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Comparison of Alignment Efficiency, Arch Dimensional Changes, and Passive Extraction Space Closure Between Self-Ligating and Conventional Brackets

NCT07503314 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 70

Last updated 2026-03-31

No results posted yet for this study

Summary

Purpose:

This study aims to compare two types of orthodontic braces - self-ligating brackets (SLBs) and conventional brackets (CBs) - to see which one aligns teeth faster, affects the width of the dental arch, and closes spaces after premolar extractions more efficiently.

Who Can Join:

Ages 13-30 years Moderate to severe dental crowding Skeletal Class I or mild to moderate Class II malocclusions Good oral hygiene Requiring extraction of premolars

What Participants Will Do:

Participants are randomly assigned to either the SLB group or the CB group. Braces are bonded to the teeth following standard orthodontic procedures. Dental impressions and measurements will be taken at baseline, 3, 6, and 9 months.

No extra devices (like power chains) will be used for space closure during the study.

What is Being Measured:

Alignment of teeth using Little's Irregularity Index Intercanine and intermolar widths (arch dimensions) Passive closure of extraction spaces

Why This Study is Being Done:

The study investigates whether SLBs provide any clinical advantage over conventional braces in terms of faster alignment, arch width changes, and efficient space closure in extraction cases. This could help orthodontists make evidence-based decisions when choosing braces.

Study Duration:

Total observation period: 9 months Monthly follow-ups for adjustments and measurements

Conditions

  • Dental Crowding
  • Passive Extraction Space
  • Intercanine Width
  • Intermolar Width

Interventions

DEVICE

Self-Ligating Brackets (SLB)

Participants received 0.022-inch slot MBT conventional brackets (Equilibrium 2, Dentaurum, Germany) bonded to all teeth up to the second premolars. Alignment began with 0.014-inch NiTi archwires and progressed through the same standardized sequence as the SLB group. Stainless steel lacebacks were applied for early canine control. No active space-closing auxiliaries (power chains or closed-coil springs) were used during the 9-month observation period. Outcome measurements were taken at baseline, 3, 6, and 9 months on blinded study casts.

DEVICE

Conventional Bracket

Participants in this arm received 0.022-inch slot MBT conventional brackets (Equilibrium 2, Dentaurum, Germany) bonded to all teeth up to the second premolars. Alignment began with 0.014-inch NiTi archwires and progressed using a standardized archwire sequence (0.016, 0.018 NiTi, 0.016×0.022 NiTi, 0.019×0.025 stainless steel). Stainless steel lacebacks were applied for early canine control, and no active space-closing auxiliaries (e.g., power chains or NiTi closed-coil springs) were used during the 9-month observation period. Outcome measurements were taken at baseline, 3, 6, and 9 months on blinded study casts.

Sponsors & Collaborators

  • Saidu College of Dentistry

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
13 Years
Max Age
30 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-02-01
Primary Completion
2025-06-25
Completion
2025-06-25

Countries

  • Pakistan

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 NCT07503314 on ClinicalTrials.gov