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Clinical and Radiographic Evaluation of Low Sagittal Medial Ramus Osteotomy for Treatment of Skeletal Class II and Class III Malocclusion

NCT07746700 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 11

Last updated 2026-08-05

No results posted yet for this study

Summary

This prospective clinical trial aims to evaluate the clinical and radiographic outcomes of the low sagittal medial ramus osteotomy-a technical modification of the conventional sagittal split osteotomy (SSO)-for treating patients with skeletal Class II and Class III malocclusions.

Standard sagittal split osteotomies carry risks of complications, including unfavorable osteotomy propagation (bad splits) toward the condyle, ramus fragmentation, lingual interference of the distal segment, and inferior alveolar nerve (IAN) injury. To minimize these risks, this study utilizes a modified medial cut positioned low (below the lingula in an area with adequate marrow space) and short (terminating anterior to the lingula). This design aims to prevent osteotomy extension into the condylar region and eliminate lingual interference during segment repositioning.

Conditions

  • Skeletal Class II Malocclusion
  • Skeletal Class III Malocclusion
  • Dentofacial Deformities

Interventions

PROCEDURE

Low Sagittal Medial Ramus Osteotomy

Patients undergoing orthognathic surgery using the low sagittal medial ramus osteotomy modification. The medial osteotomy cut is initiated slightly above the mandibular occlusal plane, positioned low (below the lingula in an area with adequate marrow space) and short (terminating anterior to the lingula and retrolingual fossa) to achieve 3D mandibular repositioning guided by CAD/CAM virtual surgical planning.

Sponsors & Collaborators

  • Al-Azhar University

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-09-30
Primary Completion
2027-04-30
Completion
2027-09-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07746700 on ClinicalTrials.gov