Evaluation of Root Resorption Following Different Mandibular Incisors Intrusive Mechanics

Not Applicable

• Conditions: Resorption, Root; Orthodontic Tooth Movement; Intrusion of Tooth
• Interventions: Other: Mini-screw; Other: Nitinol reverse curve wire; Other: Utility arch

• Registration Number: NCT05414019
• Lead Sponsor: Al-Azhar University

Brief Summary

Evaluation of root resorption following different mandibular incisors intrusive mechanics : A randomized clinical trial

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2022-05-29
• Study First Submitted QC: 2022-06-08
• Study First Posted: 2022-06-10
• Status Verified: 2025-04
• Last Update Submitted: 2025-04-23
• Last Update Posted: 2025-04-25
• Study Start: 2025-05-15
• Primary Completion: 2026-01
• Study Completion: 2026-01

Recruitment & Eligibility

• Status: ENROLLING_BY_INVITATION
• Sex: All
• Target Recruitment: 21

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Mini-screw	Mini-screw	7 patients will receive an intrusive force delivered by elastics from 2 mini-screws between mandibular lateral incisor and mandibular canine.
Nitinol reverse curve wire	Nitinol reverse curve wire	7 patients will receive an intrusive force delivered by Nitinol reverse curve wire.
Utility arch	Utility arch	7 patients will receive an intrusive force delivered by intrusive utility arch.

Primary Outcome Measures

Name	Time	Method
Volumetric amount of root resorption	Change in Volumetric Root resorption at 6 months	Cone beam computed tomography volumetric measurements
Linear amount of root resorption	Change in Linear Root resorption at 6 months	Cone beam computed tomography linear measurements

Trial Locations

Locations (1)

Al Azhar University; 🇪🇬 Cairo, Egypt