Frequently Asked Questions
Q. What is GOLDTECH BIO 2000¨?
A. GOLDTECH BIO2000 is a unique castable, gold porcelain alloy consisting of 99.7 percent gold with indium and zinc additions: a superior alternative for esthetic restorations.
Q. Why should I use GOLDTECH BIO 2000¨ ?
A. GOLDTECH BIO 2000¨ allows you to fabricate aesthetic porcelain fused-to-metal restorations using normal laboratory techniques. You do not have to learn new techniques or purchase expensive equipment.
Q. How does GOLDTECH BIO 2000¨ develop warm porcelain shades?
A. Because GOLDTECH BIO 2000¨ is 99.7% gold it retains the true rich color of pure gold, which is the best background for developing warm porcelain shades. Alloy additions such as platinum, palladium or silver would whiten the yellow color rapidly. The rich yellow color of GOLDTECH BIO 2000¨ absorbs all of the shorter light wavelengths including the blue portion of the spectrum. The blue light is responsible for the dark line seen on traditional porcelain to metal restorations. The reflected light from GOLDTECH BIO 2000¨ does not contain any blue light so a dark shadow at the gingival is not seen.
Q. How can a 99.7 % gold alloy bond to porcelain?
A. The indium and zinc trace elements produce an almost transparent oxide on the surface of the alloy. This oxide readily bonds to porcelain. The choice and amounts of indium and zinc is no accident. This combination is patented. Consequently no surface binders are necessary.
Q. How can GOLDTECH BIO 2000¨ be compatible with all porcelains?
A. GOLDTECH BIO 2000¨ changes some rules regarding how we evaluate porcelain to metal compatibility. Because the alloy is almost pure gold it can transmit heat very fast. Stress develops in porcelain when it begins to set during the firing cooling cycle at about 600°C. At this stage, GOLDTECH BIO 2000¨ will lose heat over a thousand times faster than the porcelain. The actual temperature of the alloy will be always much lower than the porcelain temperature. For GOLDTECH BIO 2000¨ , comparing the thermal expansion numbers at equal temperatures is not valid. As long as the alloy is able to release heat fast, it will meet the criteria for compatibility with any porcelain. The rapid heat transfer is the reason for using hollow pontics when fabricating bridgework: the design can release heat fast. Solid pontics cannot release heat fast enough and may crack the porcelain.
Q. How strong is GOLDTECH BIO 2000¨ ?
A. The secret of GOLDTECH BIO 2000¨ Õs strength is in the design of the restoration and the use of full porcelain coverage. As an aesthetic alloy GOLDTECH BIO 2000¨ is designed for use from bicuspid to bicuspid in segments of one or three units.
Q. Is GOLDTECH BIO 2000¨ a cost effective alloy?
A. Since GOLDTECH BIO 2000¨ is designed for full porcelain coverage, relatively little alloy is used in each restoration. Overall cost per unit is very reasonable.
