Skeletal class II malocclusion with mandibular retrognathy Oral Health Skeletal class II malocclusion with mandibular retrognathy
Conditions
Interventions
Participants will be randomly allocated to receive either maximum advancement or incremental advancement in a 1:1 ratio using a random number table.
Both groups will receive mandibular
Sponsors
Erciyes University Clinical Trials Ethical Committee
Eligibility
Sex/Gender
All
Inclusion criteria
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
Exclusion criteria: 1. Craniofacial anomalies 2. Musculoskeletal diseases 3. Severe facial asymmetry 4. Severe maxillary transverse deficiency 5. Poor oral hygiene
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in pharyngeal airway and hyoid position, assessed using lateral cephalometric radiography before using the Herbst-RPE appliance and immediately after appliance removal | — |
Secondary
| Measure | Time frame |
|---|---|
| Skeletal changes, assessed using lateral cephalometric radiography before using the Herbst-RPE appliance and immediately after appliance removal | — |
Countries
Turkey
Outcome results
None listed