A. Is Feldspathic glass
B. Contains opacifier like zirconium and titanium oxide
C. Not used to mask the colour of the cement used in placing of restoration
D. Used to produce the characteristic translucence, which is an inherent aspect of the incisal edge in natural teeth
Related Mcqs:
- Which is not present in porcelain________________?
A. Silica
B. Feldspar
C. Calcium carbonate
D. Amorphous material - What is the term for the radio opaque area found at the root apex of young permanent teeth involved with chronic pulpitis ?
A. Apical cyst
B. Apical condensing osteitis
C. Chronic apical periodontitis
D. Stage one apical osteofibroses - The oral mucosa becomes rigid, blanched and opaque in which of the following conditions?
A. Pemphigus vulgaris
B. Lupus erythematoses
C. Ehlers-Danlos syndrome
D. Submucous fibrosis - A 20yr old patient reports with multiple swelling of the jaws. Clinical examination reveals multiple hard swellings involving the jaws and intra orally several missing teeth are noticed. Panoramic radiograph reveals multiple radio opaque lesions in the maxilla and the mandible with multiple impacted teeth and supernumerary teeth indicative of Gardeners syndrome: The above mentioned condition is______________?
A. Autosomal dominant disease
B. Autosomal recessive disorder
C. X-linked disease
D. A syndrome of unknown cause - Porcelain denture teeth________________?
A. Have a higher coefficient of thermal expansion than acrylic teeth:
B. Have a lower abrasion resistance than enamel
C. Should be used where the inter dental clearance is small
D. Have a higher abrasion resistance than gold - The first porcelain tooth material was introduced by______________?
A. DeChemant
B. Ash
C. Plateau
D. McClean - Which of the following releases single wavelength of energy ?
A. QTH
B. PAC
C. LED
D. Argon lasers - The ideal temperature of water bath for softening fluid wax is about________________?
A. 51 to 54 degree F
B. 51 to 54 degree C
C. 70 to 75 degree F
D. 70 to 75 degree C - Coefficient of thermal expansion of metal-ceramic alloys is________________?
A. Same as porcelain
B. More than porcelain
C. Less than porcelain
D. More than or equal to porcelain but not less - Porcelain is best fired__________________?
A. In open air
B. Under air compression
C. When several layer are fired simultaneously
D. Under minimum pressure
