KATANA Zirconia YML (CB)
This innovative raw material combination of highly translucent zirconia with high strength will empower your dental lab.
KATANA™ Zirconia YML delivers efficiency, clarity, simplicity and precision in handling without compromising the quality of the outcomes!
The entire indication spectrum can be covered due to the combined high translucency and high strength.
KATANA™ Zirconia YML matches three raw materials with different yttria contents combining a well-balanced color/translucency and flexural strength gradation.
The seamless multi-layered technology eliminates visible transition lines, emphasizing natural color and translucency, ensuring a simplified, time-saving procedure.
The fitting accuracy of restorations after the final sintering process reduces remanufacturing risks. No waste of time and materials.
Re-make and rush cases? High-speed sintering (54 minutes) offers complete new opportunities. Finish the work easily within one day.
Based on KATANA™ Zirconia YML A3 with CERABIEN™ ZR FC Paste Stain
Courtesy of DT Marco Stoppaccioli – L’Aquila
KATANA™ Zirconia YML was developed based on the concept of being “lifelike“, that accurately and naturally expresses the color and translucency of natural teeth.
To provide high translucency that harmonizes with the anterior teeth.
To provide seamless color and translucency towards the Enamel Layer.
To provide deep and vivid color while reducing whitening.
Exceptional design flexibility is offered – from veneers to full-arch restorations. In each case, you may choose a monolithic, cut-back or framework design with the appropriate fabrication procedure depending on individual needs.
With its different composition layers, high precision shrinkage and stable CTE values are achieved by controlling the whole process from refining to molding. Extensive quality control in combination with unique in-house developed raw materials deliver our best zirconia of all time.
We distinguish ourselves by this unique in-house production of zirconia raw materials. It guarantees a material you can always rely on.
KATANA™ Zirconia YML and STML are shown below with body layer thickness adjusted to 0.4*mm for YML, and 0.8*mm for STML. The body layer of YML can be adjusted thinner than that of high translucency zirconia, increasing its translucency even more.
*This is the minimum thickness recommended by the manufacturer.
KATANA™ Zirconia YML shows sharp margins and less chipping leading to better marginal fit. Thinner restorations show that this good result in sharp margin supports the use of KATANA™ Zirconia YML.
Even if the restoration margins have been milled to a very thin profile, they still show smooth margins without any chipping.
Outstanding quality paired with velocity is an absolute unique feature
of KATANA™ Zirconia over all competitive products.
The above sintering recommendation is only a guideline; some adjustments may be required depending on each individual furnace.
In case of 54, 90-minute sintering, if it cannot be set according to the schedule, it cannot be sintered.
Select the target shade and the correct disc thickness to achieve an
appropriate graduation between crown length, enamel and body (dentin).
KATANA™ Zirconia YML color should be set for glazing, and for polishing, it tends to become darker during the polishing procedure. Therefore, select lighter shade than the target shade color.
Testimonials
Professor Dr. Florian Beuer
Germany
“New grade zirconia material that combines strength and translucency in one disc. It provides stability where necessary and aesthetics where we need them. The best of both worlds.”
Nondas Vlacholoulos, MDT
Greece
“One material for every indication with the highest aesthetics, strength and reliability.”
Daniele Rondoni, MDT
Italy
“The request of zirconia evolution is a perfect combination of optical properties and strength. Finally, we can have esthetics and durability for our restoration with KATANA Zirconia YML thanks to Kuraray Noritake Dental's new technology.”
Andreas Chatzimpatzakis, MDT
Greece
“If you ask me Y I use YML? The answer will be... Υπεροχή (η) [Yperochí ]: Excellence .... in aesthetics, strength and reliability!!”
Martin Laurik, MDT
Estonia
“The superior esthetics of Katana YML is a great option for monolithic crowns while still offering reliable strength in demanding situations.”
Michael Braian, MDT
Sweden
“This is what I have been looking for, a multi-layer zirconia with amazing strength from top to bottom. In some cases doing surface characterization feels like overkill.”
To order, choose from the following options.
Technical guide KATANA™ Zirconia YML (EN)
Technical information update KATANA™ Zirconia YML (EN)
Troubleshooting guide KATANA™ Zirconia Discs - Desktop version (EN)
Troubleshooting guide KATANA™ Zirconia Discs - Mobile version (EN)
KATANA™ Zirconia Discs processing handbook - Mobile version (EN)
Brochure KATANA™ Zirconia YML (EN)
Brochure KATANA™ Zirconia Discs (EN)
KATANA™ Zirconia Discs processing handbook - Desktop version (EN)
We’ve put together a list of answers to the most pertinent questions.
The existing KATANA™ Zirconia multi-layered materials (KATANA™ Zirconia UTML/ STML/HTML) have a color gradation, while the base material of the respective type is the same for all layers. The strength and translucency are the same for all layers of the respective type.
KATANA™ Zirconia YML is different in this regard. It is the latest KATANA™ multi-layered disc with a balanced combination of color/translucency and flexural strength gradation. Please refer to chart below, for the overview of the mechanical properties and translucency levels of each type of KATANA™ disc.
