Efficacy of Aligners vs ABT and RCOS for Deep Bite Correction: CBCT Study
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Reverse Curve of Spee Archwire, Anterior Bite Turbos, Clear Aligners.
- Who it may be relevant to
- Registry conditions: Deep Bite Malocclusion. Basic parameters: 16 years — 30 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
The Efficacy of Aligner Therapy Versus Anterior Bite Turbos and Reverse Curve of Spee Archwires for Correction of Deep Bite Cases: A Cone-beam Computed Tomography Study
Overview
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.
Interventions
- Device 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. - 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. - Device Clear Aligners
Orthodontic treatment using clear aligner therapy designed for anterior intrusion and leveling of the curve of Spee to correct deep bite.
Primary outcome measures
- Change in overbite [Time frame: Baseline and 6 months after treatment start]
Eligibility criteria
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.
Exclusion criteria
- Severe skeletal Class II or III requiring surgery.
Overjet greater than 6 mm.
Craniofacial anomalies.
Systemic diseases.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07096401 · AU-Ortho-DB-2025