Global distribution of malocclusion traits: A systematic review

Abstract

Objective: Considering that the available studies on prevalence of malocclusions are local or national-based, this study aimed to pool data to determine the distribution of malocclusion traits worldwide in mixed and permanent dentitions. Methods: An electronic search was conducted using PubMed, Embase and Google Scholar search engines, to retrieve data on malocclusion prevalence for both mixed and permanent dentitions, up to December 2016. Results: Out of 2,977 retrieved studies, 53 were included. In permanent dentition, the global distributions of Class I, Class II, and Class III malocclusion were 74.7% [31 - 97%], 19.56% [2 - 63%] and 5.93% [1 - 20%], respectively. In mixed dentition, the distributions of these malocclusions were 73% [40 - 96%], 23% [2 - 58%] and 4% [0.7 - 13%]. Regarding vertical malocclusions, the observed deep overbite and open bite were 21.98% and 4.93%, respectively. Posterior crossbite affected 9.39% of the sample. Africans showed the highest prevalence of Class I and open bite in permanent dentition (89% and 8%, respectively), and in mixed dentition (93% and 10%, respectively), while Caucasians showed the highest prevalence of Class II in permanent dentition (23%) and mixed dentition (26%). Class III malocclusion in mixed dentition was highly prevalent among Mongoloids. Conclusion: Worldwide, in mixed and permanent dentitions, Angle Class I malocclusion is more prevalent than Class II, specifically among Africans; the least prevalent was Class III, although higher among Mongoloids in mixed dentition. In vertical dimension, open bite was highest among Mongoloids in mixed dentition. Posterior crossbite was more prevalent in permanent dentition in Europe.

Association between constitution, axiography, analysis of dental casts, and postural control in women aged between 41 and 50 years

“…It should be mentioned, however, that the number of class III subjects was significantly smaller, which also reflects the current data with regard to the prevalence of malocclusions. [60] Crossbites and edge-to-edge bites were observed only in a small number of subjects. Although these malocclusions lead to forced bites and can, therefore, be associated with functional disorders [31], no significant correlations with postural control could be demonstrated in this study.…”

Association of the P561T and C422F polymorphisms of the growth hormone receptor gene with facial dimensions.

“…[4][5][6] The prevalence of class III malocclusion is reported to be high in Asians and relatively lower in Caucasians. 7,8 Based on a recent meta-analysis, the prevalence of class III malocclusion in Iranian children is 6.01%. 9…”

Behandlung von Klasse-II-Malokklusionen von Extraktion bis Distalisation

“…Die Therapie der Klasse-II-Malokklusion nimmt in unserem Kulturkreis einen Großteil der täglichen Arbeit ein, da hier besonders viele Patienten diese Art der Malokklusion aufweisen [1]. Es gibt zahlreiche Therapiekonzepte, die speziell für die Korrektur von Klasse-II-Malokklusionen entwickelt wurden.…”