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OpenTrials
Completed

NCT Number: NCT07508384

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

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.

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Key information

Conditions

Canine Retraction

Age range

15 year–30 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Dr Ishrat ul Ebad Khan Institute of Oral Health Sciences

Karachi, 75300, Pakistan

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Dual force application

Procedure

Dual force is applied on one side and compared with conventional retraction

Other names: Canine retraction

Primary outcomes

  1. 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.

Secondary outcomes

  1. . 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.

Sponsors and collaborators

Lead sponsor

Dow University of Health Sciences

Other

Registry information

Acronym: Dual

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Apr 2, 2026
Registry last updated
Apr 2, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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