Lodestar

Lodestar is a classical, reduced-gold ceramic alloy with a high degree of strength for a wide range of indications. The silver-free composition enables reliable processing with conventional metal-ceramics.

Indications*

Inlays
Onlays, ¾ crowns, crowns
Telescope crowns, conus crowns
Bridges
Wide-span bridges
Cast posts / cores, bars, attachments
Implant-supported superstructures
Partial dentures

Technical Data

Composition (%):	Au 51.5 \| Pd 38.5 \| In 8.5 \| Ga 1.5 \| Re <1.0, Ru <1.0
ISO	22674:2016
ADA Class:	High Noble
Type / Color:	4 / White
Density (g/cm³)	13.7
Melting Range (Solidus/Liquidus):	1175 - 1300 °C
Elastic Modulus (GPa):	125
	Porcelain Fired
Vickers Hardness:	240
Tensile Strength (MPa):	705
0.2% Proof Stress (MPa):	495
Elongation (%):	20

Advantages

Ag-free
Good melting and flow characteristics
Increased strength
Wide range of indications
Compatible with conventional metal-ceramics (e.g. IPS Style)

Processing Data

Investment Material:	Phosphate-bonded
Preheating / Burn- out Temperature:	750 - 820 °C
Crucible	Ceramic crucible
Casting Temperature:	1360 - 1410 °C
Oxidation °C/min/Vacuum:	950 / 1 / No
CTE:	(25 – 500 °C): 14.1 x 10^-6 /K
Recommended Metal Ceramic:	IPS Style, IPS InLine One, IPS InLine, IPS Inline PoM, IPS Classic, IPS d.SIGN
Laser Welding Wire:	Laser Ceramic White

*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES