1. TRIOS Shade Measurement
Requirements, Cleaning,
Scanning tips etc.
TRIOS Software color measurements
Source: LHE/SEL
Editor: BBE

2. TRIOS Shade Measurement
Shade measurements with TRIOS® Good practices for getting accurate shade measurements using TRIOS

3. Requirements for Shade measurements
TRIOS Shade Measurement
Requirements for Shade measurements
Shade compatible scanner. *
TRIOS Color Cart, Color Pod, Color CIK
TRIOS software ( or later)
Color calibration kit. *
NOTE* See mail ‘TRIOS Color Calibration Kit now available for shipping’ of for details

4. Color Calibration Kit Don’t touch by hand
TRIOS Shade Measurement
Color Calibration Kit
Color calibration kit:
Left: Color calibration target
Middle: Tip-adapter
Right: Combined
Don’t touch by hand
Clean with filtered air at low pressure
Store in the protective sleeve and out of direct sunlight

5. Unclean Mirror of Tip Unclean mirror of tip
TRIOS Shade Measurement
Unclean Mirror of Tip
Unclean mirror of tip
Some autoclaves leave stains on the mirror. Usually doesn’t affect the scanning, but the strict tolerances of the color calibration may cause the color calibration to fail.
Fix: Clean the mirror with a soft cloth and run the color calibration again. If this is not successful, try with a new tip, which has not been autoclaved.
Mirror with deposits
Clean mirror
Note: It is easy to inspect how clean the mirror is by attaching it to the scanner and then starting the scanner. If the mirror is clean, you will see no haze or dirt on the mirror.

6. Unclean Front Glass Front glass of inner black tube of scanner
TRIOS Shade Measurement
Unclean Front Glass
Front glass of inner black tube of scanner
Over time, a thin film of residue will deposit on the front glass of the inner back tube of the scanner. This film is not visible to the naked eye, so it is not possible to detect it.
Fix: Wipe the front glass with a dry optical cloth.

7. Unclean Calibration Target
TRIOS Shade Measurement
Unclean Calibration Target
Areas that must be free from dust, dirt etc.
The color calibration target may be unclean. Inspect both sides for dust, dirt etc.
You should never under any circumstance touch the optical components of the color calibration target. Clean only with filtered air at low pressure

8. TRIOS Shade Measurement
External Lights?
External light may affect the shade measurement! It is important to turn off all intense lights prior to scanning. Turn off the dental lamp, as the intensity is very high. Normal room lighting is not a problem for the TRIOS®.

9. TRIOS Shade Measurement
First Scan Strategy
Scan preparation first, and then lock the margin line
Step 4:
Select the shade icon to the right on the TRIOS® monitor. A blue overlay will appear where the scan quality is not sufficient for performing shade measurements. Scan the tooth you want to use for shade measurement until blue overlay clears out. (please refer to section “Adding shades to the scan”)
Step 1:
Remove the retraction cord and scan the preparation immediately
Step 2:
Lock the margin, using the lock tool.
(paint the area around the margin)
Step 5:
Place shade measurement circle
You find the lock tool under the tool bar button ‘Tools’
Step3:
Scan the rest of the arch

10. Second Scan Strategy Scan margin as the last thing you scan
TRIOS Shade Measurement
Second Scan Strategy
Scan margin as the last thing you scan
Step 4:
Trim margin away
Step 1:
Scan arch with cord in place
Step 2:
Select the shade icon to the right on the TRIOS® monitor. A blue overlay will appear where the scan quality is not sufficient for performing shade measurements. Scan the tooth you want to use for shade measurement until blue overlay clears out. (please refer to section “Adding shades to the scan”)
Step 5:
Remove cord and scan margin immediately
Step 3:
Place shade measurement circle

11. Third Scan Strategy Use a pre-preparation scan TRIOS Shade Measurement
Step 1:
Add pre-preparation scan on order form
Step 4:
Place shade measurement circle on the pre-preparation scan
Step 2:
Go to the pre-preparation scan page and scan the arch
Step 5:
Go to preparation scan page and scan the preparation only
Step 3:
Select the shade icon to the right on the TRIOS® monitor. A blue overlay will appear where the scan quality is not sufficient for performing shade measurements. Scan the tooth you want to use for shade measurement until blue overlay clears out. (please refer to section “Adding shades to the scan”)

