KATANA Zirconia Block

KATANA™ Zirconia Block for bridges allows to mill up to 3 unit bridges to treat the patient on a single visit by using Dentsply Sirona’s CEREC system. These bridges can even be used in the masticatory molar area. Kuraray Noritake Dental's zirconia and multilayer technologies allow the user to fabricate zirconia restorations with natural shade gradation and translucency close to natural teeth.

The product consists of four different colored zirconia. They are arranged in the order of 35% (Body Layer), 15% (Transition Layer 1), 15% (Transition Layer 2), and 35% (Enamel Layer). Please refer to the product catalog for details.

We believe that STML is easier to use at the chairside because it has a well-balanced combination of translucent and mechanical properties.

This product has a higher mechanical strength (763 MPa) than IPS e.max CAD (519 MPa), which is a lithium disilicate glass*. This product has a multi-layered structure, so it is easier to fabricate a more natural looking restoration than with IPS e.max CAD, a single layer block.

*Data source: Kuraray Noritake Dental Inc. According to ISO 6872: 2015.

For restorations with a thickness of less than 6 mm^*, our product can achieve high translucency after only 18 minutes^** of high-speed sintering.

* CEREC 5.0.2 / inLab 19.0 software versions or newer are necessary.

** In case of dry milling

KATANA™ Zirconia Block is used for the fabrication of all-ceramic restorations (frameworks, FCZ crowns, FCZ bridges, onlays and veneers).

For this product, you need a minimum wall thickness of 0.8 mm for anterior crown restorations and 1.0 mm for posterior ones.

12 mm² for anterior bridges and 16 mm² for posterior bridges.
Please refer to the product catalog for details.

14 shades. Please refer to the product catalog for details.

For 12Z, up to 12 mm and for 14Z it’s up to 14 mm. After sintering, the actual size of the restoration will be changed to roughly 80% of each block size referred to in the product catalog. Block sizing may have individual slight differences, but will be adjusted automatically by the software.

32 mm with sprue.

Up to 3 units is indicated. Please do not make 4 + unit bridge even if it can be designed by software.

They're not indicated. Please do not make a cantilever bridge, even if it can be designed by software.

Approximately 5 minutes for intraoral scanning, 10 minutes for design, 15 minutes for milling (45 minutes for 3 unit bridges), 18 minutes (30 minutes for 3 unit bridges) for sintering and 10 minutes for polishing or 20 minutes for glazing.

Pre-sintered zirconia is milled and then fully sintered afterwards.

We recommend dry milling. It is possible to mill this product using wet milling, but wet milling might achieve a lower level of translucency than expected, if cooling water is contaminated by silicabased glass ceramics (lithium disilicate glass, etc). Besides, when you use wet milling, it takes approx. additional 10 minutes to complete the sintering process, as a drying step is added into the process.

If using KATANA™ Zirconia Block with a glass block and resin block in the same machine, it is necessary to wash the milling chamber and filter, and replace the cooling liquid. Insufficient cleaning of the chamber or filter will result in restorations with lower translucency.

It can be used with the CEREC inLab software (after version 18.1).

Yes. A 50-minute sintering schedule is available for all other chairside furnaces, such as the Programat CS4 from Ivoclar Vivadent.

If the scanning process failed, please type in the 7-digit number. If there are only 6 digits on the block, please enter a space at the end. Please contact Dentsply Sirona for details.

Up to 3 crowns or one 3-unit bridge.

It is possible to use Programat CS4 with 50 minutes sintering. Please refer to the product catalog for details. If you use wet milling, drying process for 10 minutes at 200 degrees is necessary.

Up to 6 crowns or two 3-unit bridges.

It takes longer sintering time to achieve the same level of translucence as our product. Our product is made of zirconia raw materials developed by Kuraray Noritake Dental to achieve high translucency in short time sintering.

Yes, it can be layered.

After occlusal adjustment, finish the restoration by glazing
(with spray or paste) or polishing.

Adjust the restoration under running water or wet condition.

After occlusal adjustment, polish the opposing areas using a silicon point containing diamond or a paste containing the same, followed by spray or paste glazing.

We recommend CERABIEN™ ZR FC Paste Stain or Dentsply Sirona's CEREC SpeedGlaze for the CEREC SpeedFire furnace.

It is possible to use Dentsply Sirona's CEREC SpeedGlaze. We do not have any data about Ivoclar Vivadent's glaze material. Please follow the Instructions for Use of the glaze material.

About 20 to 25 minutes with CERABIEN™ ZR FC Paste Stain (approx. 13 minutes for baking); about 15 to 20 minutes with Dentsply Sirona's CEREC SpeedGlaze (approx. 10 minutes for baking).

After occlusal adjustment, polish the whole restorations with silicon points containing diamond (KATANA™ Twist DIA, etc.), in three steps of the level of polishing, starting from coarse to medium to fine.

We recommend to use a silicon point containing diamond such as KATANA™ Zirconia Twist DIA or a polishing Paste material containing diamond particles, such as Pearl Surface Z (Kuraray Noritake Dental Inc).

Please select a shade one level brighter than the targeted shade color, because the restoration will come out a little darker.

It is possible to do this with CERABIEN™ ZR FC Paste Stain.

Yes. But please use a Stain indicated for zirconia.

The product itself doesn’t have fluorescence, but it is possible to add fluorescence into the restoration with CERABIEN™ ZR FC Paste Stain.

Please use cements that contain MDP, such as PANAVIA™ V5 and PANAVIA™ SA Cement Universal.

PANAVIA™ V5: After sandblasting and clean it, apply CLEARFIL™ Ceramic Primer Plus, then dry.

PANAVIA™ SA Cement Universal: No treatment necessary.

PANAVIA™ V5: Apply PANAVIA™ V5 Tooth Primer and dry.

PANAVIA™ SA Cement Universal: No treatment necessary. We recommend the usage of CLEARFIL™ Universal Bond Quick to enhance bond strength to tooth structure.

Yes, you can.

Among other possible items: AC Omnicam/Primescan, CEREC Milling units (Dry Milling Suction Unit for dry milling), CEREC SpeedFire or other chairside furnace, etc. Please ask Dentsply Sirona for detailed information.

This product can be used with any version, however we recommend ones with dry milling.

It depends on clinical cases, however we recommend that this should be done after about 20 to 25 blocks have been milled.

It is the same as KATANA™ Zirconia STML disc, 3.5 to 5 mol%.

Approximately 60% is cubic structure and 40% is tetragonal.