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

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

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.

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.

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.