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ORIGIN Chroma Zirconia Coloring System

Instructions For Use PDF

Chroma Inhibitor (green)

Incisal Enhancer (1.0, blue)

A2 Shade (Level 70)

Incisal Enhancer (1.5)

A1 Shade (Level 70)

Sintered for 10 hours

 

Product Image

Zirconia Color Liquid Components

Name

Description

16 shades for Full Contour

(level 80, Slightly light)

Slightly light in chroma intensity. Developed for Full Contour restorations of 1.0 - 2.0 mm in standard thickness.

16 shades for Full Contour

(level 70, Standard)

Creates the same shades as the body portion of each shade tab. Developed for Full Contour restorations of 1.0 - 2.0 mm in standard thickness.

16 shades for Full Contour

(level 60, Slightly strong)

Slightly stronger in chroma intensity than shade tabs. Developed for usage with certain oven calibrations and uniquely higher temperatures.

16 shades for Full Contour

(level 45)

Strongest in chroma intensity. Developed for Copings and Substuctures of 0.4 - 0.5 mm in standard thickness

Incisal Enhancer

(0.5, 1.0, 1.5, 2.0 & 3.0)

Creates a gradually reduced chroma effect and increases translucent effects on the applied area of the incisal and occlusal ridges

Chroma Inhibitor

Creates balanced chroma between the pontics and abutments on bridge cases by reducing the chroma intensity on the pontics (large masses) that would otherwise be too strong.

3 Different Color Liquid Chroma Levels for Full Contour Crown

1

Slightly light

Liquid Chroma Level 80

Slightly lighter than body portion of shade tab

A1

A2

A3

A3.5

A4

2

Standard

Liquid Chroma Level 70 (Standard)

Same as body portion of shade tab

A1

A2

A3

A3.5

A4

3

Slightly strong

Liquid Chroma Level 60

Slightly stronger than body portion of shade tab

A1

A2

A3

A3.5

A4

Zirconia Finishing Instructions

Preparation for Receiving Chroma Color Liquids

1. Remove the Zirconia disc from your milling machine and prepare to cut the units from the zirconia disc at a work space that has a suction unit.

2. Using a H135F cross cut high speed bur, cut through the middle of the sprue’s that are attached to each restoration. Carefully allow the restorations to drop into your hand or onto a soft piece of foam under the zirconia disc.

3. After all zirconia restorations have been cut and removed from the zirconia disc, use a 9554M Universal Polisher at 8,000 -10,000rpm to re-contour the areas of the crown where the sprue’s were attached. A 9572M Blue Metal Polisher can be used for this as well.

 

4. Utilizing a small art brush, brush all zirconia dust from the inside and outside of the restoration. Be careful not to apply too much pressure.

Coloring of Full Contour Single Units

1. The Zirconia restorations are now ready to be colored. The first step in pre-sinter coloring of the zirconia is to brush Incisal Enhancer onto the incisal third of the crown. Apply Incisal Enhancer to lobes (incisal 1/3) and to occlusal ridges. It is recommended to apply two coats. More or less may be applied based on personal preference.

 

Note:

The purposes of this step are 1) to relatively reduce the chroma level of a certain hue (one of the 16 shades) in the incisal & ridge area as compaired to the body/gingival area, and 2) to create the grayish and blueish incisal translucent effects in the applied area.

 

The following recommendations are general guidelines for Incisal Enhancer use. Please refer to the specific corresponding instruction sheet included with each Origin zirconia disc.

 

Multiple levels of the Incisal Enhancer are available:

Shades

OM1, OM2, OM3, BL1

A1, B1, C1

A2, A3, B2, B3, C2, D2, D3

A3.5, B4, D4

A4, C3, C4

Level

Extra Light

Light

Medium

Intense

Very Intense

Type

Incisal Enhancer 1.0 - 1.5

Incisal Enhancer 1.5 - 2.0

Incisal Enhancer 2.0 - 2.5

Incisal Enhancer 2.5 - 3.0

Incisal Enhancer 3.0 - 3.5

2. Once the Incisal Enhancer has been applied, dip the zirconia restoration in the Chroma Color liquid of your choice (16 shades) depending upon the body shade you are trying to replicate. Submerge the restorations for a total time of 1 minute. Do Not Perform This Step Under Vacuum. Shading under a vacuum will result in darker shades.

 

Three chroma levels of Color Liquids are available:

Type

A2 (80)

A2 (70)

A2 (60)

Level

Light

Medium

Slightly More Intense

Shade Result

Lighter chroma of 16 shades

Standard chroma of 16 shades

Slightly more intense chroma of 16 shades

3. Remove the restoration from the Chroma Color Liquid using plastic tweezers and blot any excess liquid off of the restoration with a tissue or paper towel. Let the restoration air dry for 15 minutes on your clean bench and then place into sintering tray. Place restorations into the sintering tray so that margins are up and occlusal tables are on the beads.

