After basic periodontal treatment, the inflammation of periodontal tissues has basically subsided, and the teeth are still loose and affect the chewing function, or the loose teeth have a tendency to worsen, then the loose teeth can be considered for fixation. The commonly used fixation method is to use glass fiber with high strength flowable resin to fix several adjacent teeth together. After fixation, the reserve function of periodontal membrane can be fully utilized, and multiple teeth can resist the occlusal force together, which is conducive to the recovery of periodontal tissues.