is a process in tooth development
in which the teeth
enter the mouth
and become visible. It is currently believed that the periodontal ligaments
play an important role in tooth eruption. The first human teeth
to appear, the deciduous teeth
(also known as baby or milk teeth), erupt into the mouth from around 6 months until 2 years of age. These teeth are the only ones in the mouth until a person is about 6 years old. At that time, the first permanent tooth
erupts and begins a time in which there is a combination of primary and permanent teeth. This stage, known as the mixed stage, lasts until the last primary tooth is lost. Then, the remaining permanent teeth erupt into the mouth.
Although researchers agree that tooth eruption is a complex process, there is little agreement on the identity of the mechanism that controls eruption.Riolo, Michael L. and James K. Avery. Essentials for Orthodontic Practice
. 1st edition. 2003. p. 142. ISBN 0-9720546-0-X. There have been many theories
over time that have been eventually disproven.Harris, Edward F. Craniofacial Growth and Development.
In the section titled "Tooth Eruption." 2002. pp. 1–3. One of the theories is that the tooth is pushed upward into the mouth by the growth of the tooth's root. Others advocated that a tooth is pushed upward by the growth of the bone around the tooth. In addition, some believed teeth were pushed upward by vascular... Read More