Whether the tooth is vertically cracked in half can be filled, you need to go to the hospital to take pictures to check whether the root of the tooth is longitudinally cracked, if only the crown is cracked or part of the root of the tooth is longitudinally cracked, you can consider the root canal treatment and then fill or partially extracted, if the symptoms are serious, you need to extract the whole tooth. If the tooth is vertically cracked and only the crown is cracked, root canal treatment can be done followed by resin filling and then crown restoration. If most of the tooth root is fractured after taking X-ray, the remaining root can be preserved after partial extraction according to the situation. If the tooth is cracked and reaches the root area causing a complete longitudinal fracture of the root, or if the inflammation is severe and cannot be eliminated by root canal treatment, the tooth cannot be repaired and needs to be extracted.