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Effect of Skeletally Anchored Herbst Appliance in Treatment of Skeletal Class 2 Due to Mandibular Retrusion

NCT04388046 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2020-05-14

No results posted yet for this study

Summary

Ten adolescent female patients with Class 2 mandibular deficiency with a mean age of 16.5 ±1.71 years treated with type IV Herbst appliance.

Skeletally anchored appliance was connected directly to the mandible by a bilateral reconstruction bone plates to provide a skeletal anchorage, while connected to the maxilla through dental splint connecting upper canine, first premolar, first and second molars through the use of orthodontic bands connected together palatally by a heavy 1mm stainless steel wire.

The treatment duration was 9 months, then the appliances were removed,The Cone Beam Computed Tomography (CBCT) scans were taken before and immediately after Herbst treatment to analyse airway volume, also 3D measurement of the effective mandibular length has been taken. Cephalometric film was extracted from CBCT scans and analysed for dentoskeletal and soft tissue changes.

Conditions

  • Malocclusion, Angle Class II

Interventions

DEVICE

Herbst fixed functional appliance

Herbst appliance could be considered as an artificial joint working between maxilla and mandible. The appliance consists of a bilateral telescope mechanism attached to upper and lower jaws keeping the mandible in an anterior jumped position.

Sponsors & Collaborators

  • Khaled ELHabbak

    lead OTHER

Principal Investigators

  • khaled El-Habbak · Alazhar universty

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
14 Years
Max Age
20 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2017-12-25
Primary Completion
2019-01-02
Completion
2019-09-25

Countries

  • Egypt

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 NCT04388046 on ClinicalTrials.gov