Articular Disc Position Before and After BSSRO in Skeleton Class III Patients

Active, not recruiting

• Conditions: Skeleton Class III; Skeleton class III, orthognatic surgery, dentofacial deformities, temporomandibular joint disc, magnetic resonance imaging

• Registration Number: TCTR20220318002
• Lead Sponsor: Chiang Mai university

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2022-03-18
• Study Completion: 2022-12-30
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Active, not recruiting
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

1. Patient age ranged from 18 to 35 years old.
2. Patients with skeleton class III deformities.
3. Patients who receive orthogenic treatment before and after surgical correction.
4. Patients who will prospectively undergo setback BSSRO with and/or without maxillary surgical correction.

Exclusion Criteria

1. Patients who will receive other surgical techniques to eliminate condylar torque such as posterior bending technique
2. Patients with medical conditions that affect bone healing process such as diabetic mellitus, or currently on bisphosphonate or steroid therapy
3. Patients who are currently smoking
4. Patients with history of condyle fracture and/or trauma
5. Patients who have a history of TMDs diagnosis or treatment before being included in the study
6. Patients who have complications of BSSRO such as condylar
displacement, immediate postoperative occlusal instability, unfavorable bony split, infection, loosening miniplates and screws, present of foreign bodies, sequestrum formation, mal-/non-union bone segment will be subsequently excluded from the study
7. Patients who have any contraindication for MRI examination such as
i. Claustrophobia
ii. Patients with metal implants or metal devices such as metal joint
implant, metal plate with ferromagnetic substances, metal cardiac
valve, pacemaker, blood vessel clip, metal stent, cochlear implant
iii. Patients with metallic foreign body
iv. Pregnancy patients

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Articular disc position Before surgery, 3 months after surgery, 6 months after surgery Disc position angle

Secondary Outcome Measures

Name	Time	Method
Disc-condyle relationship Before surgery, 3 months after surgery, 6 months after surgery Evaluate the sagittal view of MR images and classify the disc-condyle relationship