“All-In-One” means all application range with one disc. KATANA™ Zirconia YML is characterized by a unique raw material combination of highly translucent zirconia with high strength, which are integrated together by an advanced manufacturing technology. As an “All-In-One” solution, KATANA™ Zirconia YML offers exceptional design flexibility, from long-span full-arch monolithic bridge restorations up to highly aesthetic anterior monolithic crown restorations.
From complicated full-arch restorations to highly aesthetic demanding anterior single-unit restorations, an exceptional design flexibility is available. In each of these cases, you can choose a monolithic, cut-back or framework design with the appropriate fabrication process, depending on your specific needs.
Framework
Long span bridge
Anterior / posterior crown
Inlay, onlay
Laminate veneer
KATANA™ Zirconia is characterized by the unique in-house production of zirconia raw materials. By using materials that Kuraray Noritake Dental Inc. has developed themselves specifically for the KATANA™ Zirconia series, completely different from those of other competitors, it is possible to realize high-speed sintering without compromising the aesthetic and mechanical properties.
KATANA™ Zirconia YML is available in a shade selection of 14 shades, which are adapted to the VITA-classical A1-D4™ Shade Guide. Please refer to the following table overview for more information about shape and disc-thickness.
Shade / Thickness selection
Please observe the following guidelines of applicable minimum wall thickness:
The thickness specifications apply to full zirconia restorations. The thickness of build-up porcelain is not included. The minimum wall thicknesses apply to full zirconia restoration or to frame-work for build-up porcelain restoration. In these cases, 0.4 mm (anterior) or 0.5 mm (posterior) should be kept for the area located in the bottom (lower) half of the disc. If full zirconia veneer restoration is used for combination with the porcelain, 0.8 mm or more should be kept for the area located in the upper half of the disc.
Please observe the following guidelines of applicable cross-section wall thickness:
3 units or less Connector cross-section area can be placed in any layer.
A
The maximum number of pontics is one. Not suitable for a cantilevered bridge. 4 units or more - at least 50% of the connector cross section should be positioned in the bottom (lower) half of the disc.
B
The maximum number of pontics between two abutments (teeth) should not exceed two. For cantilever bridge, keep the number of pontics at one. In this case, the connector cross-section must be at least 12 mm.
Please observe the following of sintering schedule:
The above sintering recommendations represent only a guideline; depending on each individual furnace and condition, some adjustments might be necessary. If the 54 or 90-minute sintering program is not programmable in your furnace, it is not possible to set the furnace according to one of these schedules.
No, this is not possible. 54- or 90-minute sintering is only possible for up to a three-unit bridge restorations.
The body layer has a higher content of tetragonal crystals, while the cubic content gradually increases towards the enamel layer.
KATANA™ Zirconia YML can be finalized by glazing, staining or porcelain application. With an integrated translucency, color and strength gradient, KATANA™ Zirconia YML is designed to achieve highly aesthetic results by simply using the glazing technique. In case of additional color adjustments, characterizations or individualizations are desired, the unique CERABIEN™ ZR (CZR) FC Paste Stain can be used to achieve the final high aesthetic result according to your preferences.
Of course, this is possible. For this purpose, the desired high-polished finishing can easily be achieved with the PEARL SURFACE™ Z (polishing paste). Please note that the shade of KATANA™ Zirconia YML should be pre-set for glazing, due to the fact that zirconia has a tendency to become darker during the polishing process. Therefore, select in advance one shade lighter than the target shade.
It is generally not recommended to wet-mill KATANA™ Zirconia, because the desired aesthetic effect may not be achieved due to the possibility of contamination, which can reduce the translucency.
If a restoration is contaminated before sintering, it will cause white spots on the restoration during the sintering process. Causes for this are for example oily fingers, excessive purging with high air pressure, residuals of silicon point substance that has been applied to the pre-sintered zirconia during adjustment procedures, the use of scanning spray, or the insufficient removal of zirconia powder that has been created during the milling process/removal of sprue. Please take care not to contaminate the restoration.
This is not recommended, as the desired level of translucency or color development cannot be achieved.
The sintering parameters differ from other manufacturers’ zirconia products. The maximum sintering temperature for the 54-minute program is 1600°C (2912°F), for the 90-minute program 1560°C (2840°F) and for the 7-hour program 1550°C (2822°F).
Note: The material is removed from the furnace at 800°C. High-speed sintering is possible for up to three-unit bridge restorations.
Any sintering furnace capable of setting the KATANA™ Zirconia YML sintering program according to its technical specifications can be used, regardless of the manufacturer. If the KATANA™ Zirconia YML sintering program is not programmable in your sintering furnace, it is unfortunately not possible to set the furnace according to this schedule.
Yes, this is possible using several options in your CAD/CAM software. These options allow the designer to change the restoration position within the disc profile to achieve the best gradation map for the restoration. Please refer to our “Handy Chart” as a guideline for this.
The side on which a “occlusal surface” sketch has been imprinted represents the upper layer (the enamel layer).
