NCT04562545

Twin Block Appliance in Incremental Versus Maximum Bite Advancement in Skeletal Class II

Effect of Incremental Versus Maximum Bite Advancement in Class II Subjects Using Twin Block Appliance : Randomized Clinical Trials

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 24 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: Female
• Age: 9 Years – 13 Years
• Healthy volunteers: Not accepted

Summary

The aim of this study is to compare to different protocols to treat Class II malocclusion in growing subjects using the twin block appliance

Detailed description

* Patients will be clinically and radio-graphically examined for eligibility * Eligible patients will be randomly assigned to one of two groups: * Control Group: Twin Block Appliance fabricated to Maximum Bite Advancement group * Intervention Group: Twin Block Appliance fabricated for Incremental Bite Advancement group * Records will be taken and impressions will be made and poured. In the control group, bite registration will be made with maximum mandibular advancement. In the intervention group, bite registration is made to habitual bite to make a modified twin block. * Patients will be recalled every 6 weeks for 8 months for monitoring and reactivation of the appliance.

Conditions

• Mandibular Retrognathism
• Mandibular Hypoplasia

Interventions

Type	Name	Description
DEVICE	Modified Twin Block	a modified twin block design including jack screws to facilitate incemental advancement
DEVICE	Twin Block Appliance set to maximum bite	a traditional twin block set to maximum bite advancement at start of treatment

Timeline

• Start date: 2020-09-15
• Primary completion: 2021-09-15
• Completion: 2021-09-15
• First posted: 2020-09-24
• Last updated: 2020-09-24

Locations

1 site across 1 country: Egypt