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Updated: May 12, 2026

Measuring the Complete-arch Distortion of an Optical Dental Impression

Measuring the Complete-arch Distortion of an Optical Dental Impression

Published on: May 30, 2019

Intra-arch widths: a meta-analysis.

Luca Lombardo¹, Silvia Setti, Camilla Molinari

¹Postgraduate school of Orthodontics, University of Ferrara, via Montebello, 31, Ferrara 44100, Italy. lulombardo@tiscali.it

International Orthodontics

|April 6, 2013

Summary

This summary is machine-generated.

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This study found minimal differences in arch width across different malocclusion classes, with notable exceptions in mandibular inter-canine and maxillary inter-premolar widths between Class I and Class II patients.

Area of Science:

Orthodontics
Dental Morphology
Craniofacial Analysis

Background:

Understanding intra-arch distances is crucial for diagnosing and treating malocclusions.
Variations in arch dimensions can influence treatment planning and outcomes.

Purpose of the Study:

To compare mean intra-arch distances in patients with Class I, Class II division 1, and Class II division 2 malocclusions.
To identify statistically significant differences in arch dimensions between these orthodontic classes.

Main Methods:

Systematic literature search of PubMed, Embrace, and Cochrane databases.
Inclusion of studies published within the last 10 years.
Analysis of adult subjects with complete permanent dentition and no prior orthodontic treatment.

Related Experiment Videos

Last Updated: May 12, 2026

Measuring the Complete-arch Distortion of an Optical Dental Impression

Measuring the Complete-arch Distortion of an Optical Dental Impression

Published on: May 30, 2019

Main Results:

Mandibular inter-canine distance was smaller in Class I compared to Class II division 1.
Maxillary inter-premolar width was greater in Class I than in Class II division 1.
Most other measured arch distances showed no significant differences between the analyzed classes.

Conclusions:

Overall, arch width differences between Class I, Class II division 1, and Class II division 2 malocclusions are not statistically significant.
Exceptions include smaller mandibular inter-canine width in Class I and smaller maxillary inter-premolar width in Class II division 1 compared to Class I.