Loose teeth in adults can be caused by tooth damage or dental or periodontal disease. According to different causes, corresponding treatment can be carried out. 1. Dental injuries: If the teeth are loose due to bumping and trauma, the teeth can be cemented, and the loose teeth will improve after a period of time when the tissues are repaired. 2. Periodontal disease: If the tooth loosening is caused by disease, such as: periodontitis, etc., you should seek medical treatment for the disease, such as periodontal scaling, scraping, etc., after the disease is cured, the loosening of the teeth can be improved. 3 gum recession: If the gums recede due to ageing, loose teeth occur under normal physiological conditions, should try to avoid chewing hard food with loose teeth, also minimize the consumption of stimulating food, pay attention to oral hygiene. 4. Periapical periodontitis: Periapical periodontitis is a further development of pulpitis, which can also lead to tooth loosening, and periapical periodontitis requires root canal treatment to cure. Once the tooth loosening occurs, you should seek immediate medical treatment under the guidance of the doctor.