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Effects of Herbst Appliance Therapy to Improve Airway Dimension

NCT02448017 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2018-05-04

No results posted yet for this study

Summary

Herbst appliance is one of the most popular fixed functional appliances to treat orthodontic patients with small lower jaws. Since small lower jaws are reported to be one of the main reasons to induce sleep disordered breathing(SDB) of children, Herbst appliance can be used to treat SDB children. Previously no study compared the effects of Herbst appliance therapy with removable functional appliance on airway dimension, so it still remains unclear which kinds of functional appliance is more suitable for improving airway dimension. This study will assess the effect of Herbst appliance on airway dimension and compare the effects with those of twin block appliance (a popular 24 hours used removable functional appliance, and also commonly used to treat adult sleep apnea).

Conditions

  • Angle Class II

Interventions

DEVICE

The Herbst appliance

Orthodontic functional appliance

DEVICE

Twin block appliance

Orthodontic functional appliance

Sponsors & Collaborators

  • The University of Hong Kong

    lead OTHER

Principal Investigators

  • Yanqi Yang · The Paediatric dentistry and orthodontic department, Faculty of Dentistry, the University of Hong Kong

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
11 Years
Max Age
17 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-07-31
Primary Completion
2017-10-31
Completion
2017-12-31

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02448017 on ClinicalTrials.gov