Root Shortening With Three Methods of Upper Front Teeth Retraction (NCT07744685) | Clinical Trial Compass
CompletedNot Applicable
Root Shortening With Three Methods of Upper Front Teeth Retraction
Syria60 participantsStarted 2025-07-02
Plain-language summary
External apical root resorption is a possible side effect of fixed orthodontic treatment, particularly in the upper front teeth. This randomized clinical trial was conducted to compare the amount and timing of root resorption associated with three different methods of retracting the upper anterior teeth using miniscrew anchorage. Sixty adult patients with Class II Division 1 malocclusion who required extraction of the upper first premolars were randomly allocated to one of three groups: a bidimensional bracket group, a hybrid dual-section archwire group, or a conventional sliding mechanics group. In all groups, the six upper anterior teeth were retracted together with the support of orthodontic miniscrews. Panoramic radiographs were obtained before treatment, after completion of leveling and alignment, and after completion of en-masse retraction. Root and crown lengths were measured on these radiographs to estimate external apical root resorption during the leveling and alignment phase, during the retraction phase, and over the complete observation period. The study also compared the pattern of resorption among the upper canines, lateral incisors, and central incisors.
Who can participate
Age range
18 Years – 30 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Adults aged 18-30 years.
* Class II Division 1 dental malocclusion according to Angle classification
* Mild-to-moderate skeletal Class II discrepancy, with an ANB angle greater than 4° and not exceeding 7°.
* Overjet ranging from 5 to 9 mm.
* Presence of all six maxillary anterior teeth.
* Maxillary anterior teeth fully erupted and with complete root formation.
Exclusion Criteria:
* Patients with previous orthodontic treatment.
* Missing permanent maxillary teeth.
* Active periodontal disease.
* History of trauma to any maxillary anterior tooth.
* Previous endodontic treatment of any maxillary anterior tooth.
* Periapical pathology involving any maxillary anterior tooth.
* Extensive coronal restorations that could interfere with crown-length measurement.
* Radiographic evidence of pre-existing root resorption before orthodontic treatment.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
External Apical Root Resorption of the Maxillary Anterior Teeth
Timeframe: Time 0: before the initiation of orthodontic treatment; Time 1: after the leveling and alignment stage, which occurs within an average of four months, Time Final: after the en-masse retraction stage, which occurs wihtin an averag 12 months.