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BMC Oral Health
Published in: BMC Oral Health 1/2015

Open Access 01-12-2015 | Research article

Is arch form influenced by sagittal molar relationship or Bolton tooth-size discrepancy?

Authors: Abdullah M. Aldrees, Abdulmajeed M. Al-Shujaa, Mohammad A. Alqahtani, Ali S. Aljhani

Published in: BMC Oral Health | Issue 1/2015

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Abstract

Background

Orthodontic patients show high prevalence of tooth-size discrepancy. This study investigates the possible association between arch form, clinically significant tooth-size discrepancy, and sagittal molar relationship.

Methods

Pretreatment orthodontic casts of 230 Saudi patients were classified into one of three arch form types (tapered, ovoid, and square) using digitally scanned images of the mandibular arches. Bolton ratio was calculated, sagittal molar relationship was defined according to Angle classification, and correlations were analyzed using ANOVA, chi-square, and t-tests.

Results

No single arch form was significantly more common than the others. Furthermore, no association was observed between the presence of significant Bolton discrepancy and the sagittal molar relationship or arch form. Overall Bolton discrepancy is significantly more prevalent in males.

Conclusions

Arch form in a Saudi patient group is independent of gender, sagittal molar relationship, and Bolton discrepancy.
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Metadata
Title
Is arch form influenced by sagittal molar relationship or Bolton tooth-size discrepancy?
Authors
Abdullah M. Aldrees
Abdulmajeed M. Al-Shujaa
Mohammad A. Alqahtani
Ali S. Aljhani
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2015
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/s12903-015-0062-2

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