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

Last updated: November 3, 2024
Sponsor: University of Alberta
Overall Status: Active - Recruiting

Phase

N/A

Condition

N/A

Treatment

Upper arch Wilson quadhelex appliance

Clinical Study ID

NCT03286569
Pro00001731
  • Ages 9-11
  • All Genders
  • Accepts Healthy Volunteers

Study 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.

Eligibility Criteria

Inclusion

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 eruptingupper and lower permanent incisors)

Exclusion

Exclusion Criteria:

  1. Other orthodontic treatment provided

  2. Growth problems (craniofacial syndromes, etc.)

Study Design

Total Participants: 60
Treatment Group(s): 1
Primary Treatment: Upper arch Wilson quadhelex appliance
Phase:
Study Start date:
April 01, 2019
Estimated Completion Date:
February 01, 2026

Study 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.

Connect with a study center

  • University of Alberta

    Edmonton, Alberta T6G 2R3
    Canada

    Active - Recruiting

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