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Stratos Chatzichristos just tested the brand-new Esthetic Colorant on restorations made of KATANA™ Zirconia. This is his verdict:

“For me, KATANA™ Zirconia plus Esthetic Colorant is a true killer combination that leaves nothing to be desired. I love to apply the dyeing liquids to my monolithic zirconia restorations to intensify characteristic features and create natural shade effects. Usually, those restorations just need a final layer of glaze to look amazing!”

Would you like to know more about Esthetic Colorant for KATANA Zirconia? Watch this short video explaining the product and highlighting its features and benefits:

Case by Aleksandra Łyżwińska, Warsaw, Poland.

ABSTRACT

Indirect overlays are the contemporary restoration standard for posterior teeth with extensive hard tissue loss. They provide for cuspal coverage, which decreases the likeliness of coronal and/or root fracture. At the same time and in contrast to crowns, overlay preparations minimize the removal of sound tooth structure especially in the cervical region, which is a critical factor.¹ Modern dental resin composites allow for direct cuspal coverage in a single-visit appointment. The results of in-vitro studies suggest that these direct overlays are a suitable alternative to their indirect counterparts in specific situations.^2-6 The following case report is used to describe the direct restoration procedure by means of a maxillary right molar with an extensive, deep MOD lesion.

INTRODUCTION

In the context of treating a tooth with an extensive carious lesion, a biomechanical risk assessment should be performed. The primary method of reducing the likeliness of tooth fracture is treatment with a restoration that provides cuspal coverage. The contemporary gold standard for biomechanically compromised teeth are adhesively cemented overlays as an alternative to crowns.¹ Another option that does not involve labwork is a direct overlay restoration.^2-6 The direct approach is especially suitable for long-term temporization, which may be required during orthodontic treatment, for example.

For those who are still hesitant, we have listed several good reasons to come. Those already planning to come should have a look at why it is worth visiting the Kuraray Noritake Dental booth in Hall 11.3 | Stand E010!

Why visit the International Dental Show 2023 in Cologne?

• Get yourself informed about the latest developments in dentistry
• Meet and chat with like-minded people
• Make investment decisions based on information and a comparison of different products presented at IDS
• Benefit from special trade fair offers
• Enjoy the beautiful city of Cologne

Why visit the Kuraray Noritake Dental booth?

• Learn more about diverse high-quality products we offer
• Obtain first-hand information on these products’ use in live demonstrations and lectures
• Cease the opportunity to experience our latest products yourself
• Engage in fruitful conversations with renowned speakers
• Let our warm-hearted staff answer product- and procedure-specific questions that have been preying on your mind
• Share your own ideas (e.g. about new developments) and demands with our team

We look forward to seeing you in Cologne!

Why should you have Esthetic Colorant in your lab?

Esthetic Colorant for “KATANA™ Zirconia” is a set of easy-to-use shading liquids diffusing into the zirconia structure and enabling imitation of variety of internal shade structures.

It is an excellent choice for creating initial characteristics of the restoration before the sintering procedure, and by doing so laying groundwork for the final fast and easy individualization.

Check out the video to learn about the features of Esthetic Colorant and the resulting benefits.

Case by Dr. Yohei Sato, DMD, PhD, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, JAPAN and Dr. Keisuke Ihara, CDT, i- Dental Lab, JAPAN.

Fig. 1. The patient visited us with a chief complaint of a desire for improved esthetics of the maxillary right and left lateral incisors.

Fig. 2. A core fabricated from a diagnostic wax model was applied and the necessary clearances were determined.

Fig. 3. Since the teeth are microdonts, the preparation of each abutment was completed by simply exposing a fresh surface to be covered by the laminate veneers.

Fig. 4. A layer of porcelain was applied on the lithium disilicate glass substrate, to make a complete laminate veneer.

Fig. 5. After a trial fitting, the inner surface of the laminate veneer was cleaned with KATANA™ Cleaner. The inner surface was conditioned according to the prosthesis‘ IFU.

