Orthodontic Tooth Movement, Intrusion of Tooth, Resorption, Root
Conditions
Keywords
Intrusion, Root resorption, Cone beam computed tomography, Utility Arch, Nitinol reverse curve wire, Miniscrew, Mandibular incisors
Brief summary
Evaluation of root resorption following different mandibular incisors intrusive mechanics : A randomized clinical trial
Interventions
OTHERMini-screw
7 patients will receive an intrusive force delivered by elastics from 2 mini-screws between mandibular lateral incisor and mandibular canine.
OTHERUtility arch
7 patients will receive an intrusive force delivered by intrusive utility arch.
OTHERNitinol reverse curve wire
7 patients will receive an intrusive force delivered by Nitinol reverse curve wire
Sponsors
Al-Azhar University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE
Masking description
Observation: Each patient will be followed up on periodic base for progress evaluation and integrity checks, as well as root resorption will be evaluated using CBCT images taken before and after the intrusion. Ethical considerations: An informed consent form (attached copy) that explains every step in the research will be given and discussed carefully with the patient and his/her parents before participation in the study and should be signed freely. The objectives of the study will be discussed and explained with the patients and / or their guardians and they will receive a copy of the consent form as well. Data management and analysis: The data will be collected, tabulated, and statistically analyzed using Statistical Package for Social Sciences (SPSS program, version 18, Inc., Chicago, III).
Intervention 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.
Eligibility
Sex/Gender
ALL
Age
12 Years to 16 Years
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Linear amount of root resorption | Change in Linear Root resorption at 6 months | Cone beam computed tomography linear measurements |
| Volumetric amount of root resorption | Change in Volumetric Root resorption at 6 months | Cone beam computed tomography volumetric measurements |
Countries
Egypt
Outcome results
None listed