 

4. Place your sintering tray into your sintering oven and begin the sintering process. Depending upon the sintering furnace and size of the case this process could range between 90 minutes to 14 hours. It is important to follow the instructions for the specific zirconia being sintered.

Coloring of Full Contour Bridge Cases

1. Begin your color staining process with a clean and zirconia dust free restoration.

2. Use Chroma Inhibitor for large mass units, such as pontics, to reduce the extra absorption due to its density (this extra absorbtion occurs with all coloring system on the market). This will create a chroma balance between the pontics and the abutments.

 

Note: In the pictures below, Chroma Inhibitor has been applied to the pontics on the bridge to the left, while the bridge on the right has none applied. Notice the increase in chroma of the pontics (#9, 10, 11) on the right. This is a typical problem inherent with current coloring systems available in the market that utilize a dipping method. The bridge on the left has a more uniform distribution of chroma throughout the restoration using the patent-pending ORIGIN Chroma Inhibitor method.

3. While holding the bridge in your hands, apply the green Chroma Inhibitor to the pontics and or other areas of large zirconia mass. The application of the Chroma Inhibitor liquid will neutralize the pigmentation of the main body color when the restoration is dipped. Apply this liquid with a #1 natural hair brush (Kolinsky or Sable Hair) over the entire surface of the pontics or areas of large zirconia mass.

4. After application of the Chroma Inhibitor you can immediately apply the Incisal Enhancer. The Incisal Enhancer will be applied in a similar manner as the Chroma Inhibitor but is limited to the incisal third, cusp tips, and occlusal ridges of the posterior units. Apply the Incisal Enhancer starting at the incisal edge and tapering downward into the body region in a vertical manner.

INCISAL ENHANCER

Thick Pontic Area

CHROMA INHIBITOR

Note:

The purposes of this step of applying Incisal Enhancer is: 1) to relatively reduce the chroma level of a certain hue (of the 16 shades) in the incisal & ridge area as compaired to the body/gingival area, and 2) to create the grayish and blueish incisal translucent effects in the applied area.

 

Multiple levels of the Incisal Enhancer are available:

Shades

OM1, OM2, OM3, BL1

A1, B1, C1

A2, A3, B2, B3, C2, D2, D3

A3.5, B4, D4

A4, C3, C4

Level

Extra Light

Light

Medium

Intense

Very Intense

Type

Incisal Enhancer 1.0 - 1.5

Incisal Enhancer 1.5 - 2.0

Incisal Enhancer 2.0 - 2.5

Incisal Enhancer 2.5 - 3.0

Incisal Enhancer 3.0 - 3.5

5. Once the Incisal Enhancer has been applied, dip the zirconia restoration in the Chroma Color liquid of your choice based upon the body shade you are trying to replicate. Submerge the restorations for a total time of 1 minute. Do Not Perform This Setp Under Vaccum. Shading under a vacuum will result in darker shades.

 

Note:

Large bridges may be dipped in a shade liquid that is one or two shades lighter for compensation of chroma intensity that may occur on the large Zirconia mass.

 

6. Remove the restoration from the Chroma Color Liquid using plastic tweezers and blot any excess clean bench and then place into sintering tray. Place restorations into the sintering tray so that margins are up and occlusal tables are on the beads. Some large bridges may require support in the lingual area. These bridges can rest on that support while sintering, as seen in these pictures.

 

7. Place your sintering tray into your sintering oven and begin the sintering process. Large Zirconia bridges require a longer sintering process to help eliminate warping during the sintering process.

 

Sintering Tips & Glazing Instructions

Please keep the following facts in mind when sintering:

  • A longer cycle time produces slightly stronger chroma after the completion of sintering (A2 ooks more like A2.5 and A3 looks more like A3.5)
  •  Zirconia restorations sintered in short cycle times (2-3 hours) look slightly weaker in chroma intensity. Some technicians prefer this since they can more easily create higher chroma on the gingival area and leave the light incisal.
  •  Older, slightly contaminated zirconia sintering ovens may not produce color results as accurately as intended. Be sure to check the sintering oven conditions if you do not get the intended result. Do this by sintering uncolored bleach pieces of zirconia to visually check the effects of the sintering oven.

Glaze Firing

After the restoration has been cleaned, the Glaze ring is conducted. Most of the time, the 16 color liquids along with the Incisal Enhancer and Glaze Paste are enough to create the intended color. Depending on the situation, the Stain and Glaze ring may be conducted together or separately one after the other.

 

We recommend using IPS e.max Fluo Glaze Paste for glazing purpose.