Fig. 6. Milling. CLEARFIL™ CERAMIC PRIMER PLUS was applied and dried to silane couple the restoration.

Fig. 7. After a trial fitting, KATANA™ Cleaner was applied to the abutment, and rubbed for more than 10 seconds. Then, it was washed off sufficiently (until the cleaner color had completely disappeared), and dried with compressed air.

Fig. 8. K-ETCHANT Syringe was applied and left for 10 seconds before water-washing and compressed air-drying.

Fig. 9. PANAVIA™ V5 Tooth Primer was applied and left for 20 seconds before compressed-air drying.

Fig. 10. PANAVIA™ Veneer LC Paste was applied to the inner surface of the laminate veneer.

Fig. 11. The laminate veneer was seated and the fit checked. Then, the excess cement was tack-cured (not more than 1 second at any one point) and removed. Finally, the restoration was light-cured and finished.

FINAL SITUATION

Fig. 12. This photo shows the laminate veneer restorations one month after placement. The morphology and color of the right and left lateral incisors have been improved, providing a good balance to the entire anterior dentition.

A discoloured abutment tooth, a metal post or tooth-coloured gum areas: It is not always possible to meet the target tooth or gum shade with a pre-shaded zirconia framework. Porcelain layering on a differently coloured base, however, is likely to deliver unexpected outcomes. The “CERABIEN™ ZR” Shade Base line-up has been developed and recently extended by Kuraray Noritake Dental Inc. for those who would like to avoid surprises and provide for a favourable framework colour, right from the start of porcelain layering. The five new opaque shades deliver approximately five times higher opacity than conventional “CERABIEN™ ZR” Shade Base porcelains, and can mask the base colour much more effectively for even more lifelike restorations.

The “CERABIEN™ ZR” Shade Base opaque shade line-up consists of three shades that reproduce tooth colour: Opaque White as a bleaching shade, Opaque Light as an A2 shade, and Opaque Dark as an A3.5 shade. They may be mixed or applied as delivered to the zirconia framework in thin layers to mask severely discoloured or metal areas. In most situations with a severely discoloured base, a precise matching of the target shade is achieved by applying an opaque shade as a first layer and a target-coloured “CERABIEN™ ZR” Shade Base as a second layer.

The other two new opaque shades – “CERABIEN™ ZR” Opaque Light Tissue and Opaque Dark Tissue – are used in a similar way to create a pink-opaque base in the gum areas of tooth-coloured zirconia frameworks (e.g. made of KATANA™ Zirconia Multi-Layered discs), which is perfect for reproducing gingival colour. Applied as a thin coating, the opaque tissue shades neutralise the tooth colour and their moderate reflection improves the colour effect of the subsequently applied tissue porcelains.

With their high masking ability, the new opaque shades make it even easier to adjust zirconia framework colours for highly aesthetic porcelain layering – no matter whether the base colour of a tissue or tooth area needs to be optimized.

100 years ago, the Association of the German Dental Industry (VDDI) organized its first dental show. Now, the show that became the world’s leading dental trade fair is just about to take place for the 40^th time – and Kuraray Noritake Dental Inc. is going to be part of it. At the company’s booth in Hall 11.3 (Stand E010), visitors are invited to discover new opportunities related to countless innovative products and their benefits – by chatting with the warm-hearted and knowledgeable team or by watching one of the lectures and hands-on demonstrations given by numerous internationally renowned experts.

Among the products worth a closer look are universal excellence solutions. These universally applicable, highly intuitive materials may be used to streamline clinical workflows by reducing the number of required components and work steps. Prominent examples are a universal composite with very few universal shades, a universal adhesive suitable for every etching technique and a universal resin cement working as a single-component solution even on silica-based ceramics.

Dental practitioners with a particular interest in prosthodontics should stop at the desk focusing on indirect restorative workflows. Here, they will find the PANAVIA™ family of resin cements and its three popular members, which are able to cover virtually every need. Moreover, CAD/CAM blocks for chairside processing and KATANA™ Cleaner, a cleaning solution providing for optimal bonding conditions on every surface will be presented here.

