Comparison Between Lingual and Labial Fixed Orthodontic Appliances in the Treatment of Crowding Cases

Damascus University

Status: Completed

Conditions: Crowding

Treatments: Device: Lingual appliances; Device: Labial appliances

Study type: Interventional

Funder types: Other

Identifiers

NCT03850951

UDDS-Ortho-04-2018

Details and patient eligibility

About

Patients who have moderate crowding that could be treated without extraction will be treated in this study using either lingual or labial fixed orthodontic appliances. All patients will receive a cone-beam computed tomography (CBCT) scan in two different times (T0: before treatment, T1: after treatment). The dentoalveolar changes will be assessed.

Full description

Lingual orthodontic appliances provide an ultimate esthetic solution for patients who do not want visible orthodontic appliances. Recently, lingual orthodontic treatment outcomes have become similar and comparable to those produced with labial orthodontic treatment. However, placement of orthodontic brackets on the lingual surfaces of teeth causes changes in their morphology, which results in articulation problems, chewing difficulties, tongue irritation and other impairments. In this respect, the main difference between the labial and lingual techniques is the distance between the point of application of the force that is transmitted through the bracket and the centre of resistance of the tooth. Consequently, the displacement and stress induced in bone by these two techniques will also differ, and these need to be evaluated so that useful comparisons can be made between these two techniques. Patients who have moderate crowding that could be treated without extraction will be treated in this study using either lingual or labial fixed orthodontic appliances. All patients will receive a cone-beam computed tomography (CBCT) scan in two different times (T0: before treatment, T1: after treatment). The dentoalveolar changes will be assessed.

Enrollment: 44 patients

Sex: All

Ages: 18 to 25 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Class I malocclusion.
• Moderate crowding in the dental arch (3 to 5-mm tooth-size arch-length discrepancy).

Exclusion criteria

• Inappropriate oral hygiene and periodontal diseases.
• Previous orthodontic treatment.
• Craniofacial syndromes, cleft lip and/or palate (soft and/or hard).
• Subject with systemic diseases.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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44 participants in 2 patient groups

Lingual appliances "AO®"

Experimental group

Description:

Patients with moderate crowding will be treated without extraction using lingual fixed appliances from American Orthodontics company.

Treatment:

Device: Lingual appliances

Labial appliances "AO®"

Experimental group

Description:

Patients with moderate crowding will be treated without extraction using labial fixed appliances from American Orthodontics company.

Treatment:

Device: Labial appliances