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Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Nov;106(5):e24-30. doi: 10.1016/j.tripleo.2008.07.012. Epub 2008 Sep 20.

Hypohyperdontia: literature review and report of seven cases.

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Paediatric Dentistry, Faculty of Dentistry, University of Hong Kong, Hong Kong, China.


Hypodontia in combination with hyperdontia (hypohyperdontia) is a condition of mixed numeric variation in the human dentition. A comprehensive review on the hypohyperdontia literatures reported prevalence ranges from 0.002% to 3.1%. Our seven cases of hypohyperdontia involved both the maxillary and the mandibular arches. A traditional narrative review is included to describe the prevalence, etiology, and previously reported cases on hypohyperdontia. Furthermore, we opine that comprehensive clinical and radiographic examinations are essential for recognizing such rare dental anomalies. Judicious use of radiographs not only enhances the detection of hypohyperdontia, but also leads to changes in the course of management.

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