 

Firing parameters for the ORIGIN LIVE Zirconia Glaze ring

Glaze Firing

Preheating

Temp

B

[ C/ F ]

403 / 757

Drying

Time

S

[ min ]

6:00

Temp Speed

(Heat Rate)

t

[ C/ F /Min]

60 / 108

Final

Temp

T

[ C/ F ]

770 / 1418

Holding

Time

H

[ min ]

1:30

Vacuum

Start

V1

[ 450 / 842 ]

450 / 842

Vacuum

End

V2

[ C/ F ]

770 / 1418

Below is the typical example of the screen copy for the e.max Glazing Paste program adjusted for zirconia glazingPlease note:

  • Do not apply vacuum during the glazing stage. This will help ensure a consistent chroma level as intended. Test results show that even the same brand of ovens, depending on their age and when the last calibration was done, may produce a slightly different level even when using color liquid and  the same zirconia. This could be solved by eliminating the vacuum process.
  • With no vacuum, the glazed surface may become a little less glossy. This can be overcome, however, by using less glazing liquid when mixing with the glazing paste.
  • Keeping the high temperature at 800 ˚C is also important. Lower temperatures produce higher chroma (about 1 shade stronger), and higher temperatures (850 ˚C for example) produces lower chroma (lighter shades).
  • Make sure the full contour restorations and/or substructures are elevated on the ring peg and NOT directly on the tray. This will ensure correct shading at a recommended optimal temperature of 770 °C. If the restorations are directly on the tray, the resulting shades are lighter than intended.
  • Chroma Level(CIE a*, b*, C)770 °C820 °CGlazing TempIn A shades particularly, non-elevated full contour crowns can have effect by not accurately depicting the redish brown color which is  an important characteristic of the A shades (the yellowish brown color is still exhibited). ORIGIN color liquids have been developed to produce the corrcect shades based on the elevated position of the full contour crowns about / inch o the glazing tray. It is known that the temperature dierence is about 10 - 20 °C degrees between the elevated and unelevated positions.
  • Do not overheat the full contour restorations during the glazing cycle time. Utilizing Higher temperature than recommended (770 °C) would produce a lighter chroma level. Test results using the VITA Easyshade Compact, a spectrophotomer, conrm this result.
  • Do not put too many full contour crowns on the tray at a time. The  recommended number of crowns per tray is about 5. Too may full  contour crowns will produce a weak chroma due to the lack of heat for each crown from the coil of the oven.

Factors that Affect the Final Color of Zirconia Restorations

1. Coloring liquid

Origin® CHROMA™ coloring liquid was developed based on zirconia powder processing unique to ORIGIN® brands of best results, please match Origin® zirconia with the corresponding Origin® CHROMA™ coloring system.

 

2. Sintering oven

The Origin® zirconia coloring system, CHROMA™, was developed based on the test results sintered from the ORIGIN®􀀆 DuoTron™ oven which is one component of the Origin® CAD/CAM system. The DuoTron™ gives consistent and reproducible􀀆 results over long periods of time. Test results show that conventional ovens with a longer sintering cycle (7-8 hours) give as result that is one shade darker (or at least a half shade darker) as compared to when the DuoTron™ oven is used, utilizing a􀀆 faster cycle.  So if you are sinteing Origin® zirconia colored with the Origin® CHROMA™ system on longer cycles, you will likely􀀆 need to use level 80 liquid instead of the standard level of 70.

 

3. Glazing temperature

The higher glazing temperature you use, the lighter color your glazed zirconia will have. The high glazing temperature for Origin® zirconia colored with the Origin® CHROMA™ system is 800 °C with a holding time of 1min 30 seconds. The proper glazing temperature schedule is introduced on page 12 of the Instructions For Use for the ORIGIN® 􀀉irconia & ORIGIN® CHROMA™ Zirconia Coloring System.

 

4. Glazing with vacuum

Test results show that using vacuum during glazing will create lighter shades in the final glazed zirconia. In addition, the vacuum level of different brands of glazing ovens differ from each other. As a result, we have eliminated this varying factor from our standard process and recommend that you do not use vacuum during glazing. Your glazed zirconia will still look great at the glazing temperature of 800 °C.

 

5. Light conditions when checking shade

Color perception of the final glazed zirconia restoration depends on many factors including: the light source (natural light, fluorescent light, incandescent light), light intensity (3000 K - 6500 K), abundance of light in a room, observation angle, etc. The Origin® CHROMA™ zirconia coloring system was developed based on the following parameters.

  • light source: Natural, full-spectrum light
  • light intensity(color temperature): 5000 K (3000K-Soft white, 3500-Neutral, 4100 K- Cool white, 5000 K-Natural light, 6500 K - Daylight)
  • color reproduction capability (color rendering index) of light source: 90%
  • observation angle of the restoration: combination of straight angle and side angle
  • color determination: combination of experience of skilled ceramist and colorimeter (VITA Easyshade Compact)

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