Ignite Creation Date:
2024-06-16 @ 11:50 AM
Last Modification Date:
2024-10-26 @ 3:31 PM
Study NCT ID:
NCT06442787
Status:
RECRUITING
Last Update Posted:
2024-06-04
First Post:
2024-05-20
Brief Title:
Analysis of Mandibular Proximal Segment Position Using Virtual Orthognathic Surgical Planning Individualized Guides and Osteosynthesis Plates
Sponsor:
Bezmialem Vakif University
Organization:
Bezmialem Vakif University
Study Overview
Official Title:
Analysis of Mandibular Proximal Segment Position Using Virtual Orthognathic Surgical Planning Individualized Guides and Osteosynthesis Plates
Status:
RECRUITING
Status Verified Date:
2024-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Orthognathic surgery is a surgical procedure performed to correct dentofacial deformities In recent years with the use of virtual surgical planning cutting guides and patient-specific osteosynthesis plates highly predictable results can be achieved While there are many positive reports regarding the use of patient-specific plates in maxillary positioning in orthognathic surgery there is a lack of sufficient studies comparing the results obtained in mandibular positioning Additionally numerous designs of proximal segment positioning devices have been published but comparative studies on their effectiveness have not been conducted Therefore a study comparing these approaches has been planned
Detailed Description:
Orthognathic surgery is a frequently used treatment method for correcting dentofacial deformities Bilateral sagittal split osteotomy BSSO developed by Trauner and Obwegeser is still used today with many design modifications There is a potential for incorrect positioning of the proximal segment during fixation Regarding mandibular setback surgery many authors have reported a tendency for medial and posterior rotation of the proximal segment during the postoperative period Proximal segment displacement may result from the condyle not seating properly in the fossa or from early contacts between the proximal and distal segments These early contacts cause rotation of the proximal segment while the mandible is fixed If the displacement exceeds the adaptive capacity of the condyle a high rate of condylar resorption or postoperative relapse may occur Various condylar positioning devices have been developed to overcome this issue
The introduction of virtual surgical planning VSP has helped to overcome some of the errors and difficulties in model surgery and conventional surgical planning Computer-aided design and manufacturing CADCAM splints have been shown to be accurate in transferring the surgical plan to real life but some errors may still occur Patient-specific 3D-printed osteosynthesis plates have been developed to overcome these errors Many studies have reported high accuracy of these plates in the maxilla However some other studies have reported errors of 5-6 mm Similar accuracy rates have been reported for the mandible but there are fewer studies in this area
VSP not only allows the surgeon to visualize 3D movements but also shows the osteotomy design screw placement locations fixation design and early bone contacts The amount of trimming of the distal segment is determined by examining whether any openings or narrowings occur after minor movements are made to the proximal segment based on the rotation of the distal segment or the complex pitch and roll movements of the occlusal plane After all these movements are given with virtual planning personalized cutting guides positioning guides and patient-specific plates are needed to transfer this plan to real life
Recent developments in VSP have focused on accurately transferring preoperative planning to surgery The most significant development in this regard is patient-specific plates and cutting guides This technology enables surgeons and engineers to produce patient-specific cutting guides to determine the incision lines These guides also determine the thickness of the bone in the areas where plate screws will be placed and ensure avoidance of tooth roots Patient-specific plates are designed and manufactured to fit into pre-prepared holes and hold the osteotomized segments together in the desired position Despite being a new technology several studies have shown that VSP and patient-specific plates have better final surgical accuracies compared to VSP and splints
The introduction of virtual surgical planning VSP has helped to overcome some of the errors and difficulties in model surgery and conventional surgical planning Computer-aided design and manufacturing CADCAM splints have been shown to be accurate in transferring the surgical plan to real life but some errors may still occur Patient-specific 3D-printed osteosynthesis plates have been developed to overcome these errors Many studies have reported high accuracy of these plates in the maxilla However some other studies have reported errors of 5-6 mm Similar accuracy rates have been reported for the mandible but there are fewer studies in this area
VSP not only allows the surgeon to visualize 3D movements but also shows the osteotomy design screw placement locations fixation design and early bone contacts The amount of trimming of the distal segment is determined by examining whether any openings or narrowings occur after minor movements are made to the proximal segment based on the rotation of the distal segment or the complex pitch and roll movements of the occlusal plane After all these movements are given with virtual planning personalized cutting guides positioning guides and patient-specific plates are needed to transfer this plan to real life
Recent developments in VSP have focused on accurately transferring preoperative planning to surgery The most significant development in this regard is patient-specific plates and cutting guides This technology enables surgeons and engineers to produce patient-specific cutting guides to determine the incision lines These guides also determine the thickness of the bone in the areas where plate screws will be placed and ensure avoidance of tooth roots Patient-specific plates are designed and manufactured to fit into pre-prepared holes and hold the osteotomized segments together in the desired position Despite being a new technology several studies have shown that VSP and patient-specific plates have better final surgical accuracies compared to VSP and splints
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None