If the incisors are concave, it depends on whether the incisors are ingrown or have no or insufficient protrusion, whether the teeth are concave or whether the jawbone is concave as well. If the jawbone is concave and the teeth are also concave, it is likely that the incisors are ingrown or the bones are underdeveloped. If the teeth alone are concave and the bone development is normal, only orthodontic treatment with fixed braces can correct the problem. If there is a problem with the bone development, because of the poor bone development caused by the teeth in the concave, may need to stimulate a little, if the young to stimulate the bone development, if the older may not be too good solution. Whether the teeth are concave, or both teeth and bones are concave, the solution may not be the same, but the teeth alone are concave through orthodontic effect should be better. If there is a problem with the bone, it may be a little more troublesome, or the effect is not ideal, it is recommended to go to the hospital doctor after examination to give a different solution.