Evaluation of Root Resorption Following Different Mandibular Incisors Intrusive Mechanics

Study Overview
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Brief Summary
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Evaluation of root resorption following different mandibular incisors intrusive mechanics : A randomized clinical trial

Official Title
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Evaluation of Root Resorption Following Different Mandibular Incisors Intrusive Mechanics : A Randomized Clinical Trial

Conditions
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Orthodontic Tooth Movement, Intrusion of Tooth, Resorption, Root

Intervention / Treatment
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* Other: Mini-screw
* Other: Utility arch
* Other: Nitinol reverse curve wire


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient will be included in this study if has: An age range between 12 and 16 years. Deep overbite with excessive curve of Spee of more than 5mm Over erupted lower incisors. Permanent teeth are all present (except for third molar). No previous orthodontic treatment. No indications or symptoms of periodontal disease in the past or present, as determined by clinical and radiographic examination Exclusion Criteria: Patients who needed surgery to fix skeletal problems. Any previous trauma or root canal therapy Missing lower incisor. Patients with congenital dentoskeletal disorders

Ages Eligible for Study
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Minimum Age: 12 Years
Maximum Age: 16 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: The total sample of patients will be randomly divided into three equal groups: Miniscrew: 7 patients will receive an intrusive force delivered by elastics from 2 miniscrews between mandibular lateral incisor and mandibular canine. Utility arch: 7 patients will receive an intrusive force delivered by intrusive utility arch. Nitinol reverse curve wire: 7 patients will receive an intrusive force delivered by Nitinol reverse curve wire.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Mini-screw<br>7 patients will receive an intrusive force delivered by elastics from 2 mini-screws between mandibular lateral incisor and mandibular canine. | Other: Mini-screw<br>* 7 patients will receive an intrusive force delivered by elastics from 2 mini-screws between mandibular lateral incisor and mandibular canine.<br>|
| Active Comparator: Utility arch<br>7 patients will receive an intrusive force delivered by intrusive utility arch. | Other: Utility arch<br>* 7 patients will receive an intrusive force delivered by intrusive utility arch.<br>|
| Active Comparator: Nitinol reverse curve wire<br>7 patients will receive an intrusive force delivered by Nitinol reverse curve wire. | Other: Nitinol reverse curve wire<br>* 7 patients will receive an intrusive force delivered by Nitinol reverse curve wire<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Linear amount of root resorption | Cone beam computed tomography linear measurements | Change in Linear Root resorption at 6 months | 
| Volumetric amount of root resorption | Cone beam computed tomography volumetric measurements | Change in Volumetric Root resorption at 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Intrusion, Root resorption, Cone beam computed tomography, Utility Arch, Nitinol reverse curve wire, Miniscrew, Mandibular incisors