Effects of different functional therapy protocols on airway dimensions during Herbst appliance therapy

Not Applicable

Completed

• Conditions: Skeletal class II malocclusion with mandibular retrognathy; Oral Health

• Registration Number: ISRCTN69743543
• Lead Sponsor: Erciyes University Clinical Trials Ethical Committee

Brief Summary

2019 results in https://pubmed.ncbi.nlm.nih.gov/30892615/ (added 26/10/2020)

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Completion: 2017-09-05
• Study Start: 2018-12-06
• Last Update Posted: 9 November 2020

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 48

Inclusion Criteria

1. Skeletal Class II malocclusion (ANB angle >4°) and mandibular retrognathy (SNB <78°)
2. Bilateral Class II molar and canine relationship (at least 3.5 mm)
3. Increased overjet (more than 7 mm)
4. Normal or decreased vertical dimensions (SN-GoGn =32)
5. Minimal crowding (=4) and no missing teeth on upper and lower arches
6. Aged 14-18 years

Exclusion Criteria

1. Craniofacial anomalies
2. Musculoskeletal diseases
3. Severe facial asymmetry
4. Severe maxillary transverse deficiency
5. Poor oral hygiene

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Changes in pharyngeal airway and hyoid position, assessed using lateral cephalometric radiography before using the Herbst-RPE appliance and immediately after appliance removal

Secondary Outcome Measures

Name	Time	Method
Skeletal changes, assessed using lateral cephalometric radiography before using the Herbst-RPE appliance and immediately after appliance removal