Tublulence of molten gold is due to _____________?
Tublulence of molten gold is due to _____________? A. Impurities in gold B. Improper venting C. A and BD. None of the above
Tublulence of molten gold is due to _____________? A. Impurities in gold B. Improper venting C. A and BD. None of the above
In a patient with allergy to costume jewelry, which of the following is contraindicated______________? A. High gold B. Low gold C. Palladium – AgD. Ni – Cr
Indium in metal alloys_______________? A. Improve bonding B. Harden the metal ceramic Ag-Pd alloyC. Both A and B D. None of the above
Mouth temperature waxes are_______________? A. Iowa wax B. Modeling wax C. Green stick wax D. None of the above
Incomplete casting is the result of_____________? A. More porous investment in the mouldB. Narrow sprue diameter C. Hollow sprue D. Large reservoir
Glossy smooth margins of a casting are due to_____________? A. Shrinkage of alloy on cooling B. Investment breakdownC. Incomplete wax elimination D. Incomplete gas elimination
Gypsum bonded investment should not be heated over______________? A. 700°C B. 1,300°C C. 1,063°C D. 900°C
Cobalt-Chrominum alloys contains_______________? A. 30% cobalt and 60% chrominumB. 60% cobalt and 30% chrominum C. 1% palladium D. 20% gold
The most commonly used Titanium alloy for dental and medical purposes is________________? A. Ti 6Al 4V B. Ti 5Al 4V C. Ti 5Al 5V D. Ti 6Al 6V
Wax pattern is ideally invested immediately to decrease the dimensional changes caused by_______________? A. Decrease flow B. Continuous expansionC. Relaxation of the internal stresses D. Water loss