Publicación: Dimensiones del arco inferior en niños con mordida abierta anterior y niños con sobremordida vertical normal
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The size of the dental arches is influenced by genetic and environmental factors when considered as dynamic structures Objective: to determine the dimensions of the lower arch in children between 8 and 16 years of age with Anterior Open Bite (MAA) and Normal Vertical Overbite ( SNV), without the presence of oral habits. Methods: Analytical cross-sectional study in 132 subjects with MAA and 132 with SVN, aged between 8 and 16 years, selected from public schools. Intercanine width, arc length, intermolar and interpremolar distance, perimeter and length of the lower arch were measured in previously digitized models by the GOM's inspection program with the use of a 3D optical scanner. Results: The subjects with MAA had smaller statistically significant dimensions in the intercanine distance (p = 0.024) 95% CI (0.01, 0.02) and intermolar (p = 0.000) CI 95% (-1.76; -0 , 53) and non-significant differences in the perimeter (p = 0.239) 95% CI (-1.57, 0.39) with the Mann-Whitney U test. Conclusions: the size of the lower arch was lower in subjects with MAA, which may be associated with functional alterations that must be confirmed in future studies.