Tooth, Supernumerary |
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| Teeth, Supernumerary; Fourth Molar; Fourth Molars; Molars, Fourth; Supernumerary Teeth; Supernumerary Tooth | |
| An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption. | |