Comparison of Maxillary Canine Retraction Rate Among Conventional (Labial) vs Dual (Simultaneous Labial and Palatal) Force Mechanics Using Labial Fixed Orthodontic Appliances (Dual)

March 31, 2026 updated by: Dow University of Health Sciences
  1. To compare maxillary canine retraction rate among conventional (labial) vs dual (simultaneous labial and palatal) force mechanics using labial fixed orthodontic appliances.
  2. To assess the biomechanical effects of dual force vs single force In this study we will be using the most common method i.e. labial fixed appliances with different techniques to find a more faster and controlled method of canine retraction with least undesirable movements.

Lingual appliances are difficult to apply in normal practice but it has many advantages like faster movement of teeth, less anchorage loss so by using dual force we will have advantages of lingual appliance in combination with the conventional labial technique.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This split mouth study was conducted on 45 patients in which extraction of maxillary first premolars is their orthodontic treatment plan. Patient's maxillary arch was randomly subdivided (through chit method) into control and experimental groups. Labial fixed orthodontic appliances were used in all patients included. GROUP 1 includes canine retraction through conventional (labial) force. GROUP 2 includes canine retraction through dual (labial as well as palatal) force. Critical anchorage was used. Rate of canine retraction was measured through Vernier calipers intraorally as well as on study casts at following time points. T0: just before canine retraction. T1-T6: 1-6 months of canine retraction.

Study Type

Interventional

Enrollment (Actual)

45

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Pakistan
      • Karachi, Pakistan, 75300
        • Dr Ishrat ul Ebad Khan Institute of Oral Health Sciences

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Patients aged 15-30 years.
  • Patients undergoing conventional labial fixed appliance treatment.
  • Good oral hygiene and periodontal support.
  • Patients with maxillary first premolar's extraction treatment plan.

Exclusion Criteria:

  • Patients with buccally displaced, high, missing or impacted canines.
  • Systemic diseases like diabetes, hypertension etc
  • Any bone pathology or taking medicines like bisphosphonates which slow down tooth movement.
  • Patients with narrow/constricted maxillary arches

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Labial force vs dual retraction force
Rate of canine retraction was measured among labial vs dual force for retraction
Procedure: Dual force application
Dual force is applied on one side and compared with conventional retraction
Other Names:
  • Canine retraction
Experimental: Dual force
On one side canine retraction is done with labial force only while on other side dual force i.e labial as well as palatal forces are used
Procedure: Dual force application
Dual force is applied on one side and compared with conventional retraction
Other Names:
  • Canine retraction

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
To compare maxillary canine retraction rate among conventional (labial) vs dual (simultaneous labial and palatal) force mechanics using labial fixed orthodontic appliances.
Time Frame: 6 months
Rate of canine retraction will be assessed and compared from T1 to T6 in two groups one with labial force only and the other with dual force through measurement taken on cast as well as intraorally at each timepoints through vernier calipers.
6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
. To assess the biomechanical effects of dual force vs single force
Time Frame: 6 months
During canine retraction biomechaical effects will be assessed that most commonly occur such as rotation in dual force vs conventional single force through measurement from the cast duplicated on tracing paper to evaluate mesial and distal angle of canine.
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Dow University of Health Sciences

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 10, 2023

Primary Completion (Actual)

March 23, 2024

Study Completion (Actual)

June 7, 2024

Study Registration Dates

First Submitted

February 28, 2026

First Submitted That Met QC Criteria

March 31, 2026

First Posted (Actual)

April 2, 2026

Study Record Updates

Last Update Posted (Actual)

April 2, 2026

Last Update Submitted That Met QC Criteria

March 31, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 2990

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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