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.
Mentioned in ?
References in periodicals archive ?
1 Measuring arch length discrepancy in children and adolescent who are in the mixed dentition stage is challenging.
He presented in the early mixed dentition stage with unerupted/ missing upper left central incisor.
A considerable number of the children in the study group were over 9 years old and already were in the late 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.
The sample consisted of 54 Iraqi children aged 8-9 years at the mixed dentition stage.
A 13 years old female presented in the late mixed dentition stage with a Class II division 2 incisor relationship on a moderate Class II skeletal base with average vertical proportions.
The most common presentation is in the middle mixed dentition stage of development with second primary molars being more affected than the first primary molars [Biederman, 1962]; the mandible demonstrates a higher prevalence of ankylosed primary molars compared with the maxilla [Biederman, 1962].
Hence, the etiologic role of breathing pattern causing facial and dental alterations is as yet controversial, and most studies in that outlook are usually cross-sectional, with only few reports assessing mouth breathing as a long term habit in children at late mixed dentition stage.
This is because it erupts early in the mixed dentition stage, has many deep pits and fissures, and as it develops early its development can be interrupted by systemic conditions.
Rapid palatal expansion in mixed dentition stage with custom made modified expansion device.
3,4,6-9 Melo et al2 evaluated indica- tors of crowding in the primary dentition that may lead to future anterior crowding in the mixed dentition stage.