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International journal of odontostomatology

versión On-line ISSN 0718-381X

Resumen

VERGARA, Alberto D.; LLINAS, Humberto J.  y  BUSTILLO, José M.. Incidence of Lower Anterior Third Molars on Dental Crowding. A New Approach. Int. J. Odontostomat. [online]. 2017, vol.11, n.3, pp.327-332. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2017000300327.

This paper main objective is to estimate the level of association between lower anterior crowding and the presence of lower third molars on study models and panoramic dental radiographs of patients treated by the Orthodontics Postgraduate Students at the Dentistry Faculty at the University of Cartagena (Cartagena de Indias, Colombia) and also other dental and radiographs care centers in Cartagena de Indias. It was made using a cross-sectional study at the Dentistry Faculty at the University of Cartagena and others dental care centers in the city. There were 366 study models and panoramic dental radiographs selected by strict inclusion/exclusion criteria for patients. An instrument that includes age, gender, presence or absence of third molars, position of third molars according to Winter’s classification, stage of formation of the third molars according to Nolla’s classification, and crowding magnitude according to Harfin’s classification was used. Data were analyzed based on frequency distributions and proportions; inferential analysis was performed through proportional odds model using the software package IBM SPSS Statistics v23. It was found that the patients with Nolla 6 from the right side are more likely to have mild-moderate crowding magnitude than patients with Nolla 10 on that same side. In conclusion, this research provides as main result the implication of the eruption of the lower third molars and particularly those erupting in mesioangular and horizontal positions in the anterior crowding (AA).

Palabras clave : crowding; molar third; malocclusion; orthodontics; proportional odds model.

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