Two-year-old baby knocked out half of his incisors, the knocked out incisors are the so-called milk teeth, which will be replaced by permanent teeth at the age of about six, so parents do not need to worry too much. However, parents should not ignore the loss, but should take their baby to a pediatric dentist for professional treatment. If the baby has lost only a small part of the tooth, the doctor will give it a filling treatment to replenish the missing part to achieve the normal chewing relationship of the child. If the baby has knocked out a large part of the tooth and the pulp has been exposed, professional root canal treatment will be required. The treatment is carried out painlessly and the baby will not experience any pain. After the root canal filling is performed, the defective area needs to be replaced so that the baby can chew normally and facilitate the normal eruption of its lower permanent teeth.