Relación de la maloclusión de Clase II subdivisión 1 con la longitud anteroposterior de las vías aéreas altas

This research project aimed to analyze the relationship between class II malocclusion subdivision 1 with the anteroposterior length of the upper airways by means of the cephalometric analysis of lateral skull radiographs of Digital X radiological center. The population consisted of 412 lateral radiographs of skull, of which 100 were selected by means of non-probabilistic sampling. These ones were subjected to the cephalometric analyzes of Steiner and Ricketts for the determination of the skeletal class and the type of malocclusion. According to the result, the radiographs were assigned to one of the five groups of malocclusions studied. The analysis of Mc. Namara measuring the anteroposterior length of nasopharynx and oropharynx was used. for the evaluation of the upper airways. It was observed that in the radiographs of patients of class II subdivision 1 there was a decrease in the anteroposterior length of the nasopharynx with average values of 11.63 mm for men and women 11.68 mm; as regards the oropharynx 10 mm in men and 8.36 mm in women, with respect to standard deviation attributed by Mc. Namara 17.4 mm for nasopharynx and 14.3 mm for oropharynx. The group with the greatest similarity was class I with biprotrusion, however the values found corresponded to the standard deviation, while the groups of class I, class II subdivision 2 and class III were within the normal ranges.

• Main Author: María Fernanda, Calderón Monar (author)
• Format: bachelorThesis
• Language: spa
• Published: 2019
• Subjects: Vías aéreas altas; Estrechez de vías aéreas; clase II; subdivisión 1
• Online Access: http://dspace.unach.edu.ec/handle/51000/6062