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OpenTrials
Completed

NCT Number: NCT05737290

Effects of Clear Aligners Versus Fixed Appliances on Occlusion After Treatment of Mild Anterior Crowding

The aim of this study is to evaluate effects of clear aligners versus fixed appliances on occlusion after treatment of mild anterior crowding a T-scan study.

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Key information

Conditions

Occlusion Bites and Stings Chemically-Induced Disorders Poisoning Wounds and Injuries

Age range

14 year–22 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Al Azhar University

Cairo, Nasr City, 11765, Egypt

About this study

Intervention:

Group 1. Patients treated with clear aligner. Patients with mild anterior crowding will be treated with non-extraction treatment using clear aligners.

Group 2. Patients treated with fixed appliance. Patients with mild anterior crowding will be treated with non-extraction treatment using fixed appliances.

Observations:

Multi-bite closure in centric occlusion using T-Scan® recordings were obtained before and after treatment from each subject to measure the occlusal parameters to be analyzed during this study.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Patients between the age (14-22 years).
  • Fully erupted permanent dentition, 3rd molars excluded.
  • Healthy, compliant, and motivated patients who can visit the department regularly.
  • Non-extraction treatment.
  • Class I with mild anterior crowding lower and/ or upper.
  • Good oral and general health.

Exclusion criteria

  • Previous orthodontic treatment.
  • Craniofacial abnormalities, congenital syndromes of the craniofacial area.
  • Anterior or posterior crossbite.
  • Anterior or lateral open bite.
  • Poor oral hygiene or periodontally compromised patient.

Treatment and study plan

Clear aligners

Device

Patients with mild anterior crowding will be treated with non-extraction treatment using clear aligners.

Fixed appliances

Device

Patients with mild anterior crowding will be treated with non-extraction treatment using fixed appliances.

Primary outcomes

  1. Distribution of occlusal forces

    Time frame: 1 Year and 6 Months

    Amount of magnitude of occlusal forces after treatment by clear aligners

  2. Distribution of occlusal forces

    Time frame: 1 Year and 6 Months

    Amount of magnitude of occlusal forces after treatment by fixed appliances

Sponsors and collaborators

Lead sponsor

Al-Azhar University

Other

Registry information

Official study title

Effects of Clear Aligners Versus Fixed Appliances on Occlusion After Treatment of Mild Anterior Crowding: A T-scan Study.

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Feb 21, 2023
Registry last updated
May 13, 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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