1000 MCQS Dental ADC Waysem (Latest 2024 – 2025)
With Complete Solution
1.sForslowerspremolars,sthespurposesofsincliningstheshandpieceslinguallysissto,
A.sAvoidsbuccalspulpshorn
B.sAvoidslingualspulpshorn
C.sRemovesunsupportedsenamels
D.sConserveslingualsdentines-sA.sAvoidsbuccalspulpshorn
Explanation
1-savoidsBUCCALspulpshorn
2-sconservesling.sdentine
SostakesAsandsBsifsavailable
2.sForsansamalgamsrestorationsofsasweakenedscuspsyousshould,s
A.sreducescuspsbys2mmsonsasflatsbasesforsmoresresistance
B.sreducescuspsbys2mmsfollowingsthesoutlinesofsthescusp
C.sreduces2mmsforsretentionsforms-sB.sreducescuspsbys2mmsfollowingsthesoutlinesofsthescusp
Explanation
Fscusps=s0.5-1.5smmsacc.stosocclusion.
Crackedscusps=sFLATsBASE
3.sBeforesfillingsasclasssVsabrasionscavityswithsGICsyousshould,
A.sCleanswithspumice,srubberscup,swatersandsweaksacid
B.sDrysthescavitysthoroughlysbeforesdoingsanything
C.sAcidsitchscavitysthensdrysthoroughlys-
sA.sCleanswithspumice,srubberscup,swatersandsweaksacid
Explanation
alsosscrapingswithsactualscavitysprep.
4.sWhichsofsthesfollowingsstatementsaboutsthesdefectivesmarginssofsamalgamsrestorationssiss
true?
A.sTheslargersthesbreakdown,sthesgreaterstheschancesofsdecay.s-
sA.sTheslargersthesbreakdown,sthesgreaterstheschancesofsdecay.
Explanation
,theslargersthesgapsbetweensthesrestorationsandsthestooth,sthesmorestheschancesforsrec.sdecay
s-->sreplacesdon'tsrepair.
5.sThesretentionspinsinsansamalgamsrestorationsshouldsbesplaced,
A.sParallelstosthesouterswall
B.sParallelstostheslongsaxissofstooths-sA.sParallelstosthesouterswall
Explanation
RULEsOFs"2"s???
6.sThesmostscommonscausesofsfailuresofsthesIDNs"InferiorsDentalsNerve"sblocksis,s
A.sInjectingstooslow
B.sInjectingstooshighs-sA.sInjectingstooslow
Explanation
Failuresofsinferiorsalveolarsnervesblock:s
1-sAnatomical:s
-accessorysnervessupplys(MHsnerve,scervicalscutaneoussnervesC1,sC2)
-variable,svariationsinscoursesofsnervesORsforamensposition,s
-bifidsalveolarsnervesorsmandibularscanal
2-sPathological:sinfection,sinflammation,spreviousssurgery;strismus
3-sPharmacological:schronicsalcoholsabuse,schronicsnarcoticsdrugsabuse;s
4-sPsychological:sfear,sanxiety,sapprehension;s
5-
sPoorstechnique:sthississthesmostscommonsreasonsforsfailure.sTheresaresthreesmostscommonl
ysoccurringsproblemsswithsthisstechnique:
-Inadequatesmouthsopening.s
-Impropersneedlesplacement:
a)stooslow.
b)stoosfarsforwards(laterally)sorsbackwards(medially)sofsthestargetsareas(needstosinsertsthesn
eedlesjustsmedialstosthespterygomandibularsraphesàsdepthsofs20stos25smm)s
-Haste:sWaitingsthreestosfivesminutessaftersthesinjectionsbeforesstartingsthesprocedure.
