In this case, if the trauma is obvious, it is necessary to perform debridement and suture. If the wound is not obvious, you can rinse your mouth with normal saline or gentamicin saline without treatment. This is mucosal injury, which will soon heal. Don't worry. Pay attention to lip hygiene and don't bite with your teeth to avoid infection. Pay attention to rest, strengthen nutrition, drink more boiled water, eat more vegetables and fruits, and ban spicy food. I wish my child a speedy recovery!