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Dento-Alveolar Changes in Maxillary Incisors After En-Masse Retraction Using Two Power-Arm Heights

NCT07259720 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2025-12-02

No results posted yet for this study

Summary

This study aims to evaluate the dento-alveolar changes associated with en-masse retraction of the maxillary anterior teeth using two different power-arm lengths to produce two distinct levels of force application. Twenty patients were randomly assigned into two equal groups. Group I received en-masse retraction using a 5-mm power arm, while Group II was treated using a 9-mm power arm. Cone-beam computed tomography (CBCT) was used to measure changes in buccal bone thickness at 3 mm, 6 mm, and 9 mm levels before and after retraction. The purpose of the study is to assess the influence of power-arm length on force direction, bone remodeling, and the safety of anterior tooth movement.

Conditions

  • Malocclusion, Angle Class II, Division 1

Interventions

PROCEDURE

TAD-supported En-masse Retraction

Orthodontic en-masse retraction of maxillary incisors using temporary anchorage devices (TADs) with different power arm heights following first premolar extraction. The intervention involves controlled retraction mechanics using a 0.017×0.025 stainless steel archwire and vertical power arms to alter the moment-arm and force system.

Sponsors & Collaborators

  • Faculty of Dental Medicine for Girls

    lead OTHER_GOV

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
25 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-11-01
Primary Completion
2023-11-01
Completion
2025-11-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07259720 on ClinicalTrials.gov