Saturday, October 15, 2011

CHAPTER 8 DIRECT GOLD/GOLD FOILS


Indications for direct gold restorations
Conservative class 1,2,3,5,6 areas
Also incipient lesions, cervical erosions and small carious defects
Good gingival tissue health
Low caries index.
Able to obtain good isolation
Area is not an esthetic concern to the patient

Direct gold filling materials
Gold Foil:  sheets, ropes, pellets, platinized
Electrolytic gold:  mat, electraloy RV
Powdered gold:  precipitated gold in wax matrix

OPER DENT 19: 16-19, 1994. A new direct gold material that is considerably different from other direct golds
has been available since 1989. The advantages of this material are that the final restoration exhibits greater
density than other forms of granular gold and has a 50% increase in shear strength when compared to gold
foil.  This new direct filling gold, STOPFGOLD, has had encouraging clinical results.

DIRECT GOLD ANNEALING (DEGASSING) PROCESS
A heating process in which surface contaminants (oxygen, sulfur, moisture, wax) heated to 800-11000 F
are removed to enhance cohesiveness 
Methanol or ethanol should be used in the alcohol lamp

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