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NANOZR milling blank / Pre-sintered Zirconia Disk for Dental CAD/CAM System

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NANOZR milling blank

NANOZR is a pre-sintered disk for dental CAD/CAM system developed by exploiting nanotechnology and has been backed by clinical research over 10 years.
NANOZR is a promising ceramics suitable for dental restorations required high structural strength because of its higher durability.

Ball drop impact test

Steel balls of 6, 14, 25 and 32 g were dropped from the 600 mm height onto the three kinds of 1 mm thick disks made of alumina, yttria-stabilized zirconia (Y-TZP) and NANOZR.
Alumina was easily broken at 6 g, whereas Y-TZP broke at 25 g. In contrast, NANOZR endured a weight of 32 g.


  • High fracture toughness in comparison with conventional zirconia
  • High bending strength
  • Resistance to Low Temperature Aging Degradation (LTAD)
  • High Weibull modulus (Indicates very homogeneous matrial)
  • Biocompatibility


Unique material properties offers safety

NANOZR is an intragranular type nanocomposite consisting zirconia matrix and alumina dispersions, which is reinforced with nano crystals. The physical properties of NANOZR are unique. NANOZR has a flexible property than that of conventional dental ceramics.
In addition, extremely high fracture toughness offers the best safety and reliability.
Furthermore, NANOZR has high resistant under hydrothermal conditions. Thus, NANOZR is applicable for various kinds of dental restorations.

Characteristics of NANOZR


NANOZR is a composite of Ceria stabilized Zirconia and Alumina. An intragranular nanostructure is obtained during sintering.

Physical properties

NANOZR is a unique material that combines much higher toughness and higher strength as compared to those of conventional zirconia. Crack length induced by Vickers indentation of NANOZR is quite shorter than that of other conventional ceramics.

Microstructure of NANOZR

Microstructure of NANOZR

Characteristics of NANOZR


NANOZR has a very high resistance to low temperature aging degradation (LTAD) under hydrothermal conditions.

Chemical solubility

NANOZR indicates no solubility in the oral environment.


NANOZR does not produce metallic allergy and has biological safety.

Optical micrograph around vickers indentation

Optical micrograph around vickers indentation ( Load : 490N )

Approach to structural strength analysis

As NANOZR possesses exclusive unique physical properties, it can apply various regions, such as thinner parts and/or complex shape which are required much higher strength. Panasonic proposes optimum shape design for newly intended application by taking advantage of our analysis and design technologies.

Approach to structural strength analysis

Case study of Stress Analysis

Case introduction by the customer

Case introduction by the customer
Case introduction by the customer

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NANOZR milling blank

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Trade name NANOZR milling blank
Diameter (mm) 98.3
Thickness (mm) 10, 12, 14, 16, 18, 20, 22, 25
Indications ex.) crown, bridge, etc.

Technical Data

Properties Measured Values Unit Standard Used
Density 5.52 g / cm³ JS R 1634
Bending strength 1290 MPa ISO 6872 (Biaxial)
Fracture toughness 8.62 MPam½ ISO 6872 (SEVNB)
CTE (25 ° C- 500 ° C) 10.0 10-6K-1 ISO 6872
Hardness 11.5 GPa JS R 1610 (Vickers)
Elastic modulus 245 GPa JS R 1602
Thermal conductivity 6.22 W / (mK) Laser Flash
Radioactivity 0.067 Bq / g ISO 6872
Chemical Solubility 0.00 μg / cm² ISO 6872

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Quality Management

Quality Management

Panasonic is producing CAD/CAM blanks in house under consistent quality management ranging from raw materials to powder molding and pre-sintering, procedure and provides CAD/CAM blanks that customer can use in relief.

Dental prosthesis realizing high-precision fitting can be obtained because our CAD/CAM blanks are produced by using cold isocratic press (CIP), which makes possible to get isotropic shrinkage during full sintering procedure.

Panasonic Healthcare Co., Ltd. is certified in accordance with EN ISO 13485: 2003 / AC: 2009 and the Directive 93/42/EEC on Medical Devices (MDD).

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  • Im Nordfeld 13, 29336 Nienhagen
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Digident GmbH

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DMC Cologne GmbH & Co. KG

  • Ruth-Hallensleben-Straße 4, 50739 Köln
  • Tel: +49 (0)221/17049956
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Form for Function GmbH

  • Wilhelminenstrasse 25, 64283 Darmstadt
  • Tel: +49 (0)6151/273271
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Die Modellmacher oHG

  • Weberstr. 11, 31157 Sarstedt
  • Tel: +49 (0)5066/9031177
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Petersen Dental GmbH & Co. KG

  • Denschiweg 17, 79618 Rheinfelden
  • Tel: +49 (0)7623 / 8611
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R+K CAD/CAM Technologie GmbH & Co. KG

  • Ruwersteig 43, 12681 Berlin
  • Tel: +49 (0)30/549934-246
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vFM Dentallabor GmbH

  • Borsteler Chaussee 111, 22453 Hamburg
  • Tel: +49 (0)40/57206613
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Wittenberg Dental Dr. Eikel

  • Krebberg 2, 06888 Wittenberg-Pratau
  • Tel: +49 (0)3491/4594190
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Zahntechnik Manfred Schmidt e.K.

  • Grabenallee 22-24
  • 77652 Offenburg
  • Tel: +49 (0)781-24061
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