Root Resorption and Alveolar Bone Changes in the Maxillary Canine Retraction Using Ni Ti Closed-coil Springs Versus Elastomeric Chains (A Split -Mouth Cone Beam CT Study)

Not Applicable

Not yet recruiting

• Conditions: Orthodontic Patients Indicated for Upper First Premolar Extraction; Orthodontic Patients Indicated for Maxillary Canine Retraction

• Registration Number: NCT07116954
• Lead Sponsor: Al-Azhar University

Brief Summary

This study will be carried out to asses root resorption and alveolar bone changes in the maxillary canine retraction using NiTi closed-coil springs versus elastomeric chains with cone beam CT

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2025-07-15
• Status Verified: 2025-08
• Study First Submitted QC: 2025-08-07
• Last Update Submitted: 2025-08-07
• Study First Posted: 2025-08-12
• Last Update Posted: 2025-08-12
• Study Start: 2025-09-01
• Primary Completion: 2026-12
• Study Completion: 2027-05-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 22

Inclusion Criteria

• Patients aged 16 years or older
  • Patients indicated for fixed orthodontic appliances
  • Patients indicated for bilateral extraction of maxillary first premolars
  • Patients who have not undergone any previous orthodontic treatment

Exclusion Criteria

• Patients with a history of craniofacial trauma, anomalies, or congenital defects
  • Patients currently taking anticoagulant drugs affecting bone metabolism
  • Patients with a history of trauma or pathology involving the maxillary canines
  • Patients with periodontally compromised teeth

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Change in Apical Root Length After Canine Retraction	Baseline (prior to canine retraction) and 6 months after retraction	Measurement of apical root length (in millimeters) using CBCT images at T1 and T2 to assess root resorption on both retraction methods.
Change in Alveolar Bone Thickness After Canine Retraction	Baseline (prior to canine retraction) and 6 months after retraction	Quantitative measurement of alveolar bone thickness (in millimeters) using CBCT images taken at baseline (T1) and post-treatment (T2) in both NiTi closed-coil spring and elastomeric chain sides.

Secondary Outcome Measures

Name	Time	Method
Change in Probing Depth	Baseline and 6 months post-treatment	Measurement of probing depth (in millimeters) on both sides at baseline and 6 months
Change in Plaque Index	Baseline and 6 months post-treatment	Scoring of plaque accumulation using the Silness-Löe Plaque Index (score range: 0 to 3; higher score = worse outcome)
Change in Bleeding Index	Baseline and 6 months post-treatment	Evaluation using the Gingival Bleeding Index (score range: 0 to 3; higher score = worse outcome)