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

Overbite (Excessive) Horizontal

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.

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Participation Requirements

  • Sex:

    ALL

  • Eligible Ages:

    9 to 11

Participation 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.)

Study Location

University of Alberta
University of Alberta
Edmonton, Alberta
Canada

Contact Study Team

Primary Contact

Tarek El-Bialy

[email protected]
Study Sponsored By
University of Alberta
Participants Required
More Information
Study ID: NCT03286569