Did you know? The medical term used to depict the emergence of a tooth through the gums is "tooth eruption," while the medical term instead used to depict the loss of baby teeth is "tooth exfoliation."
Sometimes, baby teeth and permanent teeth mat be present side-by-side in which case the baby teeth are known as "retained" baby teeth. In the picture below, you can see an example of retained baby teeth. https://commons.wikimedia.org/wiki/File:Yorkie%27s_Retained_Deciduous_or_Baby_Fangs.jpg