The newly replaced incisors are much larger than the original milk teeth, and the color is yellow, which is very unpleasant to look at. This is because the new permanent teeth are large in size, while the child’s facial bones have not yet developed and increased, there is a phenomenon of incongruity between the permanent incisors and the face. With the increase in the age of the child, the facial jawbone also gradually developed, and the volume of teeth will not increase, the two will slowly tend to coordinate, to a certain age will not be ugly. Therefore, the newly replaced incisors are not a disease, just a temporary incongruity in the development process, parents do not have to worry about affecting the aesthetics, and do not need to treat. Often the childish little face, showing the newly replaced “big teeth” will look extra lively and cute it.