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ISSN 2007-462X (Print)
Organo de divulgación Científica de la Unidad Académica de Odontología de la Universidad Autónoma de Nayarit (UAN)

2018, Number 19

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Rev Tame 2018; 6.7 (19)

Componentes de la maloclusión clase II esquelética en niños mexicanos de 8 a 12 años

Del Real VM, Becerra SJE, Rivas GR, Aguilar OS

Language: Spanish
References: 30
Page: 708-711
PDF size: 335.42 Kb.


ABSTRACT

Class II malocclusion represents a common challenge for orthodontists. It is related to a variety of configurations, such as facial structure, maxilla and mandible, patterns of growth and development. Methodology: The design of this study was descriptive, transversal and not experimental. The universe used was 516 cases with study models and lateral radiography of the skull, pretreatment of the clinical file of the Specialty in Orthodontics of the Autonomous University of Nayarit. 57 cases of patients met the inclusion criteria. In accordance with the rules established by Ricketts, the anteroposterior positions of the maxilla and mandible were determined, as well as the facial biotype with the Vert index. Fisher's Exact Test was performed with the SAS® University Edition online program to relate the subdivisions of Class II malocclusion with maxillary responsiveness and facial biotype. Also with this test, comparisons were made with the results of similar studies.Results: The skeletal class II was determined by the mandibular retroposition in 43% of the cases of subdivision 1 and 71% of the subdivision 2. While the cases given by a combination of the position of both jaws were 39 % and 21% respectively. There were few cases where class II was due to the anterior position of the maxilla. In both groups the neutral growth type predominated, although in the group of class II subdivision 1 the percentage of vertical growers is higher than those of the group of class II subdivision 2. Conclusions: In both subdivisions of class II the mandible is usually in retroposition. The predominant facial biotype in both groups is mesofacial.


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