Masking of Certain Areas in Live View, Making Data Acquisition Impossible

Symptom

In Live View, a specific area is continuously masked (filtered) in a straight-line shape, and scan data cannot be obtained in this area.

When the masking (filtering) option is turned off, a shadow in the shape of a straight line is visible in the affected area.

Symptoms Displayed on the Model	Symptoms in the Oral Cavity
A straight-line shaped masking (filtering) is observed.	A straight-line shaped masking (filtering) is observed.
When the masking function is turned off, a shadow is visible in the affected area.	A straight-line shaped masking (filtering) is observed.

Points to Check

1. Camera Area Out of Range (Region of Interest, ROI Out of Range)

This issue may occur if the scanner exceeds the camera’s field of view. 

2. Scan Tip Deformation

Deformation of the scan tip may cause the edge of the tip to be captured by the camera, leading to the formation of shadows.

Test using different scan tips to check if the issue persists. 

3. Recommended Diagnostic Test Environment:

Rather than an intraoral scan, use a dental stone model to conduct a test with the smart filtering option set to "No Filtering." This will help diagnose the issue more easily. 

Troubleshooting

1. Check Scan Tip and Optical Window Condition

If possible, perform the test with a new scan tip. Clean both the scan tip and optical window before performing the diagnostic test. 

Contaminated Optical Window	Clean Optical Window
Contaminated Live View	Clean Live View

2. Diagnostic Test

While scanning a dental model, check if any area is continuously masked (filtered). When the masking function is turned off (Hide Masking), check for a straight-line shadow in that area. 

Live View with Hide Masking	Live View with Show Masking

3. Check ROI Area Using HD Camera

Use the HD camera to confirm the ROI area.

1) Prepare a sheet of paper with text written on it.

2) Launch Medit Scan for Clinics and activate the HD camera feature.

3) Position the scanner tip so that the text on the sheet is clearly visible, indicating "perfect focus." 

4) In this focused state, check if a shadow appears at one corner.

Abnormal ROI Scanner	Normal ROI Scanner

⚠️ Caution

If you're unfamiliar with this process, results may vary, so it is essential to be familiar with the procedure before performing the test. The most important part of this test is achieving "perfect focus." Adjust the scanner position to make the text or reference lines clear, then check the ROI area.

When focus is correct	When focus is out of focus