7.sWhichsonesofsthesfollowingsissusedsinswatersfluoridation:s
A.sSnF
B.s1.23%sAPFs
C.sH2SiF
D.sCaSiFs-sC.sH2SiF
Explanation
,Watersfluoridation:
1-sHydrofluosilicicsacids=sH2SiF6s(notsH2SiF2)
2-sSodiumssilicofluorides=sNa2SiF6
3-sSodiumsfluorides=sNaF
8.sThesbestswaystoscleansascavitysbeforesthesplacementsofsGICsis,s
A.sH2O2
sB.sPhosphoricsAcids
C.sPolyacrylicsacids-sC.sPolyacrylicsacid
Explanation
alsoscalled:
-Polycarboxylicsacid
-Polyalkenoicsacid
9.sThesmostsmineralisedspartsofsdentinesis,s
A.sPeritubularsdentines-sA.sPeritubularsdentine
Explanation
NOTsintertubulars&sNOTsinterglobularsdentine.
10.sAs45syears-
oldspatientsawokeswithsswollensface,spuffinesssaroundstheseyes,sandsoedemasofsthesupperslip
swithsrednesssandsdryness.sWhensheswentstosbedsheshadsnosswelling,spainsorsdentalscomplai
nts.sExaminationsshowssseveralsdeepssilicatesrestorationssinsthesanteriorsteethsbutsexaminat
ionsissnegativesforscaries,sthermalstests,spercussion,spalpation,spain,sandsperiapicalsareasofsr
amififaction.sThespatient'sstemperaturesissnormal.sThesdaysbeforesheshadsasseriessofsgastroi
ntestinalsx-rayssatstheslocalshospitalsandswassgivensascleansbillsofshealth.
Thesconditionsis:s
A.sAcutesperiapicalsabscess
B.sAngioneuroticsoedema
C.sInfectioussmononucleosis
D.sAcutesmaxillaryssinusitis
E.sAcutesapicalsperiodontitiss-sB.sAngioneuroticsoedema
Angioedmas(TypesIsAllergy)sreactionstoscontrastsmedia.
11.sInternalsresorptionsis,
A.sRadiolucencysoversunalteredscanal
B.sUsuallysinsasresponsestostrauma
, C.sRadiopacitysoversunalteredscanals-sB.sUsuallysinsasresponsestostrauma
12.sOnsreplantationsofsansavulsedstoothsyouscoulds
A.sSurfacesresorption,sexternalsresorption
B.sInternalsresorption
C.sInflammatorysresorption
D.sReplacementsresorption
E.sA,sCsandsD
F.sAllsofsthesaboves-sE.sA,sCsandsD
Explanation
(B)sInternalsresorptionsdoesn'tsfollowsavulsion/replantation.
16.sWhatsissthessequencesfromssuperficialstosthesdeepestsinsdentinescaries?
A.sZonesofsbacterialspenetration,sdemineralisation,ssclerosis,sreparativesdentines
B.sZonesofsbacterialspenetration,sreparativesdentine,sdemineralisation,ssclerosis.s
C.sZonesofsbacterialspenetration,ssclerosis,sreparativesdentine,sdemineralisation.s-
sA.sZonesofsbacterialspenetration,sdemineralisation,ssclerosis,sreparativesdentines
Explanation
ZonessofsDentinesCariess(fromssuperficialstosdeep):
Decomposedsdentines(V)
Bacterialspenetrations(IV)
Demineralisations(III)
Dentinalssclerosiss(II)
Fattysdegenerations(I)
-->sReparativesdentines(inspulp)
17.sThesnervessupplysofsthespulpsisscomposedsofswhichstypesofsnervesfibres?
A.sAfferents&ssympathetics-sA.sAfferents&ssympathetics
Explanation
1-
Autonomicsnervesfiberss(sympatheticsonly):sTheysinnervatesthessmoothsmusclescellssofsthesa
rteriolessandsthereforesfunctionsinsregulationsofsbloodsflowsinsthescapillarysnetwork.
2-Afferents(sensory)sfibers:sThesesarisesfromstrigeminalsn.s
Dentinssensitivitysissexplainedsbysthes'hydrodynamicstheory's=sMovementsofsfluidsinsDTsàsac
tivationsofssmall,smyelinatedsAδsfibersscausingssharpspain.s
InjurysandsinflammationslatersleadstosthesactivationsofsunmyelinatedsCsfiberss(dullsachessens
ation),swhichsaresfoundsinsthesSub-odontoblasticslayersandsthesdeepspulp.
