A. Tarnish
B. Tarnish and corrosion
C. Wet corrosion
D. Dry corrosion
Related Mcqs:
- Which of the following statements about high copper silver alloy compared to conventional alloy is not true ?
A. It has increased tensile and compressive strength
B. It has poor tarnish and corrosion resistance
C. It’s edge strength is greater
D. Mercury content in the final restoration is less - Tooth discolouration due to high bilirubin secretion is seen in the____________?
A. Pink tooth of mummery
B. Ochronosis
C. Chlorodontia
D. Leong teeth - Silver tatoo is due to_____________?
A. deposition of Ag Amalgam in Mucosa
B. deposition of Ag Amalgam in Bone
C. deposition of Ag Amalgam in Dentin
D. deposition of Ag Amalgam in Enamel - Which of the following silver amalgam alloy have the maximum strength________________?
A. Lathe cut
B. Spherical
C. Admixed
D. Single composition - Which phase provides maximum strength in hardened mercury/silver alloy ?
A. Silver / Mercury phase
B. Silver / Tin phase
C. Tin / Mercury phase
D. Zinc / Mercury phase - Over-trituration of silver alloy and mercury_______________?
A. Reduces contraction
B. Increases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam
C. Decreases creep
D. Gives al dull and crumbly amalgam - Which of the following statement is true regarding lathe cut low Copper silver alloy ?
A. Requires least amount of mercury
B. Achieves high compressive strength at 1 hr.
C. Has tensile strength both at 15 minutes and 7 days is comparable to high copper, unicompositional alloys
D. Has lower cree value - The Sensitive period for tetracycline induced discolouration in the permanent maxillary mandibular incisors and canines is________________?
A. 3 months postpartum to 7th year of life
B. 4 months in utero to 3 months postpartum
C. 5 months in utero to 9 months postpartum
D. Birth to 7th year - Yellowish discolouration of oral mucous membrane, skin and sclera of eye is______________?
A. Pernicious anemia
B. Sickle cell anemia
C. Chloromycin therapy
D. Carotinemia - A flat, cricumscribed discolouration of skin or mucosa that may vary in size and shape is referred to as:____________?
A. Epulits
B. Macule
C. Nodule
D. papule