The bread and butter of many dental offices is placing direct restorations. However, the patient- and situation-specific demands may vary widely and may require very different types of materials – even within the class of composites. That is why Kuraray Noritake Dental offers various types of restoratives – all with excellent mechanical properties and innovative technologies such as Light Diffusion. They are part of the CLEARFIL MAJESTY™ series, showcased at the booth together with the well-known and researched CLEARFIL adhesives.

Minimally invasive restoration designs and excellent aesthetic despite a high degree of automation have found their way into dental technology. The materials required to realize these patient-centred concepts are found at a dedicated counter of the Kuraray Noritake booth. New in the portfolio: Esthetic Colorant that enables dental technicians to create characteristic shade effects on pre-sintered KATANA™ Zirconia!

A special highlight for dentists and dental technicians will be the lectures and hands-on demonstrations hosted by internationally renowned speakers. They will take place from Wednesday, March 15 to Saturday, March 18, 2023, at the Kuraray Noritake booth. The full programme and additional information about what to expect from Kuraray Noritake Dental in Cologne is available online at www.kuraraynoritake.eu. For those who are unable to attend in person, the presentations will also be broadcasted online.

A particularly chromatic cervical area, pronounced mamelons and translucencies in the incisal area: every natural tooth has its characteristic optical features stemming from its inner structure. Unfortunately, imitating these specific effects by merely adding stains or liquid ceramics to the surface of a monolithic restoration is quite hard to achieve. For this reason, Kuraray Noritake Dental Inc. introduces Esthetic Colorant for “KATANA™ Zirconia” – a set of easy-to-use shading liquids diffusing into the zirconia structure and enabling imitation of variety of internal shade structures. It is an excellent choice for creating initial characteristics of the restoration before the sintering procedure, and by doing so laying groundwork for the final fast and easy individualization.

Esthetic Colorant has been specifically developed for the “KATANA™ Zirconia” Multi-Layered Series to complement the effects obtained from the materials’ multi-layered colour structure. The system consists of twelve shading liquids, which have been optimised to maintain the original flexural strength of the “KATANA™ Zirconia” restoration. After milling, the liquids are applied to the clean surface of a monolithic or anatomically reduced restoration with a metal-free brush, preferably with our Liquid Brush Pen. The Esthetic Colorant then diffuses into the zirconia, and the desired inner shade effects are fixed and revealed after the final sintering procedure. Finishing can be accomplished through a variety of techniques including polishing, glazing and micro-layering.

The compact Esthetic Colorant line-up facilitates inventory management, while the typical effects of natural teeth can be reproduced in a predictable way. Using the new Liquid Brush Pen for Esthetic Colorant, the application procedure is streamlined, as the dental technician is given full control over the amount of shading liquid applied.

Testimonial article by Dr. Michael Teitelbaum, DMD, MAGD, FACD

A self-adhesive resin cement that contains MDP and LCSi monomers, allowing it to adhere to virtually every material without the need for a separate primer.

Ready to say goodbye to complicated bonding procedures, Dr. Michael Teitelbaum said hello to simplicity with Kuraray Noritake Dental Inc.‘s PANAVIA™ SA Cement Universal, a versatile cementation solution that simplifies his restorative workflow without sacrificing long-term bond strength. “PANAVIA™ is a name I’ve known and trusted since my prosthodontic program over 30 years ago,” shared Dr. Teitelbaum, who said PANAVIA™ SA Cement Universal allows him to confidently cement restorations because of its long-term reliability.

