Study the Effect of Upper Expansion Appliances on Lower Jaw Forward Projection/Growth
Trial Snapshot
- Phase
- Not Applicable
- Status
- Recruiting
- Sponsor
- University of Alberta
- Enrollment
- 60
- Locations
- 1
- Primary Endpoint
- Lower jaw projection
Study Overview
Brief 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.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Single Group
- Primary Purpose
- Treatment
- Masking
- Double (Participant, Outcomes Assessor)
Eligibility Criteria
- Ages
- 9 Years to 11 Years (Child)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Class II skeletal due to lower jaw backward projection
- •Class II malocclusion
- •Early mixed dentition (all first permanent molars erupted, as well as all erupting upper and lower permanent incisors)
Exclusion Criteria
- •Other orthodontic treatment provided
- •Growth problems (craniofacial syndromes, etc.)
Arms & Interventions
Active upper Wilson appliance
Active upper arch Wilson quadhelex appliance
Intervention: Upper arch Wilson quadhelex appliance (Device)
Non active upper expansion appliance
Non-Active upper arch Wilson quadhelex appliance
Intervention: Upper arch Wilson quadhelex appliance (Device)
Outcomes
Primary Outcomes
Lower jaw projection
Time Frame: 9 months
Lower jaw projection will be evaluated by computed tomography.
Lower jaw size
Time Frame: 9 months
Lower jaw size will be evaluated by computed tomography.
Secondary Outcomes
- Base of skull bone position(9 months)
- Jaw joint size(9 months)
- Jaw joint position(9 months)
- Base of skull bone size(9 months)