Simplant/Facilitate™ CT Scan Guide for Radiologists

General

• Patient Scan – with the template firmly fixed in the patient’s mouth, as instructed by the dentist.
• Dual Jaw Scans (where necessary) – Mandible and Maxilla must be scanned separately.
• Remove metallic objects such as jewelry and metal prostheses.

Patient Preparation, Positioning and Scanning

a) Template Placement: Ensure that the denture appliance is fixed and stable in the patient’s mouth. The technologist should not perform the scan if the appliance does not fit easily and soundly in the patient’s jaw - contact the dentist.

b) Patient Positioning: Select 3D Standard program. Select“teeth” targeting. Select FULL for diameter and FULL for height. If the lower jaw (mandible) is to be scanned, position the chin cup in the highest position on the patient positioning mask. For upper
jaw (maxilla), position the chin cup in the lowest position in the patient support mask.
Select the “Go 3D” button on the graphical user interface (GUI). Select NORMAL resolution. Have the patient enter the machine either standing or sitting in a chair. Center the patient so that the upper laser divides the face into two symmetrical halves (midline). The patient’s head should be tilted to minimize the interference of the jaw and teeth images with artifacts stemming from metal fillings. It’s best to position the occlusal plane parallel to the floor. NOTE: Preview function option can be enabled to check scout images for patient positioning. The position of the layer light denotes the front of the volume being scanned and should be placed touching the anterior most surface of the teeth or scan appliance.
Any metal objects such as jewelry should be removed from the scanned region.

c) Patient Scanning: After finalizing the positioning process, ask the patient to close their eyes, remain motionless and not swallow during the scan. Continue to perform the scan.

Data Cleanup and Export

After the scan is complete, clean and export all the volume data as follows:
a) Select the Artifact Removal button on the top toolbar of the Romexis software.
b) Click Apply to run artifact removal
c) Click Export button on the top toolbar of the Romexis software.
d) Select Single Frame DICOM (1), Select export path (2), select 0.32mm slice (3) (if not already selected) and give a file name (4) such as“Patient Scan_Mandible”. Click OK (5).
e) Repeat for each target being aquired
Note: the data for each jaw should be saved in separate data sets