Eruption of primary and permanent dentitions

What is eruption of teeth? Eruption of teeth is the process by which developing teeth move through the jaw bones and overlying mucosa, to emerge in their respective place within the oral cavity eventually. Now, humans are diphyodonts, which means we have two sets of teeth during our lifetime. The first set, the primary teeth, also called deciduous teeth, or baby teeth, start erupting at around six months of age. And, by about six years of age, the primary teeth fall out and are replaced by a set of permanent teeth that stays with you for the rest of your life. Find our full video library only on Osmosis Prime: Join over 3 million current & future clinicians who learn by Osmosis, and over 130 universities around the world who partner with us to make medical and health education more engaging and efficient. We have unparalleled tools and materials to prepare you to succeed in school, on board exams, and as a future clinician. Sign up for a free trial at