Changes in the Sagittal Pharyngeal Airway Dimension Following Leveling and Alignement in Class II Division 2 Patients

Changes in the Sagittal Pharyngeal Airway Dimension Following Leveling and Alignement in Class II Division 2 Patients: A Prospective Clinical Trial

Status

Recruiting

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06602518

Enrollment

Registered

2024-09-19

Start date

2024-06-20

Completion date

2025-01-31

Last updated

2024-09-19

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

Conditions

Class II Division 2 Malocclusion

Brief summary

Aim of the study: is to compare the changes in the sagittal pharyngeal airway dimension (SPAD) and mandibular position before and after the levelling and alignment stage of orthodontic treatment in Class II division 2 patients.

Interventions

PROCEDUREOrthodontic Treatment

All the enrolled patients will undergo conventional fixed appliance therapy by bonding straight wire Roth appliance in the maxillary arch. The bonding procedure will be standardized in all patients and performed by the same operator using light-cured composite. Levelling and alignment will then be started using the following wire sequence: 0.014-in nickel titanium (NiTi), 0.018-in NiTi, 17×25-in Niti, and 19×25-in Niti arch wires. The upper arch will then be stabilized using a 19×25-in stainless steel (SS) arch wire for 2 months. This stage will require approximately 6 months of treatment.

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

12 Years to 16 Years

Healthy volunteers

Inclusion criteria

* Class II/2 subjects as per the British Standard Institute Classification. * Age ranging from 12-16 years, with Cervical Vertebral Maturational Index (CVMI) stages 4, and 5. * Contact between maxillary and mandibular incisors, with the presence of a deep bite of at least 70%. * Full permanent dentition, aside from the third molars

Exclusion criteria

* Previous orthodontic treatment. * Patients with severe transverse problems, pain and/or clicking sound in the temporomandibular joint (TMJ). * Patients with craniofacial anomalies or diagnosed syndromes

Design outcomes

Primary

Measure	Time frame
Changes in the sagittal pharyngeal airway space (SPAD)	6 months

Secondary

Measure	Time frame
Changes in the mandibular position	6 months
Sagittal skeletal measurements	6 months
Vertical skeletal measurements	6 months

Countries

Egypt

Contacts

Primary ContactFarah Y Eid, PhD

farahyousry66@gmail.com+201001495565

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 6, 2026