Test Bank for Dental Radiography: Principles and Techniques (6th Edition) by Iannucci & Howerton – Updated 2025/2026 | Complete Q&A with Rationales

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TESTtBANKt:tTITLEtOFtTEXTBOOK:tDENTALtRADIOGR
APHY,tPRINCIPLEStANDtTECHNIQUES,tJOENtIANNUC
CIt&tLAURAtJANSENtHOWERTON,t6THtEDITION

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Chaptert01:tRadiationtHistory



MULTIPLEtCHOICE

1. Radiationtistdefinedtas
a. atformtoftenergytcarriedtbytwavestortstreamstoftparticles.
b. atbeamtoftenergytthatthastthetpowerttotpenetratetsubstancestandtrecordtimagets
hadowstontatreceptor.
c. athigh-
energytradiationtproducedtbytthetcollisiontoftatbeamtoftelectronstwithtatmetalttar
gettintantx-rayttube.
d. atbranchtoftmedicinetthattdealstwithtthetusetoftx-rays.
ANS:t A
Radiationtistatformtoftenergytcarriedtbytwavestortstreamstoftparticles.tAntx-
raytistatbeamtoftenergytthatthastthetpowerttotpenetratetsubstancestandtrecordtimagetshadowstont
atreceptor.
X-radiationtistathigh-
energytradiationtproducedtbytthetcollisiontoftatbeamtoftelectronstwithtatmetalttargettintantx-
rayttube.tRadiologytistatbranchtoftmedicinetthattdealstwithtthetusetof
x-rays.

DIF: Recall REF:t Paget2 OBJ:t t 1
TOP:t CDA,tRHS,tIII.B.2.tDescribetthetcharacteristicstoftx-radiation
MSC:t NBDHE,t2.0tObtainingtandtInterpretingtRadiographst|tNBDHE,t2.1tPrinciplestoftradiophysicstan
dtradiobiology

2. Atradiographtistdefinedtas
a. atbeamtoftenergytthatthastthetpowerttotpenetratetsubstancestandtrecordtimagets
hadowstontatreceptor.
b. atpicturetontfilmtproducedtbytthetpassagetoftx-raystthroughtantobjecttortbody.
c. thetarttandtsciencetoftmakingtradiographstbytthetexposuretoftantimagetreceptorttotx-
rays.
d. atformtoftenergytcarriedtbytwavestortatstreamtoftparticles.
ANS:t B
Antx-
raytistatbeamtoftenergytthatthastthetpowerttotpenetratetsubstancestandtrecordtimagetshadowsto
ntatreceptor.t Atradiographtistatpicturetontfilmtproducedtbytthetpassagetoftx-
raystthroughtantobjecttortbody.tRadiographytistthetarttandtsciencetoftmakingtdentaltimagestbytt
hetexposuretoftatreceptorttotx-
rays.t Radiationtistatformtoftenergytcarriedtbytwavestortstreamstoftparticles.

DIF: Comprehension REF:t Paget2
OBJ:t 1tTOP:t CDA,tRHS,tIII.B.2.tDescribetthetcharacteristicstoftx-
radiation
MSC:t NBDHE,t2.0tObtainingtandtInterpretingtRadiographst|tNBDHE,t2.1tPrinciplestoftradiophysicstan
dtradiobiology

3. Yourtpatienttaskedtyoutwhytdentaltimagestaretimportant.tWhichtoftthetfollowingtistthetc
orrecttresponse?
a. Antoraltexaminationtwithtdentaltimagestlimitstthetpractitionerttotwhattistseentcl
inically.
b. Alltdentaltdiseasestandtconditionstproducetclinicaltsignstandtsymptoms.

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c. Dentaltimagestaretnottatnecessarytcomponenttoftcomprehensivetpatienttcare.
d. Manytdentaltdiseasestarettypicallytdiscoveredtonlytthroughtthetusetoftdentalti
mages.
ANS:t D
Antoraltexaminationtwithouttdentaltimagestlimitstthetpractitionerttotwhattistseentclinically.tMan
ytdentaltdiseasestandtconditionstproducetnotclinicaltsignstandtsymptoms.t Dentaltimagestaretatn
ecessarytcomponenttoftcomprehensivetpatienttcare.tManytdentaltdiseasestarettypicallytdiscover
edtonlytthroughtthetusetoftdentaltimages.

DIF: Application REF:t Paget2 OBJ:t t 2
TOP:t CDA,tRHS,tIII.B.2.tDescribetthetcharacteristicstoftx-radiation
MSC:t NBDHE,t2.0tObtainingtandtInterpretingtRadiographst|tNBDHE,t2.5tGeneral

4. Thetx-raytwastdiscoveredtby
a. HeinrichtGeissler
b. WilhelmtRoentgen
c. JohanntHittorf
d. WilliamtCrookes
ANS:t B
HeinrichtGeisslertbuilttthetfirsttvacuumttubetint1838.t t WilhelmtRoentgentdiscoveredtthe
x-
raytontNovembert8,t1895.t JohanntHittorftobservedtint1870tthattdischargestemittedtfromtthetn
egativetelectrodetoftatvacuumttubettraveledtintstraighttlines,tproducedtheat,tandtresultedtintatgr
eenishtfluorescence.tWilliamtCrookestdiscoveredtintthetlatet1870stthattcathodetraystweretstrea
mstoftchargedtparticles.

DIF: Recall REF:t Paget2 OBJ:t t 4
TOP:t CDA,tRHS,tIII.B.2.tDescribetthetcharacteristicstoftx-radiation
MSC:t NBDHE,t2.0tObtainingtandtInterpretingtRadiographst|tNBDHE,t2.5tGeneral

5. WhotexposedtthetfirsttdentaltradiographtintthetUnitedtStatestusingtatlivetperson?
a. OttotWalkoff
b. WilhelmtRoentgen
c. EdmundtKells
d. WestontPrice
ANS:t C
OttotWalkofftwastatGermantdentisttwhotmadetthetfirsttdentaltradiograph.t WilhelmtRoentgentw
astatBavariantphysicisttwhotdiscoveredtthetx-
ray.t EdmundtKellstexposedtthetfirsttdentaltradiographtintthetUnitedtStatestusingtatlivetperson.t
Pricetintroducedtthetbisectingttechniquetint1904.

DIF: Recall REF:t Paget4 OBJ:t t 5
TOP:t CDA,tRHS,tIII.B.2.tDescribetthetcharacteristicstoftx-radiation
MSC:t NBDHE,t2.0tObtainingtandtInterpretingtRadiographst|tNBDHE,t2.5tGeneral

6. Currenttfasttradiographictfilmtrequirest
%tlesstexposurettimetthantthetinitialtexposurett
imestusedtint1920.
a. 33
b. 98
c. 73