulp necrosis, calcification, and root resorption may occur only after a year or several years. Therefore, if you encounter dental trauma, you should go to the hospital as early as possible to check whether it causes tooth fracture and eliminate occlusal trauma; usually pay attention to reduce or avoid adverse hot, cold and mechanical stimulation. Regularly go to the hospital for review to find out the problem in time. Teeth are composed of three types of hard tissues: enamel, dentin and bone. Trauma-induced tooth fracture can occur in just a portion of the middle of these three structures, or in more than two. This requires different treatment depending on the situation. In mild cases, only a small piece of enamel is damaged and can be left untreated or filled with resin material to restore the shape. If the pulp is injured, it needs to be protected immediately or even removed for root canal treatment. If the root is injured, the tooth will need to be fixed after root canal treatment or extracted, depending on the site of fracture. If the trauma causes a tooth to be displaced or even the entire tooth to be extracted, the patient’s treatment at the time will have a significant impact on the healing of the affected tooth. After the tooth is completely removed, it should be placed in saline, if possible, to avoid contaminating the root. Milk and cool boiled water can also be used as storage solution. In an emergency, the dislocated tooth can be placed under the patient’s tongue and stored temporarily before going to the hospital for further treatment. Patients should never wrap the affected tooth with toilet paper, let alone scrubbing the root, as this can easily cause contamination and affect the viability of the tooth. The treatment of traumatic tooth injury requires a combination of oral surgery, dentistry, periodontics, prosthetics, orthodontics and other dental specialties to maximize tooth preservation, protect function, preserve pulp and ensure aesthetics. Improper treatment will result in permanent loss of teeth or missing teeth. The aim of treatment is first and foremost to preserve the tooth and to keep it as alive as possible. Prevention of dental trauma is also extremely important and requires raising awareness of the risk of dental trauma, avoiding traffic accidents, and guarding against trauma in sports. This is especially true for the elderly, who, as they age, become progressively less supple, sensitive, and coordinated, and their bones become lax, so they need to be especially careful when going out and playing sports. To sum up, patients should go to the hospital as soon as they encounter dental trauma so as not to affect the dental treatment.