12. TRIOS Shade Measurement
Adding Shades to a Scan
3 easy steps to obtain a scan quality that is sufficient for adding shade measurements:
Select the tooth to measure shade
If the center of this tooth has blue overlay you will need to scan some more in this region until the blue color clears up: This is done by adding more sub scans and from different angles. A fast way to do this is to move the scanner 90 degrees slowly from occlusal to buccal or vice versa. See image below
Note that you do not need to remove the blue overlay completely, just enough to place shade measurement circle(s) on the center of the one tooth selected for shade measurement
Example of blue overlay (Shade scan quality)

13. Defining the Shade measured by TRIOS
TRIOS Shade Measurement
Defining the Shade measured by TRIOS
The shade value guides have a fixed number of shades.
In some cases there will not be a shade that matches the captured color perfectly.
The TRIOS® always gives you the best matching shade.
The shade reported by TRIOS® always corresponds to the circled area in the figure

14. Supported Shade System
TRIOS Shade Measurement
Vita 3D Master
Vita Classical

15. Warning indication if rule is violated
TRIOS Shade Measurement
Placing the shade measurement circles
Where to place the shade measurement circle?
Warning indication if rule is violated
In areas where the shade inside the measurement circle is uniform
In areas with sufficient scan quality.
When you have turned on the scan shade-quality overlay, the areas with sufficient quality are the areas with no blue overlay
In areas with regular tooth color.
Areas with irregular tooth colors are gingiva, heavily discolored stumps etc.
Note: This also implies that you should not place the measurement circle at
Interproximal areas. These are usually colored blue, indicating insufficient scan quality for shade measurement)
Translucent areas, typically close to incisal edge

16. TRIOS Shade Measurement
Adding HD Photos
The shade of the tooth is provided by the shade measurement functionality of the TRIOS®.
In most cases, a photo that show aesthetic details in the teeth (e.g. internal cracks, mineralizations, etc.) will accompany the shade information. The source of this photo may be an external SLR camera and the photo is transferred to the lab by means of e.g. .
In TRIOS® you may take one or more HD photos of the teeth. These HD photos are directly embedded in the order and consequently no separate ing is required.
Each HD photo is put on the actual 3D model, so that you may inspect the HD photo on the real tooth geometry.
Example of HD photo in combination with shade measurement circles

17. When to Color Calibrate?
3Shape
When to Color Calibrate?
Color calibrate the scanner before each scan for optimal color quality if you intend to use Shade Measurement.
The mirror in the tip is almost never 100% clean, small variances could have an impact on the Shade Measurement.
Color calibration has a weekly reminder. Shade Measurement will be disabled if the scanner has not been color calibrated for 30 days.

18. Technology designed the way you work
3Shape
Technology designed the way you work

19. Technology designed the way you work
Questions
Questions
What is not part of the requirements for shade measurement?
A Shade compatible scanner
TRIOS inbox
TRIOS S/W version or higher
Color Calibration kit
Technology designed the way you work

20. Technology designed the way you work
Questions
Questions
What is this accessory?
The Standard Calibration kit
The Lens Cleaning kit
The Color Calibration kit
The HD photo Enhancer kit
The Autoclavable kit
Technology designed the way you work

21. Technology designed the way you work
Questions
Questions
Does external lights affect the shade measurement?
No, intra oral scan is not affected by external light.
No, not with the dental lamp turned on
No, but humidity can affect the shade due to water droplet in the air
Yes, always turn off all external lights
Yes, but room lighting is OK
Technology designed the way you work

22. Technology designed the way you work
Questions
Questions
The Shade icon overlay the teeth with a blue area indicating?
That it has enough data to accurately measure shades
That is has not enough data to accurately measure shades
Separate the tissue from the teeth helping to place the shade circle on the teeth.
That it has enough data to snap the upper and lower scan together completely avoiding the bite scan.
Technology designed the way you work