A new method to measure mesiodistal angulation and faciolingual inclination of each whole tooth with volumetric cone-beam computed tomography images

Retrospective study on the angle of the upper permanent second molars in schoolchildren with normal occlusion

“…In the vast majority of cases, the second molars receive little attention on the part of the orthodontist [3][4] , which can be verified by the lack of studies on this theme in the literature, particularly in terms of angulation. Historically, it was Andrews 5 who evaluated more than 100 individuals with a natural and seemingly perfect occlusion, with regards to angle, inclination, prominence, width and length of each tooth crown.…”

“…However, in order to develop a prescription that can position the teeth closer to the normal natural, studies are needed on the position and angle that are deemed normal [3][4] .…”

Correlation Between Transverse Maxillary Discrepancy And The Inclination Of First Permanent Molars. A Pilot Study

“…In severe transverse discrepancies, attempting to normalize the inclination of molars increases the risks of root fenestration and the loss in insertion becomes clinically evident. 9 With respect to molars inclination, this study established angles based on cone beam tomography images, similar to those obtained by Tong et al (2012), who validated a method for determining buccolingual inclination based on tomographic images. 17 The present study evaluated the inclination of molars taking the occlusal plane (OP) as a reference point, as reported in other studies that used tomography to evaluate the inclination of molars, taking the OP as a reference as well.…”

“…9 Con respecto a la inclinación de los molares, en este estudio se establecieron los ángulos a partir de imágenes de tomografía de haz de cono, similar a las obtenidas en el estudio de Tong et al (2012), en el que los investigadores validaron un método para determinar la inclinación bucolingual a partir de imágenes tomográficas. 17 En el presente estudio se evaluó la inclinación de los molares tomando como punto de referencia el plano oclusal (PO), similar a lo reportado en otros estudios que utilizaron la tomografía para evaluar la inclinación de los molares y también tomaron el PO como referencia. 17 Nuestros resultados mostraron que la inclinación promedio del primer molar superior derecho fue de 80,00 ± 7,11º, 18 A similarity may be established, especially in terms of mandibular molars, and some difference in the maxillary molars, which can be explained by variability in growth patterns.…”

“…17 En el presente estudio se evaluó la inclinación de los molares tomando como punto de referencia el plano oclusal (PO), similar a lo reportado en otros estudios que utilizaron la tomografía para evaluar la inclinación de los molares y también tomaron el PO como referencia. 17 Nuestros resultados mostraron que la inclinación promedio del primer molar superior derecho fue de 80,00 ± 7,11º, 18 A similarity may be established, especially in terms of mandibular molars, and some difference in the maxillary molars, which can be explained by variability in growth patterns. 19 Finally, the correlation analyzed in this study showed that no significant relationships were found in evaluating overall discrepancies, but in grouping them according to whether the discrepancy (it is, the difference between transverse mandibular and maxillary length) is greater than 5 mm (positive) or shorter than 5 mm (negative), the study did find correlations with the inclination of both upper and lower molars, suggesting different behaviors in both groups.…”