13.sThespercentagesofstotalsdentinessurfaces/sdentinalstubuless0.5mmsawaysfromspulps
With Complete Solution
1.sForslowerspremolars,sthespurposesofsincliningstheshandpieceslinguallysissto,
A.sAvoidsbuccalspulpshorn
B.sAvoidslingualspulpshorn
C.sRemovesunsupportedsenamels
D.sConserveslingualsdentines-sA.sAvoidsbuccalspulpshorn
Explanation
1-savoidsBUCCALspulpshorn
2-sconservesling.sdentine
SostakesAsandsBsifsavailable
2.sForsansamalgamsrestorationsofsasweakenedscuspsyousshould,s
A.sreducescuspsbys2mmsonsasflatsbasesforsmoresresistance
B.sreducescuspsbys2mmsfollowingsthesoutlinesofsthescusp
C.sreduces2mmsforsretentionsforms-sB.sreducescuspsbys2mmsfollowingsthesoutlinesofsthescusp
Explanation
Fscusps=s0.5-1.5smmsacc.stosocclusion.
Crackedscusps=sFLATsBASE
3.sBeforesfillingsasclasssVsabrasionscavityswithsGICsyousshould,
A.sCleanswithspumice,srubberscup,swatersandsweaksacid
B.sDrysthescavitysthoroughlysbeforesdoingsanything
C.sAcidsitchscavitysthensdrysthoroughlys-
sA.sCleanswithspumice,srubberscup,swatersandsweaksacid
Explanation
alsosscrapingswithsactualscavitysprep.
4.sWhichsofsthesfollowingsstatementsaboutsthesdefectivesmarginssofsamalgamsrestorationssiss
true?
A.sTheslargersthesbreakdown,sthesgreaterstheschancesofsdecay.s-
sA.sTheslargersthesbreakdown,sthesgreaterstheschancesofsdecay.
Explanation
,theslargersthesgapsbetweensthesrestorationsandsthestooth,sthesmorestheschancesforsrec.sdecay
s-->sreplacesdon'tsrepair.
5.sThesretentionspinsinsansamalgamsrestorationsshouldsbesplaced,
A.sParallelstosthesouterswall
B.sParallelstostheslongsaxissofstooths-sA.sParallelstosthesouterswall
Explanation
RULEsOFs"2"s???
6.sThesmostscommonscausesofsfailuresofsthesIDNs"InferiorsDentalsNerve"sblocksis,s
A.sInjectingstooslow
B.sInjectingstooshighs-sA.sInjectingstooslow
Explanation
Failuresofsinferiorsalveolarsnervesblock:s
1-sAnatomical:s
-accessorysnervessupplys(MHsnerve,scervicalscutaneoussnervesC1,sC2)
-variable,svariationsinscoursesofsnervesORsforamensposition,s
-bifidsalveolarsnervesorsmandibularscanal
2-sPathological:sinfection,sinflammation,spreviousssurgery;strismus
3-sPharmacological:schronicsalcoholsabuse,schronicsnarcoticsdrugsabuse;s
4-sPsychological:sfear,sanxiety,sapprehension;s
5-
sPoorstechnique:sthississthesmostscommonsreasonsforsfailure.sTheresaresthreesmostscommonl
ysoccurringsproblemsswithsthisstechnique:
-Inadequatesmouthsopening.s
-Impropersneedlesplacement:
a)stooslow.
b)stoosfarsforwards(laterally)sorsbackwards(medially)sofsthestargetsareas(needstosinsertsthesn
eedlesjustsmedialstosthespterygomandibularsraphesàsdepthsofs20stos25smm)s
-Haste:sWaitingsthreestosfivesminutessaftersthesinjectionsbeforesstartingsthesprocedure.
7.sWhichsonesofsthesfollowingsissusedsinswatersfluoridation:s
A.sSnF
B.s1.23%sAPFs
C.sH2SiF
D.sCaSiFs-sC.sH2SiF
Explanation
,Watersfluoridation:
1-sHydrofluosilicicsacids=sH2SiF6s(notsH2SiF2)
2-sSodiumssilicofluorides=sNa2SiF6
3-sSodiumsfluorides=sNaF
8.sThesbestswaystoscleansascavitysbeforesthesplacementsofsGICsis,s
A.sH2O2
sB.sPhosphoricsAcids
C.sPolyacrylicsacids-sC.sPolyacrylicsacid
Explanation
alsoscalled:
-Polycarboxylicsacid
-Polyalkenoicsacid
9.sThesmostsmineralisedspartsofsdentinesis,s
A.sPeritubularsdentines-sA.sPeritubularsdentine
Explanation
NOTsintertubulars&sNOTsinterglobularsdentine.
