cosmetic dentistry_ beauty & science

38 I I industry news _ Kuraray cosmeticdentistry 4_2013 _The KATANA Zirconia ML (Multi-Layered) Disc consists of four pre-coloured layers show- ing smooth enamel, dentine and cervical colour shifts. They represent natural tooth colours and allow dentists to achieve a natural-looking restoration. _KATANA Zirconia ML yields impressive results immediately The sintering process can be started imme- diately after milling without the usual working steps like dipping or painting and drying, signif- icantly reducing the steps in the production process. After polishing or glazing, impressive restorations can be achieved under standard conditions. _Reproducibility of colours for crowns, bridges and frames by integrated colour gradation The reliability of KATANA, Noritake’s high- performance zirconia material, has been proven scientifically.1 Reproducibility has been further developed and with KATANA Zirconia ML we have succeeded in making predictable and aesthetic results as easy to achieve as possible. _KATANA Zirconia ML Discs are the world’s first polychrome zirconia with integrated colour shift KATANA Zirconia ML Discs are high- performance zirconia blanks manufactured on an industrial scale and with consistently highquality.Theycanbeusedeasilyinevery- day milling process for laboratories with milling machines. A natural-looking resto- ration can be achieved immediately in one step, yielding a remarkable result with a natural gradient. The shortened manufac- turing process makes the discs economical and avoids possible complaints. The KATANA range is completed by the whiteKATANAZirconiaHT(HighTranslucent) Disc,whichoffersadditionalpossibilitiesfor individual staining and veneering. The CERABIEN ZR Stain can be used for the KATANA Zirconia range. Conventional glazing and polishing techniques can be used as well. Technical details: _Pre-sintered disc with collar _Flexural strength: 1,050–1,100 MPa _Fracture toughness: 5 MPa√m _Diameter: 98.5 mm_ 1 B.D. Flinn et al., Accelerated aging characteristics of three yttria-stabilized tetragonal zirconia polycrystal- line dental materials, Journal of Prosthetic Dentistry, 108/4(2012):223–30. Enamel Layer (35% of thickness) Transition Layer 1 (15%) Transition Layer 2 (15%) Body Layer (35%) Enamel LLLLaaaayyyyer (35% of thickness) TTrraannssiittiioonn LLLLaaaayer 1 (15%) TTrraannsition Laaaayyyyer 2 (15%) BBoody LLaayyerr ((((33335%) Enamel Layer (35% of thickness) Transition Layer 1 (15%) Transition Layer 2 (15%) Body Layer (35%) Kuraray Europe GmbH BU Medical Products Philipp-Reis-Str.4 65795 Hattersheim/Main,Germany Tel.:+49 69 305 35833 dental@kuraray.eu www.kuraray-dental.eu _contact cosmeticdentistry KATANAZirconia MLDisc High-performance zirconia with integrated colour shift