Association between agenesis and root morphology of anterior teeth

Rodrigo Borali,Carolina Carmo De Menezes,Viviane Veroni Degan,Silvia Amélia Scudeler Vedovello,Giovana Cherubini Venezian

doi:10.1590/1807-2577.09119

Rodrigo Borali, Carolina Carmo De Menezes + Show 3 more

Open Access

https://doi.org/10.1590/1807-2577.09119

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Abstract

Abstract Introduction Tooth agenesis is likely to affect the root teeth and should be considerated in orthodontic tratament. Objective The aim of this study was to assess the association between agenesis and root morphology of anterior teeth. Material and method The anterior teeth of 51 individuals were evaluated on 102 periapical radiographs and then divided into three groups: Group 1 (n=16) – no tooth agenesis; Group 2 (n=17) – only third molar agenesis; and Group 3 (n=18) – tooth agenesis of premolars or lateral incisors. Root morphology of anterior teeth was evaluated and the roots were classified as short, blunt, apically bent, and pipette-shaped. Fisher’s exact test was used to compare root shapes, the chi-square test was used to obtain the distribution of sexes between the groups, and ANOVA was performed to compare the ages between the groups. The significance level was set at 5% for all analyses. Result There was significant difference in root shapes (P<0.05) between the groups. Blunt roots were the most prevalent in all groups, but their rate was higher in Group 3 (83%). Conclusion There was association between agenesis and root morphology of anterior teeth.

Highlights

Tooth agenesis is likely to affect the root teeth and should be considerated in orthodontic tratament
Its heterogeneous characteristics are apparently associated with other dental changes[1]
The etiology of tooth agenesis involves mutations in certain genes such as MSX1 and PAX9, and genes such as WNT10A appear to play an important role in odontogenesis[2,3,4]

Summary

Introduction

Tooth agenesis is likely to affect the root teeth and should be considerated in orthodontic tratament. Root morphology of anterior teeth was evaluated and the roots were classified as short, blunt, apically bent, and pipette-shaped. Tooth agenesis is likely to affect other teeth in the same individual and has been associated with various other dental changes, such as microdontia, differences in tooth calcification and eruption, reduction in size and change in crown shape of the remaining teeth[5,6,7,8,9,10,11,12,13,14,15,16]

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