MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

1. Recommended Field-of-View (FOV)

A. Partial Dentition

B. Edentulous

- FOV of 120 X 120

- Verify that the scan includes the entire jaw.

- FOV of 8 X 8 is conceivable if a 120 x 120 FOV is not achievable.

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

2. Tongue Position

- Tip of tongue must touch the vibrating line at the back of the mouth.

A. Mandible Scan

- Tongue must contact the floor of the mouth.

B. Maxillary Scan

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

3. Head Position

4. Mouth Opening

The patient’s head must be completely stabilized to prevent any motion artifacts.

Patient must be scanned with arches slightly opened (two fingers/3 cm). You may use a disposable syringe.

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

5. Separation Between Cheeks and Gums

6. Dentureless Procedure

Block the cheeks with a cotton roll to distance the soft tissues. Position between the cheek and the buccal side of the jaw.

The scan must always be performed without any type of removable denture.

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

7. Maxillary Scan

8. Slice Thickness

A maxillary scan must include at least half of the maxillary sinus to the occlusal plane.

Maxilla = 0.3-0.4mmMandible = No more than 0.2mm

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

9. Export the Scanner Files

Recommended Cone Beam Scanners

Export the scanner files in a single folder with set of single frame DICOM files.

Note: CT machines are also acceptable if a CBCT machine is not available.

▪ i-CAT

▪ J MORITA 3D Accuitomo 170

▪ KAVO KaVo 3D eXam

▪ KODAK K9500

▪ NEWTOM VGi

▪ PLANMECA Promax 3D MAX

▪ SIRONA Galileos Compact

▪ SOREDEX Scanora 3D

▪ VATECH Master 3DS

▪ VATECH PaX-Reve3DS

▪ VATECH PaX-Zenith3D

▪ SIRONA Galileos Comfort

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

Recommended Method

A Radiographic Template

Used for patients who have difficulty controlling their tongue or in order to achieve more accurate results. By placing radiopaque markers on the alveolar ridge and palate on the model, and picking them up in the radiographic template, we are able to perfectly match the model with the CBCT.

Preparation Steps: - Create a stone model.- Glue three pieces of 10mm gutta percha on the model, horizontally (for upper jaw place an additional one on the palate).- Scan the model with the gutta percha and save the STL file.- Produce a clear acrylic template on the model (pick-up gutta percha).- Polish.- Send with patient to CBCT.

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

Common Mistakes

Field of View Scan performed with a denture

Slice Thickness > 0.2 Tongue Position

MGUIDE Protocol for Cone Beam Radiographic ScanEDENTULOUS

Common Mistakes

Head Movements: