Effect of Twin-Block myofunctional appliance on size of lower jaw condyle and pharyngeal airway in growing skeletal jaw discrepancy patients.

Not Applicable

• Conditions: Health Condition 1: K088- Other specified disorders of teethand supporting structures

• Registration Number: CTRI/2022/09/045298
• Lead Sponsor: Dr Govind R Suryawanshi

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Completion: 2023-07-30
• Last Update Posted: 1 April 2024

Recruitment & Eligibility

• Status: Open to Recruitment
• Sex: Not specified
• Target Recruitment: 132

Inclusion Criteria

For experimental group:

1. Skeletal Class II division 1 malocclusion growing patients with normal maxilla and retrognathic mandible (ANB angle greater than 4 degrees, Class II molar and canine relation on both sides)

2. Normal or horizontal growth pattern,

3. Increased positive overjet (more than 6 mm)

4. No or minimum crowding in the dental arches.

For control group:

1. Subjects with same age group having skeletal class I malocclusion with class I molar relationship

2. Less than 6 mm overjet,

3. Treatment done without the use of bite jumping appliance or functional appliance or expansion device or intermaxillary elastics

Exclusion Criteria

For experimental group:

1)Medically compromised patients.

2)Patients with abnormal growth of maxilla.

3)Patients with history of trauma to Temporomandibular joint.

4)Patients with previous history of respiratory problems.

5)History of adeno-tonsillectomy procedure, known history of allergic rhinitis and Subjects with upper airway pathology will be excluded.

For control group:

Exclusion criteria for the control group will be same as that of an experimental group.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
1) Morphology of condyle and Pharyngeal airway in images of cone beam computed tomography before the starting of treatment and following myofunctional therapy with Twin-block appliance approximately at 1 to 1 and half year treatment duration.(Experimental group) <br/ ><br>2) Morphology of condyle and Pharyngeal airway in images of cone beam computed tomography before the starting of orthodontic treatment and approximately at 1 to 1 and half year duration.(Control group)Timepoint: 1) Before the starting of treatment and approximately at 1 to 1 and half year treatment duration.(Experimental group) <br/ ><br>2) Before the starting of orthodontic treatment and approximately at 1 to 1 and half year duration.(Control group)

Secondary Outcome Measures

Name	Time	Method
1) Morphology of condyle and Pharyngeal airway in images of cone beam computed tomography before the starting of treatment and following myofunctional therapy with Twin-block appliance approximately at 9 months, 12 months and 18 months of treatment duration.(Experimental group) <br/ ><br>2) Morphology of condyle and Pharyngeal airway in images of cone beam computed tomography before the starting of orthodontic treatment and approximately at 9 months, 12 months and 18 months of treatment duration.(Control group) <br/ ><br>Timepoint: 1) Before the starting of treatment and approximately at 9 months, 12 months and 18 months of treatment duration.(Experimental group) <br/ ><br>2) Before the starting of orthodontic treatment and approximately at 9 months, 12 months and 18 months of treatment duration.(Control group) <br/ ><br>