Children with large gaps in their incisors may be suffering from multiple teeth, caries and other diseases, but also may be caused by loose teeth. 1. Multiple teeth: Multiple teeth are usually due to the influence of parental genetic factors, resulting in the presence of 1 to 2 multiple teeth under the child’s teeth, causing pressure on the incisors, forming a wedge-shaped gap, so that the gap between the incisors become larger. 2. Dental caries: If the child’s teeth are usually not cleaned in place, it may lead to the accumulation of germs in the oral cavity for a long time, caries-causing bacteria in the plaque metabolism of dietary sugar or carbohydrates to generate lactic acid-based organic acids, resulting in the apatite structure of the teeth demineralization and dissolution, leading to dental caries, resulting in caries, so that the child’s incisors gap becomes larger. 3. Loose teeth: If the child often bites hard objects with the incisors, it may lead to over-absorption of the tooth roots, loosening of the teeth, resulting in a larger gap. Secondly, loose teeth can also be caused by periodontitis, pulpitis and other diseases. If your child has a large gap between his or her incisors, it is recommended that you take him or her to the hospital for a checkup to determine the cause of the problem, and then treat him or her accordingly.