Orthodontic Treatment in Adolescents With Crowding and Displaced Teeth (CROWDIT)
Crowding, Tooth, Orthodontic
About this trial
This is an interventional treatment trial for Crowding, Tooth focused on measuring tooth alignment, function, adverse side effects, cost-effectiveness
Eligibility Criteria
The eligibility criteria were set as follows: Age at treatment start: 12-17 years Crowding and displaced teeth Maximum one cusp width deviation from normal sagittal relation Overbite ≥ 0 mm Normal or only dentoalveolar transversal discrepancy No missing permanent teeth up to first molars Treatment needed according to IOTN or ICON index and treated in accordance with the Swedish system of free child and youth dental care The exclusion criteria were set as: Skeletal anomalies Rheumatoid arthritis Previous orthodontic treatment Impacted teeth Ongoing sucking habits Previous trauma to teeth or jaws with subjective, clinical, or radiographic signs: periapical pathology; probing depth ≥ 5 mm at ≥ 4 surfaces of central incisors or first molars Visible plaque grade 3 Treatment plan including extractions or other appliances than fixed buccal appliances Communication difficulties.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Active Comparator
Active Comparator
Damon self-ligating brackets
Victory conventional brackets
A multi-centre two-arm parallel-group randomized controlled trial with a 1:1 allocation ratio, comparing/evaluating tooth alignment, function and adverse side effects, Patients' perception of pain, function and quality of life Cost-effectiveness for adolescents with crowding and displaced teeth treated with self-ligating (Damon).
A multi-centre two-arm parallel-group randomized controlled trial with a 1:1 allocation ratio, comparing/evaluating tooth alignment, function and adverse side effects, Patients' perception of pain, function and quality of life Cost-effectiveness for adolescents with crowding and displaced teeth treated with conventional brackets (Victory).