There is generally no harm in wearing braces for teeth grinding, but a few people may experience tooth damage, tooth pigmentation or have obvious sensory abnormalities. 1. Tooth damage: the grinding process is likely to affect the surrounding teeth, and in serious cases, it may harm the abutment teeth, which may cause tooth loss. 2. Teeth pigmentation: After grinding teeth, if you choose to wear metal braces, the metal will dissolve in the saliva environment, which will easily lead to darkening of the gum roots, leaving pigmentation and affecting the aesthetics. 3. Abnormal sensation: After grinding the teeth to make the spacing between the teeth become smaller, and then wear braces, there may be abnormal sensation, which will affect the bite in serious cases. If you wear braces after grinding your teeth, it is recommended that you consult a doctor in a timely manner and have your teeth treated under the guidance of a professional doctor.