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Related Experiment Video

Updated: Jun 10, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

An orthodontic oral appliance.

Marie Marklund¹, Per Erik Legrell

¹Department of Orthodontics, Umeå University, Umeå, Sweden. Marie.Marklund@odont.umu.se

The Angle Orthodontist

|August 4, 2010

Summary

Orthodontic oral appliances (OAs) may prevent overjet reduction in sleep apnea patients. Specifically designed OAs increased overjet, unlike standard OAs, suggesting a benefit for bite health.

Area of Science:

Dentistry
Orthodontics
Sleep Medicine

Background:

Oral appliances (OAs) are used for sleep apnea treatment.
Some OAs may negatively impact overjet.
Orthodontic OAs are designed to counteract specific forces.

Purpose of the Study:

To test if orthodontic oral appliances (OAs) can prevent overjet reduction.
To evaluate the effect of OAs on upper incisor forces and overjet.

Main Methods:

Pilot study with 30 patients randomized to OAs or orthodontic OAs.
Bite changes assessed via casts, radiographs, and questionnaires.
Follow-up after a mean of 2.4 years in 19 frequent users.

Main Results:

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The Establishment of a Murine Maxillary Orthodontic Model

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Last Updated: Jun 10, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

The Establishment of a Murine Maxillary Orthodontic Model

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Four of nine patients (44%) using orthodontic OAs showed an overjet increase (>=0.4 mm).

None of the 10 patients using standard OAs experienced an overjet increase.

Orthodontic OAs uniquely affected overjet in this cohort.

Conclusions:

Orthodontic OAs, unlike standard OAs, can increase overjet.
This specific OA design may benefit patients concerned about bite changes during treatment.
Further research is warranted to confirm these findings in larger populations.