ugly duckling stage

(redirected from Mixed Dentition Stage)
A stage of dental development in children that precedes the eruption of permanent canines, so called because the lateral incisors may be tipped laterally due to crowding by the unerupted canine crowns
This tipping may cause spacing of the incisor crowns despite crowding of the roots. The condition is often temporary and does not preclude normal dentition. The name is directly borrowed from Hans Christian Andersen’s allegorical fable of the same name

ugly duckling stage,

n a stage of dental development preceding the eruption of the permanent canines, in which the lateral incisors may be tipped laterally because of crowding by the unerupted canine crowns. This tipping may cause spacing of the incisor crowns despite the crowding of the roots. The condition may be transitory in an otherwise normal dentition. It occurs during the mixed dentition stage of the dentition.
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In addition, studying the caries experience of older children can be problematic because of their being in the mixed dentition stage.
If the answer is no, the alternative late treatment, commonly begun at the end of the mixed dentition stage and featuring E-space conservation and some sort of maxillary distalization, would seem to be in order.
A considerable number of the children in the study group were over 9 years old and already were in the late mixed dentition stage.