Study the Effect of Upper Expansion Appliances on Lower Jaw Forward Projection/Growth

Launched by UNIVERSITY OF ALBERTA · Sep 13, 2017

Keywords

ClinConnect Summary

This clinical trial is investigating how an upper jaw expansion appliance can help young children with an overbite caused by a backward-positioned lower jaw. Researchers believe that using this type of appliance may encourage the lower jaw to grow forward, improving the child's bite and overall dental alignment. The study will involve 60 children aged 9 to 11, who will either receive an active treatment or a non-active version of the appliance. Participants will have special x-rays taken before and after the 9-month treatment period to see how their jaw growth changes.

To be eligible for this trial, children should have a specific type of jaw alignment issue called Class II skeletal malocclusion, which means their lower jaw is positioned further back than normal. They should also be in the early mixed dentition stage, meaning they have some adult teeth and some baby teeth. However, children who are currently receiving other orthodontic treatments or have certain growth disorders will not be eligible to participate. After the trial, children will continue with their regular orthodontic care as needed.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Class II skeletal due to lower jaw backward projection
• • 2. Class II malocclusion
• • 3. Early mixed dentition (all first permanent molars erupted, as well as all erupting upper and lower permanent incisors)
• Exclusion Criteria:
• • 1. Other orthodontic treatment provided
• • 2. Growth problems (craniofacial syndromes, etc.)