Inclination of the inferior incisive with respect to the biotype facial in lateral cephalic radiographs in patients from 8 to 20 years of age in the city of Cuenca- Ecuador, during the period April - June 2021

Abstract

The lower central incisors (ICI) play a significant role in dental occlusion because their inclination in the lower arch is essential for diagnosis and treatment planning since, they determine stability, masticatory function, harmony, and facial balance. Objective: To relate the inclination of the lower incisor with respect to the facial biotype in lateral cephalic radiographs in patients from 8 to 20 years of age in the city of Cuenca, Ecuador, during the period April-June 2021. Materials and Methods: Descriptive, documentary, and retrospective study. The sample consisted of 390 lateral skull radiographs according to the inclusion and exclusion criteria. Ricketts cephalometric analysis was used to identify the facial biotype and ICI inclination and Steiner cephalometry to obtain the skeletal class. Results: the relationship between ICI inclination and facial biotype is not statistically significant (p<0.05) (r= -0.054). However, the study shows that the female sex presents a higher frequency, especially at 16 years of age. In terms of prevalence, the dolichofacial biotype is representative in 41.5%, as well as skeletal class I in 48.9% and normal inclination in 52.8%. Conclusion: It was determined that, according to the population studied, the ICI was not related to the facial biotype.