>YAMAKIN CO., LTD.

KZR-CAD HR 3 GAMMATHETA

Material Properties (Reference Value)

Three-Point Flexural Strength(MPa)		Vickers hardness* (HV0.2)	Radiopacity and Fluorescence	Fluoride Sustained Release
Without Water Immersion	After 7 Days of Immersion* in Water
300 ± 20	270 ± 20	90 ± 5

*JDMAS 245: 2017
Note: The figures given are for reference purposes and are not specifications.

Processing time

GAMMATHETA can be milled with both dry- and wet-typemilling machines.
Milling time for GAMMATHETA is approx. the same as for BLOCK 2.

Polishing Time

GAMMATHETA can be polished with an alumina polisher, but C&B DIAMOND POLISHER or C&B NANO DIAMOND POLISHER, which contain diamond particles, are recommended for smooth, quick polishing

Achieves Both High Strength and Sustained Fluoride Release

Filler technology

While the average particle diameter of inorganic fillers contained in BLOCK 2 is approx. 4 μm, the
particle diameter of inorganic filler for GAMMATHETA is approx. 1 μm. The mechanical strength of GAMMATHETA is enhanced by highly filled fine fillers. It also contains fluoride sustained release filler, the same as BLOCK 2.

Surface treatment

Long-Chain Spacer Silane Coupling Agent, with outstanding water resistance, is used for the surface treatment of the inorganic fillers for GAMMATHETA.
This helps fillers stay highly filled and enhances integration with the resin; as a result, its strength as a hybrid material is greatly improved.