Dental Materials MCQs

Page No. 56

Inorganic phase of the composites aid in_______________?


aIncreasing the mechanical strength

✖


bDecreasing the coefficient of thermal expansion

✖


cReducing the polymerization shrinkage

✖


dAll of the above

✓


View Answer All of the above

Inadequate pressure application during flasking_______________?


aIncreases vertical dimension

✓


bCauses teeth to be shrunken in investment

✖


cCauses poor quality of colour

✖


dCauses fracture of denture

✖



The % of free monomer in a heat – cured acrylic resin is_______________?


a8% to 10%

✖


b3% to 5%

✖


c0.2% to 0.5%

✓


d0.6% to 0.8%

✖


View Answer 0.2% to 0.5%

What is the disadvantage of using composites as restorative material ?


aIncreased thermal conductivity

✖


bDecreased wear resistance

✓


cDecreased thermal conductivity

✖


dNone of the above

✖



Acrylic resins were first introduced as a denture base material in______________?


a1925

✖


b1937

✓


c1951

✖


d1956

✖


View Answer 1937

Marginal leakage related to temperature change occurs to the greatest extent with_______________?


aAmalgam alloy

✖


bUnfilled resin

✓


cComposite resin

✖


dDirect filling gold

✖


View Answer Unfilled resin

In self-cure acrylic resin, activator is_____________?


aToluidine

✖


bQuaternary ammonium compound

✖


cBenzoyl peroxide

✖


dTertiary amine

✓


View Answer Tertiary amine

For photo-curing the composite resin the light source______________?


aShould be held at a millimeter distance from the restoration

✓


bNeed no protection while in use

✖


cWill cure composite upto a depth of 5 millimeter thickness

✖


dIs fibre optic

✖



Which of the following procedure is indicated to produce cross-linking in the polymerization of linear chains of acrylic_______________?


aAddition of grain refining agents

✖


bAddition of difunctional monomers

✓


cIncreasing the amount of heat required for linear polymerization

✖


dIncorporation of terminating agents

✖



The chemical used to etch enamel is_______________?


aZinc oxide

✖


bMethyl methacrylate

✖


cPhosphoric acid

✓


dEugenol

✖


View Answer Phosphoric acid

Goto Page No.

Page 56 of 62

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan