Metal Scan Guide
Perform the scan according to the following steps.
1. Calibrate the scanner.
2. If there is a bright external light source, such as a dental light, that may interfere with the scan area, adjust the angle of the light or temporarily turn it off. Strong external light reflected from the metal surface may interfere with scanning.
(However, it is not necessary to turn off the entire operatory lighting.)
3. Check that the “Metal Scan” feature is turned on.
(Settings > Scanning Performance > Metal Scan)
The Metal Scan feature helps capture data more easily from metal areas, such as metal crowns, scan bodies, and abutment caps, as well as areas with bleeding. This feature is turned off by default and must be enabled manually in Settings.
When metal restorations, such as crowns, occupy more than a certain percentage of the scan area, parameters optimized for metal scanning are applied automatically. For cases without metal, leaving this option enabled does not affect the scan.
When the feature is enabled, a three-level adjustment slider ranging from Precision to Coverage appears below it. The default position is the center. Begin scanning with the slider in the center, and then adjust it according to the condition of the acquired data.
- If metal areas are captured well without excessive noise → Keep the slider in the center
This is the default setting, which balances noise reduction with metal data acquisition. No additional adjustment is necessary. - If excessive unwanted noise appears around metal areas → Adjust the slider toward Precision
This setting reduces noise by filtering the data more strictly. However, relatively less data may also be captured from metal areas. If any gaps remain, perform additional scans from multiple angles. - If gaps remain in metal areas or data continues to be missing → Adjust the slider toward Coverage
This setting accepts a broader range of data, making it easier to capture metal areas. However, some noise may also be included. Check the acquired data for any unwanted noise.
ℹ️ Note
The slider adjusts the filtering intensity applied to scan data during scanning. Precision does not always mean higher final accuracy. If the same area is scanned sufficiently and data processing is completed, the final accuracy is the same for Precision and Coverage.
Using the Metal Scan feature may temporarily reduce the frame rate when scanning metal areas or areas with bleeding. This behavior allows the scanner to capture more data from these areas. Non-metal areas are scanned as usual.
Orthodontic brackets may be recognized as metal, which can reduce the frame rate during scanning. If you do not need to capture the detailed shape of the brackets, turning off the Metal Scan feature can help provide a smoother scanning experience.
Settings | Bleeding | Bleeding + Metal 1 | Bleeding + Metal 2 |
OFF | |||
ON |
4. Check that the Active Noise Filtering (beta) feature is turned on.
(Settings > Scanning Performance > Active Noise Filtering (beta))
During scanning, noise displayed in metal areas and empty space is removed. Any noise that is not removed during scanning is removed after scanning is stopped.
5. Before scanning, completely dry any moisture or saliva on the metal surface.
6. Select “Reliability Map” in “Data Display Mode.”
Scan with “Reliability Map” enabled to check the reliability of the acquired scan data in real time. Scan the area from various angles for approximately 2–3 seconds to ensure that sufficient data has been collected. Reduce the distance between the scanner tip and the scan target.
ℹ️ Note
Directing light perpendicular to a metal surface, such as a gold crown or amalgam restoration, may cause the light to reflect directly back into the scanner’s mirror and sensor, interfering with scanning. Scan the adjacent teeth or abutment area first. Then, when scanning the metal area, acquire the data by slowly tilting the scanner from side to side at a consistent speed.
7. If there is still insufficient data in the metal area, click “Optimize” to align the acquired scan data, and then scan the area again.
Ceramic Scan Guide
Follow the same sequence described in the Metal Scanning Guide above when scanning ceramic surfaces. However, the “Metal Scan” feature does not apply to ceramic scanning, so skip the Metal Scan setting in step 3.
After completing steps 1 and 2, continue with the remaining steps in order, beginning with the “Active Noise Filtering (beta)” setting in step 4.
Related webinar
Metal Scan (29:10s ~)
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