Mesiodistal axial teeth angulations of permanent anterior teeth using postero–anterior cephalometric radiograph

Abstract

The present study aimed to determine the mesiodistal axial angulations of upper and lower permanent anterior teeth in young Iraqi adults having normal occlusion using postero-anterior cephalograph. Also to detect the sex difference in the mesiodistal axial angulations of such teeth. The sample consisted of 33 young Iraqi adult students, 17 males and 16 females aged 20-23 years old who were having Class I normal occlusion. Postero-anterior cephalograph was taken for each subject and was traced to determine the mesiodistal axial angulation of upper and lower permanent anterior teeth. The results revealed that the mean values of mesiodistal axial teeth angulations in both sexes showed very limited variation. No significant bilateral differences were found for right and left sides for both jaws (for males, females and total sample). From the above results, it could be concluded that no significant bilateral differences in mesiodistal axial tooth angulations were found for both jaws, for total sample and for both sexes. Also, male-female comparison showed no significant difference in mesiodistal axial teeth angulations and for both jaws.

A Comparative Computed Tomographic Evaluation of Expression of Angulation and Inclination in Self Ligating Brackets

“…Ursi et al [30] postulated that the inclination of the upper teeth might be registered in relation to the line passing through the most inferior points of the right and left orbits. Hamdany [31] have used the line joining the midpoint of the overlap of the mesiobuccal cusp of the upper and lower first molars bilaterally as the occlusal plane. Cattaneo et al [25] have assessed the labiolingual inclinations by modifying the Bjork "occlusal line inferior."…”