3-D Evaluation of Alveolar Bone Changes and Root Resorption After Traction of Buccally Displaced Maxillary Canines
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: T-loop, Piggyback double wire.
- Who it may be relevant to
- Registry conditions: Malocclusion; Displaced Teeth. Basic parameters: from 12 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Yemen
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Three-Dimensional Evaluation of Alveolar Bone Changes and Root Resorption After Orthodontic Traction of Unilateral Buccally Displaced Maxillary Canines Using Two Different Techniques: A Randomized Clinical Trial
Overview
This clinical study used CBCT images to investigate the alveolar bone changes and root resorption in unilateral buccally displaced maxillary canines and adjacent teeth before and after orthodontic traction of unilateral BDMCs. The CBCT images will also be used to compare these changes to the normal contralateral side. The study outcome is to compare the 3-D changes in the alveolar bone and dental roots between the 2 interventional techniques (segmentalT-loop and piggyback NiTi traction) methods.
Detailed description
Buccally displaced eruptions of permanent maxillary canines occur in 0.8% to 5.2% of orthodontic cases. Patients are often motivated to request orthodontic treatment when they have crowded teeth and maxillary canines that come in buccally erupted.
The treatment of BDMC is challenging due to the limited labial alveolar bone and the potential risks of root resorption, bone loss, and gingival recession due to the movement of long and bulge roots, necessitating bodily movement with light and constant orthodontic force. The previous studies focused only on comparisons of root resorption, bone loss, and periodontal health before and after impacted canine traction. The previous studies on BDMC mainly included case reports that looked at various orthodontic traction methods. To our knowledge, no randomized clinical trial has been done to study the 3- D changes in the alveolar bone and root length after orthodontic traction of BDMCs.
Interventions
- Device T-loop
Firstly, only the BDMC will be bonded with a preadjusted edgewise bracket from the 0.022-in-slot MBT system and cementing the trans palatal arch. Canine traction will be carried out by ligating the segmental T loop of 0.016×0.022 TMA wire on the BDMC and inserting the other end of the T loop in the maxillary first permanent molar tube. The segmented T loop will be activated by 2 mm per month and tightened posteriorly to the tube of the first permanent molar for approximately 3 months to move th - Device Piggyback double wire
All teeth in both maxillary and mandibular arches will be bonded with preadjusted edgewise brackets from the 0.022- in-slot MBT system. Leveling and alignment will start with engaging 0.014-in NiTi arch wires in both arches, bypassing maxillary BDMC. The arch wire sequence will include 0.014-in NiTi, 0.016-inch NiTi, 0.016x0.022-inch NiTi. After the arches are properly aligned, the piggyback technique will be used on the maxillary arch, and the arch wire size will be increased to 0.016 x 0.016
Primary outcome measures
- Mean Change in the Alveolar Bone Thickness [Time frame: From baseline (before orthodontic traction) to the completion of orthodontic traction (an average of 8 months)]
- Mean Change in the Alveolar Bone Height [Time frame: Baseline and Month 8]
Secondary outcome measures (2)
- Mean Change in Root Resorption [Time frame: Baseline and Month 8]
- Difference Between Two groups in Alveolar Bone Dimension Changes [Time frame: Month 8 after the completion of canine traction.]
Eligibility criteria
Inclusion criteria
- Yemeni ethnic patients.
- Presence of unilateral BDMC.
- The presence of a properly positioned and normally erupted contralateral canine.
- Mild to moderate crowding.
- The need for fixed orthodontic treatment.
- No sagittal discrepancy
Exclusion criteria
- History of severe facial trauma.
- Previous orthodontic treatment.
- Presence of bilateral BDMC.
- Presence of developmental dental anomalies.
- Presence of facial syndromes and bone metabolism disease.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Double blind
- Primary purpose
- Treatment
Study locations
Yemen · 1 center
- Sana'a University — Sanaa
Identifiers
NCT: NCT07399197 · OR:04/03/2025