Maxillary deficiency in adults Oral Health
Conditions
Interventions
Sample size will be determined with sequential statistical analysis with the cut-off for subject recruitment at 36 months. Experience gained from conducting a previous study at the University of Alber
Sponsors
University of Alberta
Eligibility
Sex/Gender
All
Age
18 Years to 30 Years
Inclusion criteria
Inclusion criteria: 1. Requirement of maxillary expansion treatment for the groups 2. Need for post-expansion orthognathic surgery 3. Full permanent dentition erupted (except 3rd molars) 4. Treatment may involve post-expansion tooth extraction or not 5. No syndromic characteristics or systematic diseases clinically determined or based on previous records 6. Male and female aged 18-30 years
Exclusion criteria
Exclusion criteria: Patients with palates too narrow for placement of the expander appliance, with large tori and/or asymmetric (canted) maxillary palatal plane
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Skeletal and airway changes to measure expansion using cone-beam computed tomography (CBCT) images, dental scan, photos, airway measurements and questionnaires at baseline, 12 months, end of active treatment and end of retention at 2 years. Expansion is measured using CBCT images, and dental scans. Changes in nasal volume and shape obtained will be obtained from the CBCT images after applying the AVIZO software. Airway resistance and nasal peak airflow will be compared between groups and the association between airway resistance and nasal volume/shape is measured using CBCT and polysomnography. | — |
Secondary
| Measure | Time frame |
|---|---|
| Dental expansion changes measured using CBCT images, dental scans, photos, airway measures and questionnaires at baseline, 12 months, end of active treatment and end of retentions, questionnaires, etc. | — |
Countries
Canada
Outcome results
None listed