<abstract xmlns="http://www.w3.org/1999/xhtml"><sec><h3>Background</h3><p>The aim of the present study was to assess sexual dimorphism related to occlusal variables recorded from dental casts of Australian twins and to compare trends across primary (T1), mixed (T2) and permanent (T3) dentitions in the same individuals.</p></sec><sec><h3>Methods</h3><p>The sample comprised 22 males and 25 females selected at random from monozygotic pairs and 19 males and 19 females from dizygotic pairs. Overjet, overbite, midline deviation, midline diastema, primary and permanent molar relationship, and primary and permanent canine relationships were measured in millimetres using a digital calliper</p></sec><sec><h3>Results</h3><p>The mean values for overjet in males in the permanent dentition and for overbite in the mixed and permanent dentitions were significantly greater than those for females. The other occlusal traits showed no sexual dimorphism. Midline diastemata were most prevalent in the primary dentition while coincident midlines were most prevalent at all stages for both genders. In addition, a mesial step deciduous molar relationship was more prevalent on the right side and a flush terminal plane present on the left. Furthermore, a Class II permanent molar relationship was predominant in T1/T2, while a Class I relationship was most prevalent in the permanent dentition. Class II primary and permanent canine relationships were most common at all stages</p></sec><sec><h3>Conclusions</h3><p>Significant sexual dimorphism was found for overjet and overbite at several occlusal developmental stages but sexual dimorphism was not found for the other occlusal traits studied</p></sec></abstract>

BackgroundThe aim of the present study was to assess sexual dimorphism related to occlusal variables recorded from dental casts of Australian twins and to compare trends across primary (T1), mixed (T2) and permanent (T3) dentitions in the same individuals.MethodsThe sample comprised 22 males and 25 females selected at random from monozygotic pairs and 19 males and 19 females from dizygotic pairs. Overjet, overbite, midline deviation, midline diastema, primary and permanent molar relationship, and primary and permanent canine relationships were measured in millimetres using a digital calliperResultsThe mean values for overjet in males in the permanent dentition and for overbite in the mixed and permanent dentitions were significantly greater than those for females. The other occlusal traits showed no sexual dimorphism. Midline diastemata were most prevalent in the primary dentition while coincident midlines were most prevalent at all stages for both genders. In addition, a mesial step deciduous molar relationship was more prevalent on the right side and a flush terminal plane present on the left. Furthermore, a Class II permanent molar relationship was predominant in T1/T2, while a Class I relationship was most prevalent in the permanent dentition. Class II primary and permanent canine relationships were most common at all stagesConclusionsSignificant sexual dimorphism was found for overjet and overbite at several occlusal developmental stages but sexual dimorphism was not found for the other occlusal traits studied

Sexual dimorphism related to occlusal traits in Australian children

Research Unit of Oral Health Sciences, Medical Faculty, University of Oulu

Australasian Orthodontic Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Sexual dimorphism related to occlusal traits in Australian children"}

BackgroundThe aim of the present study was to assess sexual dimorphism related to occlusal variables recorded from dental casts of Australian twins and to...

Sexual dimorphism related to occlusal traits in Australian children

Published Online: Jul 20, 2021

Page range: 36 - 44

Received: Sep 01, 2017

Accepted: Jan 01, 2018

DOI: https://doi.org/10.21307/aoj-2020-057

© 2018 Daniela C. Ribeiro et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.