NCT03286569

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

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 60 (estimated)
• Sponsor: University of Alberta · Academic / Other
• Sex: All
• Age: 9 Years – 11 Years
• Healthy volunteers: Accepted

Summary

Young children with backward positioned lower jaw/chin will be recruited to have an upper jaw expansion appliance. Previous research showed that the use of similar appliances can lead to lower jaw forward growth. 60 young children aged 9-11 will be recruited to have either active or non-active Wilson type upper arch expansion appliance. Patients will have special x-ray (Cone Beam computed tomography) before and after treatment (after 9 months) of starting the treatment. After participation, routine orthodontic treatment will be continued.

Detailed description

Previous research showed that the use of upper jaw expansion appliances can lead to lower jaw forward growth (1). 60 young children aged 9-11 with backward positioned lower jaw/chin will be recruited to have either active or non-active Wilson type upper arch expansion appliance. Patients will have special x-ray (Cone Beam computed tomography) before and after treatment (after 9 months) of starting the treatment. After participation, routine orthodontic treatment will be continued.

Conditions

• Overbite (Excessive) Horizontal

Interventions

Type	Name	Description
DEVICE	Upper arch Wilson quadhelex appliance	Upper arch Wilson quadhelex appliance

Timeline

• Start date: 2019-04-01
• Primary completion: 2027-02-01
• Completion: 2027-02-01
• First posted: 2017-09-18
• Last updated: 2026-01-07

Locations

1 site across 1 country: Canada

Regulatory

• FDA-regulated device study