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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Compared with dental alloys, CERAMICS show____________________?
A High ductility
B High hardness
C Low esthetic value
D Susceptibility to brittle fracture
Correct Answer: Susceptibility to brittle fracture
Chemical method of strengthening porcelain involves_________________?
A Exchange of aluminium and sodium ions
B Exchange of aluminium and potassium ions
C Exchange of sodium and potassium ions
D None of the above
Correct Answer: Exchange of sodium and potassium ions
The first porcelain tooth material was introduced by______________?
A DeChemant
B Ash
C Plateau
D McClean
Correct Answer: DeChemant
Which of the following bur is used in the preparation of cavity restored with porcelain fused to metal ?
A Carbide bur
B Diamond bur
C Stainless steel bur
D Diamond but for porcelain and carbide bur for metal
Correct Answer: Diamond but for porcelain and carbide bur for metal
Quartz is Dental porcelain is______________?
A Strengthener
B Binder
C Pigment
D Crack minimzer
Correct Answer: Strengthener
In method of firing: A shorter firing period at a higher temperature is considered better_______________?
A A large time period at a lower temperature is preferred
B A long firing period at a very high temperature is preferred
C A short firing period at a very low temperature is preferred
D none of these
Correct Answer: A long firing period at a very high temperature is preferred
Porcelain binds to metal in PFM crown by_________________?
A Metallic bind
B Transparency
C Chemical bond
D B and C
Correct Answer: B and C
Dicor restoration is_______________?
A Two coloured restorations
B Heat pressed ceramics
C Castabel ceramic
D None of the above
Correct Answer: Castabel ceramic
Opaque porcelain________________?
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
Correct Answer: Contains opacifier like zirconium and titanium oxide
Flux used in dental ceramic is________________?
A Alumina
B Silica
C Kaolin
D Boric oxide
Correct Answer: Boric oxide
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