A loose tooth cannot be fixed by gluing it to a neighboring tooth. Loose teeth should be treated according to the different causes of looseness. Common causes of loose teeth are periodontitis, trauma, apical inflammation and so on. 1. If the loose teeth caused by periodontitis, you should first treat the periodontal inflammation under the guidance of a professional doctor, as the inflammation subsides, the loose teeth will gradually restore their own firmness, there is no need for fixed treatment. 2. Trauma-induced loosening, if the degree of loosening is light, the root of the tooth is not much damage, you can observe for a period of time, the teeth will be restored to firm on their own, if the teeth by the impact of trauma is serious, there are teeth broken, you need to carry out dental fixation treatment, such as the choice of relying on the two neighboring teeth to do ceramic, but also the choice of the damage to the tooth site to directly remove the original teeth for dental implant treatment. 3. Periapical periodontitis will generally be untreated by dental caries gradually develop into periapical periodontitis, resulting in alveolar bone resorption around the root tip of the tooth, the tooth will be loose, which if you find that there are caries and other manifestations, be sure to carry out treatment as soon as possible, for the periapical periodontitis can be root canal treatment, after the elimination of the inflammation, the tooth will be gradually restored to firmness. There are other causes and treatments for loose teeth, so we recommend that you visit a dentist in time to find out the cause of the looseness and give targeted treatment.