Apertognathia
Conditions
Keywords
Skeletal open bite
Brief summary
In patient with skeletal open bite, Dose computer-aided surgery enhances the clinical outcomes and accuracy versus conventional model surgery
Detailed description
P Adult Patients with skeletal open bite. I Computer guided surgery. C Conventional articulating model surgery O Outcome measure: Outcome Name Measuring Device Measuring Unit (mm) O1 Accuracy Computer guided: Super-imposition of virtual surgery over the post- operative CT Scan composite models ( millimeter mm) Conventional : Super-imposition of scanned articulator with mounted casts in the pre-planned mock surgery over post-operative scanned mounted occlusion ( millimeter mm) O2 Anterior open Bite Closure Standardized Multi Scan CT (millimeter mm)
Interventions
PROCEDUREComputer guided surgery
Preoperative surgical simulation and immediate postoperative evaluation will be carried out using Multi Slice CT scan.Craniofacial images from 3D computerized tomography (3D-CT scan) can be used to create a 3D model, which can in turn be used for 3D Cephalometry measurements and surgical simulation.The process of 3D-model contains mounting of 3D virtual models in a 3D virtual articulator; and repositioning of 3D virtual models according to the STO then Fabrication of a 3D virtual intermediate surgical wafer; and materialization of the surgical wafer using a stereolithographic technique. The 3D model can produce actual movement of surgical cuts and movement of segments accordingly
PROCEDUREConventional model surgery
preparation for orthognathic surgery which involves diagnosis with 2D cephalometric radiograph, face-bow transfer and model surgery on plaster dental cast, and fabrication of intermediate and final occlusal splint.
DEVICE2D cephalometric radiograph
2D cephalometric radiograph
DEVICE3D computerized tomography
3D computerized tomography
Sponsors
Ammar Ribhi Abu shama
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Intervention model description
SM and VSM
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients suffering from skeletal open bite caused by vertical posterior maxillary excess and/or short mandible ramus. * Patients should be free from any systemic disease that may affect normal healing, and predictable outcome. * Required two jaws orthographic surgery
Exclusion criteria
* Patients with any systemic disease that may affect normal healing * Intra-bony lesions or infections that may retard the osteotomy healing. * Patient with bad oral hygiene. * Uncontrolled Diabetes mellitus.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy of movement of surgical segments in millimeter | up to 4 months | Computer guided Super-imposition of virtual surgery over the post- operative CT Scan composite models (millimeter mm). Conventional Super-imposition of scanned articulator with mounted casts in the pre-planned mock surgery over post-operative scanned mounted occlusion- accuracy would be compared by difference between Intervention and control in (millimeter mm). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Anterior open Bite Closure (positive overbite in millimeter) | up to 4 months | Standardized pre-surgery movement in amount of anterior open bite closure (mm) will be determined clinically and by radiograph. |
Contacts
Primary ContactAmmar R Abu Shama, PHD
Backup ContactMamdouh S Sayed Ahmed, Professor
Outcome results
None listed