Some children have a large gap in the central front teeth, which is not only unsightly, but also has problems such as "air leakage" when talking and easy to bite when eating. What is the reason and what can be done to correct it? The width of incisors is mostly formed in children's tooth changing period, which is generally caused by the following reasons: Low labial frenum attachment is the common reason for the wide gap between central incisors. The labial frenum is quite thick during the embryonic period, and the baby will gradually retract after birth. If the baby does not shrink back, the adhesion between gums is too low, and the gap between upper incisors will be too wide. Coping method: Please ask the doctor to cut off the attachment of labial frenum in time under local anesthesia, and the two central incisors will gradually move to the center automatically. There are many deciduous incisors falling off, and it is rare for a child to have permanent teeth. After four deciduous incisors fall off, only two permanent incisors grow, which is easy to cause a gap between the two central incisors. How to deal with it: If this is the case, don't worry. When the lateral incisors gradually grow out, the long axis direction of the two central incisors will change and approach each other, and the gap between the two teeth will naturally disappear gradually. Normally, everyone has 28 to 32 permanent teeth. However, some children often grow one or two deformed teeth on the labial, medial or palatal side of the upper incisors, which seriously affects the growth and arrangement of normal permanent teeth and leads to the widening of the upper incisors. Coping methods: Parents are advised to take their children to stomatological hospital in time and remove supernumerary teeth as soon as possible. "Hidden disease", displaced teeth, because the displaced teeth are "hidden" between the front teeth, resulting in the gap between the upper front teeth is too wide. Coping methods: X-ray should be used to check whether there are any abnormal phenomena in the jaw, such as odontoma, embedded displaced teeth or supernumerary teeth. If there is any abnormality, you should operate in time. It is worth noting that parents should not use rubber bands to pull their front teeth to the middle. Once the force is too strong, it will cause tooth damage or even loose and fall off.