TECH/CERAM RESTORATIONS (PFM)

At Technics, microscopes are used to 10x magnification to trim your dies, then wax and finish the understructures. This ensures a precision fit of 40 microns on average. We use an internally layered porcelain technique on all crowns using at least four separate ceramic powders and all contacts are verified for accuracy using a solid model.

Noble Alloy (Argelite 60P)

The Palladium-Silver (PD AG) System was the first “gold-free” system to be introduced in the United States (1974) that still contained a noble metal (Palladium). It was offered as an economical alternative to the more expensive gold-platinum – palladium and gold- palladium and silver (i.e., gold based) metals.

Advantages	Disadvantages
Low Cost Low Density Good Castability Burnishabilty Low Hardness Excellent Sag Resistance Moderate Nobility Level Good Tarnish and Corrosion Resistance Suitable For Long-Span Fixed Bridges	Discoloration (yellow, brown, or green) may occur with some dental porcelains Pd and Ag prone to absorb gases Require regular purging of the porcelain furnace May form internal oxides (yet porcelain bonding does not appear to be a problem) High coefficient of thermal expansion

ADA Insurance Codes: 02752 Porcelain Fused to Noble Metal

High Noble White (Argedent 52) and High Noble Yellow Gold (Argedent Y86) Alloys

The High Noble white and yellow alloys were developed to overcome the major limitations in the gold-platinum-palladium system: poor sag resistance, low hardness, and high cost. However, the High Noble Yellow is one of the oldest metal ceramic alloys systems and can be prescribed for a very aesthetic restoration on single units and small bridges

High Noble White (52.5% Gold)

Advantages	Disadvantages
Less expensive than the Au-Pt-PD alloys Improved sag resistance High noble metal content Tarnish and corrosion resistant Low coefficient of thermal expansion	Silver creates potential for porcelain discoloration (but less than high-silver group) High Cost

High Noble Yellow (86.0% Gold)

Advantages	Disadvantages
Excellent castability Excellent bonding Easy to adjust and finish High nobility level Excellent corrosion and tarnish resistance Biocompatible Burnishable Improved color	High Cost Poor sag resistance so not suited for long-span fixed bridges Low hardness (greater wear) High density (fewer castings per ounce)

ADA Insurance Codes: 02750 Porcelain Fused to High Noble Metal

Base Alloy (Talladium Tilite Star)

Advantages	Disadvantages
Low Cost Extremely tough	Cannot be burnished Cannot be soldered Possibly lower biocompatibility

ADA Insurance Codes: 02751 Porcelain Fused to Predominately Base Metal

Every case will be delivered to you with an Identalloy® Certificate for your patient’s record.