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Late discovery and location of unerupted supplemental premolars--at what age to screen?

The high prevalence of anomalies of number or form of teeth supports the principle that the developing dentition should be screened radiographically at least once. However, there is considerable controversy, as to when and how to screen, and increasing concern about risks from unnecessary radiation. This study presents a case of late discovery of supplemental premolars in a 14-year-old boy. Screening would have detected the supplementary teeth earlier; however, management of the patient would not have been significantly affected.

Adolescent↗

The teeth.

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Amelogenesis Imperfecta↗

[Cleidocranial dysplasia--histological findings in the dental cementum].

Up to now only very few reports on histological studies of teeth in cleidocranial dysplasia have been published. We are presenting a 12-year old boy with this syndrome. Seven of his teeth were studied microscopically. The most relevant results are as follows: acellular cementum in all teeth, almost complete missing of cellular cementum, normal intermediate cementum. The pathogenesis of the retarded eruption of teeth in this disorder is explained as a result of eburnation of the alveolar bone as well as fibrosis of the gingiva. The therapy of choice in order to stimulate eruption is a rigid orthodontic treatment of the impacted teeth using fixed appliances.

Child↗

Maxillary anterior displacement and impaction in the mixed dentition.

Attention has been given to problems of eruption in the maxillary anterior region. It is a region where a variety of anomalies occur. Since the maxillary anterior region influences appearance so greatly, early detection of difficulties and careful planning and treatment can be extremely beneficial to patients.

Child↗