Skeletal stability and accuracy of surgery protocols and orthodontic treatment using Clear Aligner in patients with Mandibular protrusio

Not Applicable

Recruiting

• Conditions: Malocclusion, Angle Class III; C05.660.207

• Registration Number: RBR-2b9qf7h
• Lead Sponsor: niversidade do Estado do Rio de Janeiro

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2024-07-24
• Last Update Posted: 19 August 2024
• Study Completion: 2028-12-31

Recruitment & Eligibility

• Status: Recruiting
• Sex: Not specified
• Target Recruitment: Not specified

Inclusion Criteria

Anteroposterior relationship between the maxillary and mandibular bone bases less than zero degrees; Wittes index negative; etiology related to mandibular excess, maxillary deficiency, or a combination of both; concave profile; presence of at least 3 stable occlusal contact points to ensure both surgical and postoperative stability; need for bimaxillary surgery with LeFort I osteotomy and bilateral sagittal osteotomy, and genioplasty; and absence of residual bone growth

Exclusion Criteria

History of maxillary bone surgery or facial trauma or bone pathologies; total edentulism; a pronounced curve of Spee of more than 3mm; use of any medication contraindicated for surgical treatment; joint or autoimmune syndromes and diseases

Study & Design

• Study Type: Intervention
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
ong-term skeletal changes in Class III patients undergoing orthognathic surgery using the Surgery-First approach treated with orthodontic aligners and fixed appliances in the following anatomical planes: 1) Sagittal plane: anteroposterior analysis of the distance in millimeters from the deepest point of the premaxilla contour (Point A), the deepest point of the mandibular alveolar process contour (Point B) and the most anterior point of the mandibular symphysis contour (Pog); vertical analysis of the angle between the mandibular plane (GoMe) and the Frankfurt plane (PoOr). 2) Coronal plane: analysis of the distance in millimeters in the medial-lateral direction from the point on the curve of the jugal process at the intersection of the contour of the maxillary tuberosity (J) and the point on the lower edge of the antegonial tubercle (Ag).

Secondary Outcome Measures

Name	Time	Method
To assess whether the use of orthodontic aligners (Invisalign System) has an impact on the accuracy of surgical planning in patients with Class III malocclusion undergoing the surgery-first approach, comparing them with patients who underwent the same surgical procedure but using conventional fixed appliances.