Large gaps can be repaired, but there are specific problems that need to be analyzed, some parts are repairable and some parts are difficult to repair. For example, the most common case is the gap between the upper jaw, which is also known as the gap between the two incisors. If this gap is not particularly large, it can be repaired by applying a restoration method, in which a layer of resin is repaired in the near center of each of the two incisors, and then there will be no obvious gap. However, this restoration method has high adaptation requirements: 1, the gap cannot be too wide, too wide gap due to the restoration will look obviously unattractive, and it is easy to bite when the restoration falls off. 2, check whether there is the presence of multiple teeth in the upper jaw, there is a wide gap in the upper jaw due to the child’s multiple teeth, then the multiple teeth should be extracted, and then the gap should be repaired. However, if this is not the case and it is a wide gap between the back teeth or an excessively wide gap between the front teeth, orthodontic treatment is usually applied.