If a loose tooth is found, it is important to first check what disease is causing it and to take different treatments for different diseases. In the first case, there is a possibility of chronic periapical inflammation of the tooth. When an abscess or a cyst is formed in the apical part of the root, the tooth will be loose, and this time, if you want to treat it, you should first perform root canal treatment on the tooth. In the case of larger cysts, surgical treatment of the jaw bone is also required. Secondly, there is a possibility of periodontitis, in the advanced stage of periodontitis, the root of the tooth is exposed and the tooth becomes loose, if it reaches the third degree of looseness, it needs to be extracted, and after three months of extraction, dental veneer restoration is performed. If it is within the second degree, you can consider periodontal system treatment first, and after the inflammation is under control, the loose tooth will be fixed periodontally. Thirdly, it may be caused by trauma, and an x-ray will be taken to see if there is a fractured root. If the root is fractured, the tooth may need to be extracted; if the root is not fractured, the tooth needs to be fixed.