Corticotomy-Assisted Class III Elastic Applications

Not Applicable

Completed

• Conditions: Class III Malocclusion

• Registration Number: NCT06763900
• Lead Sponsor: TC Erciyes University

Brief Summary

This prospective randomized clinical study aimed to evaluate the effectiveness of corticotomy-assisted maxillary protraction with three different miniplate and intermaxillary elastic applications after corticotomy in patients with skeletal Class III malocclusion.

Detailed Description

In acrylic splint group (AS) and palatal miniscrew group (MS), an acrylic splint containing hooks in the upper molar region was prepared and cemented. In the MS group, two miniscrews were used in the palatal region for additional anchorage. An incomplete Le Fort 1 osteotomy was performed in all patients to free the maxilla. Miniplates were placed vertically between the mandibular canine and first premolar in all groups, and horizontally under the osteotomy line in the maxillary molar region in miniplate group (MP). Class III elastics were applied 5 days after the surgery.

Study Timeline

• Study Start: 2022-03-14
• Primary Completion: 2023-03-29
• Study Completion: 2023-05-06
• Status Verified: 2023-06
• Study First Submitted: 2023-06-07
• Study First Submitted QC: 2025-01-02
• Last Update Submitted: 2025-01-02
• Study First Posted: 2025-01-08
• Last Update Posted: 2025-01-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• Skeletal Class III malocclusion
• ANB angle between 0 and -4°
• normal or horizontal growth pattern
• anterior crossbite or edge-to-edge incisor relationship
• permanent dentition

Exclusion Criteria

• requirement for maxillary expansion
• pseudo-Class III malocclusion
• inadequate oral hygiene
• missing tooth in the upper dentition

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Maxillomandibular sagittal changes	Through study completion, an avarage of 6 months	Investigation of Angular changes in SNA (°), SNB (°), ANB (°) measurements. Investigation of Distance changes in Wits (mm), A-Na Perp (mm), Co-A (mm), A-VRL (mm), and B-VRL (mm) measurements.
Vertical changes	Through study completion, an avarage of 6 months	Investigation of Angular changes in Y-axis angle (°), SN-GoGN (°), SN-PP (°), Jarabak ratio measurements.; Investigation of Distance changes in A-HRL (mm) measurement.
Dentoalveolar changes	Through study completion, an avarage of 6 months	Investigation of Angular changes in U1-SN (°), U1-PP (°), IMPA (°) measurements.; Investigation of Distance changes in Overjet (mm), Overbite (mm), U1-VRL (mm), and U6-VRL (mm) measurements.
Soft tissue changes	Through study completion, an avarage of 6 months	Investigation of Angular changes in soft tissue convexity (°), NA-Pog (°) measurements.; Investigation of Distance changes in VRL-prn (mm), VRL-Is (mm), VRL-li (mm), VRL-pog (mm), and ANS-Me (mm) measurements.

Trial Locations

Locations (1)

Erciyes University Faculty of Dentistry, Department of Orthodontics; 🇹🇷 Kayseri, Turkey