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NCT Number: NCT07399197

3-D Evaluation of Alveolar Bone Changes and Root Resorption After Traction of Buccally Displaced Maxillary Canines

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.

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Key information

Conditions

Malocclusion; Displaced Teeth Malocclusion Root Resorption Stomatognathic Diseases Tooth Diseases Tooth Resorption

Age range

12 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

T-loop

Device

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 the canine.

Once the BDMC is in the proper site in the maxillary arch, 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.

Piggyback double wire

Device

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-inch stainless15 steel for the maxillary arch and ligating the accessory 0.012-inch NiTi round for BDMC traction.

Primary outcomes

  1. 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)

    The mean change in the alveolar bone thickness will be measured in millimeters (mm) using CBCT scans.

  2. Mean Change in the Alveolar Bone Height

    Time frame: Baseline and Month 8

    Alveolar bone height measured in millimeters (mm) using CBCT.

Secondary outcomes

  1. Mean Change in Root Resorption

    Time frame: Baseline and Month 8

    The rate of external root resorption in mm measured using CBCT scans.

  2. Difference Between Two groups in Alveolar Bone Dimension Changes

    Time frame: Month 8 after the completion of canine traction.

    Measuring the mean change in alveolar bone dimension (mm) between Segmental T loop and Piggyback Orthodontic traction techniques using CBCT.

Study contacts

Contact information is provided by the study sponsor or research team.

Fuad Luft Almutareb, Prf.

CONTACT

[email protected]

0967772275275

Mohammed A Al-Hababy, MSc

CONTACT

[email protected]

00967- 777771166

Sponsors and collaborators

Lead sponsor

Sana'a University

Other

Registry information

Official study 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

Acronym: BDMC

Important dates

Study start
2026
Primary completion
2026
Study completion
2027
First posted
Feb 10, 2026
Registry last updated
May 7, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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