10.sAs45syears-
oldspatientsawokeswithsswollensface,spuffinesssaroundstheseyes,sandsoedemasofsthesupperslip
swithsrednesssandsdryness.sWhensheswentstosbedsheshadsnosswelling,spainsorsdentalscomplai
nts.sExaminationsshowssseveralsdeepssilicatesrestorationssinsthesanteriorsteethsbutsexaminat
ionsissnegativesforscaries,sthermalstests,spercussion,spalpation,spain,sandsperiapicalsareasofsr
amififaction.sThespatient'sstemperaturesissnormal.sThesdaysbeforesheshadsasseriessofsgastroi
ntestinalsx-rayssatstheslocalshospitalsandswassgivensascleansbillsofshealth.
Thesconditionsis:s
A.sAcutesperiapicalsabscess
B.sAngioneuroticsoedema
C.sInfectioussmononucleosis
D.sAcutesmaxillaryssinusitis
E.sAcutesapicalsperiodontitiss-sB.sAngioneuroticsoedema
Angioedmas(TypesIsAllergy)sreactionstoscontrastsmedia.
11.sInternalsresorptionsis,
A.sRadiolucencysoversunalteredscanal
B.sUsuallysinsasresponsestostrauma
, C.sRadiopacitysoversunalteredscanals-sB.sUsuallysinsasresponsestostrauma
12.sOnsreplantationsofsansavulsedstoothsyouscoulds
A.sSurfacesresorption,sexternalsresorption
B.sInternalsresorption
C.sInflammatorysresorption
D.sReplacementsresorption
E.sA,sCsandsD
F.sAllsofsthesaboves-sE.sA,sCsandsD
Explanation
(B)sInternalsresorptionsdoesn'tsfollowsavulsion/replantation.
16.sWhatsissthessequencesfromssuperficialstosthesdeepestsinsdentinescaries?
A.sZonesofsbacterialspenetration,sdemineralisation,ssclerosis,sreparativesdentines
B.sZonesofsbacterialspenetration,sreparativesdentine,sdemineralisation,ssclerosis.s
C.sZonesofsbacterialspenetration,ssclerosis,sreparativesdentine,sdemineralisation.s-
sA.sZonesofsbacterialspenetration,sdemineralisation,ssclerosis,sreparativesdentines
Explanation
ZonessofsDentinesCariess(fromssuperficialstosdeep):
Decomposedsdentines(V)
Bacterialspenetrations(IV)
Demineralisations(III)
Dentinalssclerosiss(II)
Fattysdegenerations(I)
-->sReparativesdentines(inspulp)
17.sThesnervessupplysofsthespulpsisscomposedsofswhichstypesofsnervesfibres?
A.sAfferents&ssympathetics-sA.sAfferents&ssympathetics
Explanation
1-
Autonomicsnervesfiberss(sympatheticsonly):sTheysinnervatesthessmoothsmusclescellssofsthesa
rteriolessandsthereforesfunctionsinsregulationsofsbloodsflowsinsthescapillarysnetwork.
2-Afferents(sensory)sfibers:sThesesarisesfromstrigeminalsn.s
Dentinssensitivitysissexplainedsbysthes'hydrodynamicstheory's=sMovementsofsfluidsinsDTsàsac
tivationsofssmall,smyelinatedsAδsfibersscausingssharpspain.s
InjurysandsinflammationslatersleadstosthesactivationsofsunmyelinatedsCsfiberss(dullsachessens
ation),swhichsaresfoundsinsthesSub-odontoblasticslayersandsthesdeepspulp.
13.sThespercentagesofstotalsdentinessurfaces/sdentinalstubuless0.5mmsawaysfromspulps
