Efficacy of Aligners vs ABT and RCOS for Deep Bite Correction: CBCT Study

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-10-01

Study Completion Date

2027-10-01

Brief Summary

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This prospective clinical trial aims to evaluate the efficacy of clear aligner therapy compared to two different treatment modalities - anterior bite turbos and reverse curve of Spee (RCOS) archwires - for the correction of dental deep bite cases. Deep bite malocclusion is characterized by excessive vertical overlap of the anterior teeth and often requires intrusion of anterior teeth and leveling of the curve of Spee.

In this study, 27 patients aged 16-30 years with an overbite ≥5 mm and no significant skeletal discrepancies will be randomly assigned into three equal groups: Group 1 (RCOS archwire), Group 2 (anterior bite turbos), and Group 3 (clear aligners).

Cone-beam computed tomography (CBCT) will be used to assess changes in overbite and alveolar bone height and thickness before and after treatment. The primary outcome is the efficacy of overbite correction, and the secondary outcome is the assessment of alveolar bone remodeling.

The study will be conducted at the Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University (Assiut Branch), and has been approved by the institutional ethical committee.

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Detailed Description

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Conditions

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Deep Bite Malocclusion

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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RCOS Archwire Group

Patients treated with reverse curve of Spee archwire (0.016 × 0.022 NiTi) to correct deep bite via posterior extrusion and anterior intrusion.

Group Type EXPERIMENTAL

Reverse Curve of Spee Archwire

Intervention Type DEVICE

Orthodontic treatment using a 0.016 × 0.022 NiTi reverse curve of Spee archwire to correct deep bite through posterior extrusion and anterior intrusion.

Anterior Bite Turbos Group

Patients treated with anterior bite turbos bonded to the palatal surface of upper central incisors to correct deep bite.

Group Type EXPERIMENTAL

Anterior Bite Turbos

Intervention Type DEVICE

Orthodontic treatment using anterior bite turbos bonded to the palatal surfaces of the upper central incisors to promote posterior extrusion and correct deep bite.

Clear Aligners Group

Group Type EXPERIMENTAL

Clear Aligners

Intervention Type DEVICE

Orthodontic treatment using clear aligner therapy designed for anterior intrusion and leveling of the curve of Spee to correct deep bite.

Interventions

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Reverse Curve of Spee Archwire

Orthodontic treatment using a 0.016 × 0.022 NiTi reverse curve of Spee archwire to correct deep bite through posterior extrusion and anterior intrusion.

Intervention Type DEVICE

Anterior Bite Turbos

Orthodontic treatment using anterior bite turbos bonded to the palatal surfaces of the upper central incisors to promote posterior extrusion and correct deep bite.

Intervention Type DEVICE

Clear Aligners

Orthodontic treatment using clear aligner therapy designed for anterior intrusion and leveling of the curve of Spee to correct deep bite.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

\- Age between 16 and 30 years.

Overbite of 5 mm or more.

Full permanent dentition (excluding third molars).

Good oral hygiene.

No previous orthodontic or orthognathic treatment.