Children with severe tooth decay pain may need fillings, root canal treatment, extraction treatment, etc. It is recommended to go to Children’s Dentistry in time for examination and treatment. 1. If children’s tooth decay is painful with hot and cold stimulation and can be relieved quickly after removing the pain, it may be deep caries, and the decayed part can be removed and filled with cushion to repair the tooth cavity. 2. If the pain from hot and cold stimulation is severe and persistent, and there are symptoms of pulpitis such as night pain, the pulp can be opened for root canal treatment. Root canal treatment can also be done for pain caused by apical abscess. If the root resorption of milk teeth is heavy and pulpitis occurs, you can choose to extract them, and if the permanent teeth cannot erupt in a short period of time, you can make a gap retainer to wait for the eruption of permanent teeth.