The weeks case is a case of a supernumerary tooth in the molar region. Supernumerary teeth are frequently identified by the region of which they are found in the patients mouth. A supernumerary tooth in the anterior portion of a jaw is sometimes referred to as a mesiodens. A supernumerary tooth in the premolar region of a jaw is sometimes referred to as a peridens. And lastly, a supernumerary tooth in the molar region of a jaw is sometimes referred to as a distodens. This case is that of a distodens preventing the eruption of the third molar. Supernumerary teeth vary greatly in size from a very small tooth (aka microdont) to a normal size tooth. This one is a very small supernumerary tooth.
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