There are remedies for permanent teeth loosening after knocking, and the treatment methods after loosening include resetting and fixing, adjusting occlusion and observing the state of pulp, as follows. 1. Repositioning and fixation: When a permanent tooth loosens after a knock, the tooth should be repositioned to its normal position in time and then fixed with a periodontal splint. 2. Adjustment of occlusion: loosening of permanent teeth after knocking may lead to early contact of the affected teeth, and the height of the affected teeth can be lowered appropriately to avoid re-injury of the affected teeth. 3. Observe the state of the pulp: the pulp of the permanent teeth may go into shock and lose its vitality temporarily after the impact, and it will recover gradually in the future, but pulp necrosis may also occur. Therefore, you should check the status of the pulp regularly and perform root canal therapy when the pulp becomes necrotic. It is recommended to go to the hospital in time to receive regular treatment.