Anodontia refers to a lack of tooth development and usually does not occur in the deciduous dentition. The teeth most often affected are the third molars, the second premolars, and the lateral incisors.
Hypodontia refers to the lack of development of one or more teeth. Hyperdontia refers to an increase in the number of teeth and occurs more frequently in the permanent dentition. Most hyperdontia occurs in the maxilla and specifically the anterior region.
Dental transposition refers to normal teeth erupting in an inappropriate position.
Hyperdontia refers to additional teeth as stated above and mesiodens fall into this definition. The number of those affected with hyperdontia is approximately 0.15% to 3.9% of the population. Most supernumerary teeth occur in the maxillary arch, they occur unilaterally, and over half are found in the anterior region. It is not uncommon to find other supernumerary teeth within the same patient, and there may also be other craniofacial anomalies as well. Russell and Folwarczna (2003) distinguished between the types of mesiodentes such as rudimentary (defined as those occurring in the permanent dentition), primary (those occurring as supplementary), and those according to morphology such as conical, tuberculate or molarform.
Anodontia refers to a lack of tooth development and usually does not occur in the deciduous dentition. The teeth most often affected are the third molars, the second premolars, and the lateral incisors.Hypodontia refers to the lack of development of one or more teeth. Hyperdontia refers to an increase in the number of teeth and occurs more frequently in the permanent dentition. Most hyperdontia occurs in the maxilla and specifically the anterior region.Dental transposition refers to normal teeth erupting in an inappropriate position.Hyperdontia refers to additional teeth as stated above and mesiodens fall into this definition. The number of those affected with hyperdontia is approximately 0.15% to 3.9% of the population. Most supernumerary teeth occur in the maxillary arch, they occur unilaterally, and over half are found in the anterior region. It is not uncommon to find other supernumerary teeth within the same patient, and there may also be other craniofacial anomalies as well. Russell and Folwarczna (2003) distinguished between the types of mesiodentes such as rudimentary (defined as those occurring in the permanent dentition), primary (those occurring as supplementary), and those according to morphology such as conical, tuberculate or molarform.
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