Dental Materials MCQs

Page No. 3

Which phase provides maximum strength in hardened mercury/silver alloy ?


aSilver / Mercury phase


bSilver / Tin phase


cTin / Mercury phase


dZinc / Mercury phase


View Answer Silver / Tin phase

The tarnished layer of silver amalgam consists of________________?


aSulphides of silver


bOxides of tin


cChlorides of tin


dAll of the above


View Answer Sulphides of silver

The threshold limit value of mercury exposures is_______________?


a0.02 mg / m3


b0.05 mg / m3


c0.01 mg / m3


d0.5 mg / m3


View Answer 0.05 mg / m3

Mercury intoxication in dental office mainly results from____________?


aDirect contact with the mercury


bInhalation of mercury vapours


cIngestion of mercury


dNone of the above



Over-trituration of silver alloy and mercury_______________?


aReduces contraction


bIncreases the strength of lathe cut alloy but reduces the strength of spherical alloy amalgam


cDecreases creep


dGives al dull and crumbly amalgam



Mercury rich condition in a slow setting amalgam alloy system in a resoration in______________?


aAccelerated corrosion


bFracture of the restoration


cMerginal damage


dAll of the above


View Answer All of the above

Advantage of minimum mercury technique or Eames technique is all Except________________?


aHigh strength


bSets quickly


cNeeds no squeezing of excess mercury


dGreater plasticity and adapts well to cavity walls



The solid solution of silver and mercury is called_______________?


ay1


by2


cB1


dy


View Answer y1

Once triturated, the Dental amalgam should be condensed with in_____________?


a6 minutes


b5 minutes


c3 minutes


d15 minutes


View Answer 3 minutes

High strength amalgam is achieved by_____________?


aMaximum matrix and minimum alloy phase


bMinimum matrix and maximum alloy phase


cMaximum matrix phase


dMinimum alloy phase



Goto Page No.

Page 3 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