Relationship between skeletal malocclusion and dental anomalies in Nepalese population

Anjana Rajbhandari,Bashu Dev Pant,Manju Bajracharya,Resina Pradhan

doi:10.3126/ojn.v9i1.25684

Abstract

Introduction: Teeth eruption is important for the development of alveolar process which increases vertical height of the face and third molar is the last tooth to erupt in the oral cavity after birth. The aim of this study was to determine relationship between skeletal malocclusion and dental anomalies in Nepalese population. Materials & Method: A sample of 170 patients with agenesis of at least one third molar was divided into four groups according to the third-molar agenesis pattern. Panoramic radiographs, lateral cephalograph and cast models were used to determine the skeletal malocclusion and associated dental anomalies. The Pearson chi-square test was used for stastical analysis. Result: Among 170 patients more than half of the patients were female with the average age being 18.15 ± 3.64 years. Majority of the patients had Class I skeletal malocclusion followed by Class II and III but on group wise comparison of patients with different skeletal patterns Class I skeletal malocclusion had highest prevalence of dental anomalies followed by Class III and Class II malocclusion. Conclusion: Prevalence of third-molar agenesis was more in skeletal class I malocclusion followed by class II and III but skeletal Class I malocclusions had more dental anomalies followed by class III and class II malocclusion.

Highlights

Teeth eruption is important for the development of alveolar process which increases vertical height of the face and third molar is the last tooth to erupt in the oral cavity after birth
Ageneses do not appear in isolation,[4] they are usually associated with development anomalies such as delayed tooth formation, late exfoliation of deciduous teeth, retention of deciduous teeth, agenesis of other teeth, poor development of the alveolar bone and crownsize reduction, crown size reduction of the upper lateral incisors and second premolar
Variations in tooth morphology are associated with tooth agenesis, including reduced mesiodistal crown diameter and conical or tapered crowns.[8]

Summary

Introduction

Teeth eruption is important for the development of alveolar process which increases vertical height of the face and third molar is the last tooth to erupt in the oral cavity after birth. Majority of the patients had Class I skeletal malocclusion followed by Class II and III but on group wise comparison of patients with different skeletal patterns Class I skeletal malocclusion had highest prevalence of dental anomalies followed by Class III and Class II malocclusion. The third molar is a tooth that develops after birth and is the last tooth to erupt It has variability in the time of formation, varying crown and root morphology, and its varying presence or absence in the oral cavity.[7] Variations in tooth morphology are associated with tooth agenesis, including reduced mesiodistal crown diameter and conical or tapered crowns.[8] Corresponding contralateral teeth are often accompanied by imperfect morphologic formation.[9]

Objectives

Methods

Conclusion