If there is another tooth on top of the tooth, it may be a retained milk tooth or a supernumerary tooth, etc. Depending on the situation, you may choose to have the tooth extracted or orthodontically corrected. 1. Extraction: When the milk teeth do not fall out and the permanent teeth erupt, which is manifested as another tooth growing on top of the tooth, the retained milk teeth will be extracted in time to avoid the wrong eruption of the permanent teeth. 2. Orthodontics: If a tooth grows on top of the tooth, it may be a supernumerary tooth, in which case the supernumerary tooth will be extracted first, and then the other teeth will be orthodontically corrected, so that the teeth in the whole mouth will restore the normal occlusal relationship. If you have a tooth on top of your tooth, do not blindly handle it by yourself, go to the hospital in time to take a surface tomography film to determine whether it is a baby tooth stagnation or a supernumerary tooth, listen to the professional doctor’s advice, and take the best treatment program to avoid the teeth from malocclusion and so on.