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

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

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05737290

Enrollment

Registered

2023-02-21

Start date

2024-05-01

Completion date

2026-04-01

Last updated

2026-05-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Occlusion

Keywords

Clear aligners, Fixed appliances, Anterior crowding, Occlusion, T scan

Brief summary

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.

Detailed description

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.

Interventions

DEVICEClear aligners

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

DEVICEFixed appliances

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

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

OTHER

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

14 Years to 22 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame	Description
Distribution of occlusal forces	1 Year and 6 Months	Amount of magnitude of occlusal forces after treatment by clear aligners

Countries

Egypt

Contacts

PRINCIPAL_INVESTIGATORMoaz Hafez Abdelrhman, Master

Al-Azhar University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 14, 2026