Ten-year-old children with teeth growing on the outside of the gums may be due to the ectopic eruption of permanent teeth caused by the untimely loss of milk teeth, which needs to be extracted and then consider orthodontics, and in the case of supernumerary teeth need to be extracted. 1. Ectopic eruption of permanent teeth. At the age of ten years old, the first two premolar teeth erupt, when the roots of their own milk teeth are not absorbed, can not fall off in time may affect the growth of permanent teeth, resulting in permanent teeth eruption from the neighboring gums, the need for timely extraction of milk teeth, to be fully erupted, if the teeth are not yet aligned, you need to consider orthodontic correction. 2. Multiple teeth. Ten-year-old children with teeth on the outside of the gums may also be the emergence of supernumerary teeth, after filming and examination to confirm, if the supernumerary teeth, need to remove the supernumerary teeth, to avoid causing malocclusion. Normal teeth usually erupt from the dental arch, when the teeth are found to erupt ectopically, it is recommended to seek medical treatment as soon as possible.