Accuracy of Computer Guided Surgery (vs) Conventional Model Surgery in Treatment of Skeletal Open Bite

Accuracy of Computer Guided Surgery (vs) Conventional Model Surgery in Treatment of Skeletal Open Bite: A Randomized Clinical Trial

In patient with skeletal open bite, Dose computer-aided surgery enhances the clinical outcomes and accuracy versus conventional model surgery

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)

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.