Tooth sensitivity after teeth straightening can be relieved by general treatment, desensitization treatment, laser treatment and other methods. 1. General treatment: keep your mouth clean, brush your teeth carefully every morning and evening, use fluoride toothpaste or mouthwash with anti-sensitivity function to clean your mouth, which can effectively alleviate the sensitivity symptoms, and minimize the consumption of acidic foods such as hawthorn and hard foods such as dried fruits to avoid damaging your teeth. 2. Desensitization treatment: local use of drugs such as silver fluoride, etc., to block the exposed dentin tubules, inhibit the flow of fluids or reduce the sensory nerve activity in order to alleviate the symptoms. 3. Laser treatment: laser can be used alone or with the use of fluoride, bonding agents and other desensitizing drugs to block the exposed dentin tubules to achieve desensitization. There may be other treatments for tooth sensitivity after teeth straightening, such as root canal treatment, etc. At the same time, periodontal diseases such as periodontitis need to be excluded, and it is recommended to standardize the treatment under the guidance of the doctor.