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CC BY-NC-ND 4.0 · European Journal of General Dentistry 2017; 6(01): 65-68
DOI: 10.4103/2278-9626.198622
Short Communication

Distribution of hypodontia and hyperdontia in concomitant hypo-hyperdontia patients: Critical appraisal of the published data

Yong Chen
Department of Orthodontics, Xiamen Dental Hospital, Xiamen City, India
,
Sreekanth Kumar Mallineni
2   Department of Pedodontics and Preventive Dentistry, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
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Abstract

Aim: Distribution of hypodontia and hyperdontia in the reported concomitant hypo-hyperdontia (CHH) patients. Materials and Methods: An extensive search of the reported literature from January 1966 to December 2015 was conducted using the “EmBase,” “Google Scholar,” “Medline,” and “PubMed” databases. The search words used were “agenesis,” “concomitant,” “hypodontia,” “hyperdontia,” “hypo-hyperdontia” “concomitant hypo-hyperdontia” and “supernumerary teeth” in different combinations. The citation lists from the included references were subsequently examined, and a hand search was performed in an attempt to find additional data. Detailed analyses of the incidence of hyperdontia and tooth type of hypodontia were evaluated to determine the occurrence of hypodontia and hyperdontia in this condition. Descriptive statistics were carried out using a Chi-square test to determine the occurrence of hypodontia and hyperdontia in CHH, the value of P < 0.05 was considered statistically significant. Results: Overall, 103 individuals were reported on CHH in published English literature. The average age of them was 11.29 years and frequently observed in males (P < 0.05). Overall 63% of teeth were missing in all the cases that were reported on CHH, whereas 37% of supernumerary teeth were documented (P < 0.05). Most of the cases involved are an anterior region of the both arches (57%). Second premolars are the most commonly missing teeth in both maxillary and mandibular arches, and maxillary mesiodens (50%) are frequent supernumeraries in CHH patients. Conclusion: Hypodontia is more common in CHH patients than hyperdontia. Second premolars are the commonly missing teeth while maxillary mesiodens are the frequently reported in CHH patients. Posterior CHH has not been reported.

Keywords

Hyperdontia - hypodontia - hypo-hyperdontia - supernumerary teeth


Publikationsverlauf

Artikel online veröffentlicht:
01. November 2021

© 2017. European Journal of General Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/.)

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