ALL-IN-ONE CEMENTATION SOLUTION

A self-adhesive resin cement that eliminates the need for a separate primer, PANAVIA™ SA Cement Universal contains a unique LCSi monomer that delivers a strong, durable chemical bond to porcelain, lithium disilicate, and composite resin, while a MDP monomer chemically reacts with zirconia, dentin, and enamel. “When I find myself cementing zirconia, my go-to cement is PANAVIA SA™ Cement Universal because it contains MDP, the magic ingredient that lets it actually bond to zirconia,” Dr. Teitelbaum explained. Thanks to a single-step bonding formula, PANAVIA™ SA Cement Universal is an easy-to-use, all-in-one cementation solution, and the material is available in both automix and handmix options. “One of the nice things about PANAVIA™ SA Cement Universal is if you’re in a hurry, maybe doing multiple units or working alone, you can use the automixing syringe tip and inject it into each crown,” said Dr. Teitelbaum. “Or if you’re naturally fast, like my assistant of over 20 years, you can hand mix the cement and load it directly into the crowns.”

“My go-to cement is PANAVIA™ SA Cement Universal because it contains MDP, the magic ingredient that lets it actually bond to zirconia.”

- Michael Teitelbaum, DMD, MAGD, FACD –

VERSATILE AND EASY TO USE

PANAVIA™ SA Cement Universal adheres to virtually all restorative materials without the need for a separate primer, silane, or etchant, simplifying the cementation workflow for clinicians and saving time for patients. “I have a patient who not only gags but makes more saliva than the Colorado River,” joked Dr. Teitelbaum. “It was nearly impossible [with other cements] to keep No. 31 dry long enough to sandblast, etch, prime, mix cement, load the crown and seat it. PANAVIA™ SA Cement Universal was the only cement I could get to work for him.” After the restoration is placed, any excess cement is easy to clean up after a quick 2 to 5 second light cure. “Once you’ve fully seated the crown, you can wave the curing light over the margins for a couple of seconds to just start the set. The excess material easily pops off while still in the rubbery phase,” said Dr. Teitelbaum. PANAVIA™ SA Cement Universal comes in 3 shades, universal (A2), translucent and white, which Dr. Teitelbaum says are suitable for most situations. “For translucent restorations, like inlays where the margins might be visible, I prefer a translucent or universal shade cement,” he said. “But where I may need to see the cement again someday, like an opaque crown or post, I prefer straight white.” Suitable for crowns, bridges, inlays/onlays, posts, and adhesion bridges, PANAVIA™ SA Cement Universal is a versatile cementation solution for virtually every material.

Dentist:

MICHAEL TEITELBAUM
DMD, MAGD, FACD

Case by Richard Young DDS, San Bernardino, CA

Easy procedure, reliable outcome: that is what most dental practitioners may wish for when placing indirect restorations. The following clinical case example is used to demonstrate an easy, but highly successful clinical protocol for the luting of a lithium disilicate crown.

Fig. 1. Lithium disilicate crown after etching of the intaglio surface with hydrofluoric acid and try-in.

Fig. 2a. Application of KATANA™ Cleaner into the crown for a complete removal of contaminants such as proteins from blood and saliva, which may compromise the performance of any resin cement system.

OR Fig. 2b. Alternatively, KATANA™ Cleaner is applied into a mixing well.

Fig. 3. Application of KATANA™ Cleaner to the restoration.

Fig. 4. KATANA™ Cleaner is applied to the prepared tooth structure in the same way (rubbing for ten seconds followed by rinsing and drying).

Fig. 5. Application of PANAVIA™ SA Cement Universal into the cleaned crown.

Fig. 6. The cement contains a unique silane coupling agent – the LCSi monomer - for a strong and reliable bond to lithium disilicate and other restorative materials like glass ceramics and hybrid ceramics.

   The Silane is activated in the mixing tip by Original MDP.

Fig. 7. Easy clean-up after two to five seconds of tack-curing.

Fig. 8. The excess resin cement is in its gel-state and removed in one piece with an explorer.

FINAL SITUATION

Fig. 9. Treatment outcome immediately after crown placement.

Dentist:

RICHARD YOUNG DDS

Case and images courtesy of Richard Young DDS, San Bernardino, CA