Comparing two methods to improve chin projection in adolescents
Modified Herbst Approach to Improve Chin Projection in Class II Malocclusion Patients: A Randomized Controlled Trial
This study is testing two different orthodontic treatments for improving chin projection in teenagers with bite issues to see which one works better.
Quick facts
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 40 (estimated) |
| Ages | 12 Years to 15 Years |
| Sex | All |
| Sponsor | University of Alberta Academic / other |
| Locations | 1 site (Edmonton, Alberta) |
| Trial ID | NCT05597748 on ClinicalTrials.gov |
What this trial studies
This study aims to compare the effectiveness of two orthodontic approaches for treating Class II malocclusion in adolescents. One approach uses a modified Herbst appliance followed by braces, while the other incorporates temporary bone screws with the bite corrector before braces. The study will assess facial, skeletal, and dental changes resulting from each method, as well as gather patient-reported outcomes through questionnaires and interviews. The goal is to determine if there are significant differences in treatment outcomes between the two approaches.
Who should consider this trial
Good fit: Ideal candidates are adolescents with mild to moderate Class II skeletal malocclusion who meet specific dental criteria.
Not a fit: Patients who have severe Class II malocclusion requiring surgical intervention or those with congenitally missing teeth may not benefit from this study.
Why it matters
Potential benefit: If successful, this study could provide insights into more effective orthodontic treatments for Class II malocclusion, potentially reducing the need for surgery in the future.
How similar studies have performed: Previous studies have shown varying degrees of success with similar orthodontic approaches, but this specific comparison is novel.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: * Class II skeletal malocclusion based on PgOLp more than 85 mm and A-OLp more than 75 mm. * Perceived potential improvement of facial convexity. * At least end-to-end bilateral molar relationship. * Early permanent dentition. * No congenitally missing teeth. Exclusion criteria: * Class II skeletal malocclusion based on PgOLp less than 85 mm and A-OLp less than 75 mm. * Only reasonable management option is surgery. * Less than an end-to-end bilateral molar relationship. * Mixed dentition dentition. * Congenitally missing teeth.
Where this trial is running
Edmonton, Alberta
- University of Alberta — Edmonton, Alberta, Canada (Recruiting)
Study contacts
- Principal investigator: Carlos Flores Mir, DSc — University of Alberta
- Study coordinator: Carlos Flores Mir, DSc
- Email: cf1@ualberta.ca
- Phone: 7804927409
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.