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KATANA Zirconia HTML PLUS delivers improved optical properties and allows for minimally invasive preparations. (Image: Kuraray Noritake Dental)

KATANA Zirconia HTML PLUS: A refined formula for better outcomes

By Kuraray Noritake Dental
September 27, 2021

HATTERSHEIM AM MAIN, Germany: It is strong, pre-shaded like natural teeth, and reliable; it is KATANA Zirconia HTML, the strongest member of the KATANA multilayered zirconia series. Now, with the new KATANA Zirconia HTML PLUS, Kuraray Noritake Dental has carefully optimised this product to further improve its optical properties and to harmonise sintering schedules with the rest of the KATANA Zirconia family.

KATANA Zirconia HTML PLUS retains all of the popular properties of its predecessor, including the multilayered colour structure and uniform strength distribution throughout the blank. It is suitable for a variety of indications, including long-span bridges with a minimum wall thickness of just 0.4 mm in the anterior and 0.5 mm in the posterior region. This allows for minimally invasive preparations, and the user may choose between a monolithic, cut-back or framework design combined with his or her preferred finishing technique.

The “PLUS” refers to additional benefits, such as the material’s improved optical properties. KATANA Zirconia HTML PLUS offers an increased translucency of 45% (compared with 43% for KATANA Zirconia HTML) and an even more natural shade appearance of the manufactured restorations. At the same time, a high flexural strength (1,150 MPa) is maintained, providing for an unlimited range of indications.

“As the colour of the restorations appears deeper, more vivid and more saturated, and the translucency is closer to that of natural teeth, great optical integration is achieved straight away. This leads to a reduced finishing effort,” said Mathias Fernandez y Lombardi, EU scientific manager for dental ceramics and CAD/CAM materials at Kuraray Noritake Dental.

KATANA Zirconia HTML PLUS combines strength and aesthetics to cover a range of indications. (Image: Kuraray Noritake Dental)

In-house development creates impressive results

Like its predecessor and all other members of the KATANA Zirconia multilayered series, KATANA Zirconia HTML PLUS is the result of in-house development, powder compilation and blank production processes that allow for every detail to be controlled. A precise alignment of the desired properties has thus been achieved while maintaining a high blank quality that leads to the accurate milling results that users of KATANA Zirconia HTML are familiar with.

Sintering protocols have also been streamlined. For single-tooth restorations and bridges of up to three units, three different protocols are available: a 54-minute high-speed sintering program specifically developed for remake and rush cases, a 90-minute schedule and the traditional 7-hour sintering program. The last is suitable for long-span restorations.

These three options and identical schedules are available for KATANA Zirconia HTML PLUS, UTML and STML and the new KATANA Zirconia YML with additional flexural strength and technical translucency gradation. With this feature, it becomes extraordinarily easy to standardise procedures despite an indication-specific selection of the best-suited KATANA multilayered zirconia.

“KATANA Zirconia HTML PLUS is completely in line with our philosophy of developing products that support their users in streamlining and simplifying procedures without limiting choices,” said Lombardi.

“Users can choose from a whole range of highly specialised or universal zirconia solutions, can opt for their preferred design and finishing technique, and can select the sintering protocol that suits their individual needs. At the same time, the manual effort is reduced and the risk of starting the wrong sintering program is eliminated,” he concluded.

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