口腔內(nèi)科學(Al型題2)(Oralscience(Al,2))

Oralscience(Altype2).txt2isachancetowinbyitself,and

thedestinyneedstobegrasped.Lifeisitsownfive-line

spectrum,andthedeterrentdoesn，tplayitwel1inperson.Why-

dowealwaysaddthepastwhenwetellastory?Theflowerthat

openedasummer,finallyfalltobecrushedbones,butstill

smiletosaymeaning.A,B,C,DandEarethefivealternative

answerstoeachtest.Pleaseselectoneofthebestanswersand

blackouttheboxescorrespondingtothecorresponding

inscriptionontheanswersheet.

1.Thetypicalclinicalmanifestationofherpeszosterinthe

faceis

A.Clustersoferythema,vesiclesalongthetrigeminalnerve

symmetrydistribution,painandacuteness

B.aclusterofredspotsandblistersononesideofa

trigeminalnerve

C.Clustersoferythema,vesiclesalongthelateraltrigeminal

nervedistribution,theseverepersoncanbeoverthemiddle

linedistributiontothelateraltrigeminalnerve,thepainis

intense

D.Redspotsappearontheface,alongonesideofthetrigeminal

nerve,thenblistersandsubsequentinfectionbecomepustules,

eventuallyscab,leavingscarafterscab

E.that,snottrue

Correctanswer:B

2.Thefixednoticeoftemporarysplintiswrong

A.Shouldmaintaintheoriginalpositionofthetooth,donot

havethepowertopull

B.Applicabletodentalintegrity

C.Adequateadjustmentoftheligationafterfixation,whether

ornotthereisanocclusalinjury

D.Strengthenoralhygieneguidanceandstrictlycontrolthe

plaque

E.don'thavetofixyourteeth

Correctanswer:C

3.Dentalcleftcanaccompanysymptoms

A.thetemperaturestimulatesthepain

B.thebitingpain

C.spontaneouspain

D.noobvioussymptoms

E.alloftheabove

Correctanswer:E

4.Garglefluidmaybeusedtostainmucosa

A.d.obeli's

B.1%NaHC03

C.thebrine

D.washable

E.3%hydrogenperoxide(2timesthinner)

Correctanswer:D

5.Thecharacteristicsofcompoundpulpitisaredifferentfrom

acutepulpitis

A.notemperatureirritation

B.nochemicalirritation

C.nospontaneouspain

Nopain

E.norappingpain

Correctanswer:C

Whichoftheclinicalmanifestationsoftraumaticulcersis

correct

A.Canfindobviousphysicalandchemicalstimulationfactors

orself-injury,scaldandothermedicalhistory

B.ulcersitesandmorphologyareoftenconsistentwith

mechanicalstimuli

C.norecurrence

D.Afterremovalofthestimulus,theulcerquickly

significantlyimprovedorhealed

E.alloftheaboveare

Correctanswer:E

7.Useyourfingerstogentlypushthenormalskinormucosa

toformablister

A.peeltestpositive

B.epidermallysis

C.positive

TheD.0.Ttestwaspositive

E.penicillintestpositive

Correctanswer:C

Themostimportantthingtodoistogotothecavities

A.thefeelingofApatient

B.thedegreeofhardnessandcolouringofdentin

C.holedepth

D.Endoscopicobservation

E.reactionaftertemperaturestimulation

Correctanswer:B

9.Periapicalperiodontitisleadstotheclinical

manifestationofperiodontaldisease

A.thereisnovitalityorabnormalityinthepulp

B.Periodontaldiseaseislimitedtoonetooth

C.x-rayshowsthedestructionzoneoftheperiapicalregionof

theflask

D.Oftenassociatedwithdentallesions

E.alloftheabove

Correctanswer:E

10.Thefirstgoodhairtoothsurfaceis

A.

B.Palatinesurface

C.Nearmiddlesurface

distend

E.bitplane

Correctanswer:E

11.Whichofthefollowingisnotcharacteristicofadult

periodontitis

A.toothshift

B.Formationofperiodontalpockets

C.guminflammation

D.Boneresorptionofalveolarbone

E.Looseteeth

Correctanswer:A

Thelongrange(standard)chemotherapydrugsinthetreatment

oforaltuberculosisarenotincluded

A.isoniazid

streptomycin

rifampin

D.ethambutol

E.Forammonia

Correctanswer:C

13.Itistruethatthefollowingoperationsareperformedfor

thepreservationofhealthydentaltissue

A.Theminimumexpansionoftheholeshape

B.thegummarginoftheholeislocatedattheteethofthe

gingivalmargin

C.Trynottomakepreventiveextensions

D.Thereisadevelopmentaldefectinthegapfissurewhichcan

beusedforprevention

E.alloftheaboveiscorrect

Correctanswer:E

14.Whentreatingacutepulpitis,thefirstchoiceshouldbe

considered

A.anti-inflammatory

B.eliminatepathogenicbacteria

C.painlessorminimizingpain

D.preventthespreadofinfection

E.protectthepulpoflife

Correctanswer:C

15.Becauseofeasymisdiagnosis,theholeislesseasyto

operate,anditisbesttouseafterexposuretothepulp

A.Drypulp

B.directmedullarysurgery

C.indirectmedullarysurgery

D.Pulpamputation

E.rootcanaltherapy

Correctanswer:D

16.Thepurposeofthedovetailis

A.ObtainAgoodsolidposition

B.Goodresistance

C.forthepurposeofcompletelyremovingcaries

D.Tomaketheholelookbeautiful

E.forthefilling

Correctanswer:A

Themainbacteriumthatcausesgingivitisis

A.gram-positivebacillus

B.Gram-negativebacteria

spirochete

chlamydia

E.viscousactinomycetes

Correctanswer:E

18.Themostreliablewaytogaugethevitalityofthepulpis

tocheck

A.temperaturetest

B.Electricaltest

C.selectiveanesthesia

D.experimentalbackup

E.Xtest

Correctanswer:D

Commonplaquedisplayagent

A.Magentasolution

B.dragonbile

C.Iodizedoil

D.methyleneblue

E.fluoresceinsodium

Correctanswer:A

20.Themosteffectivetreatmentforacuterootacutemucosal

abscessisthetreatment

A.Takeanti-inflammatorypainkillers

B.Pulposus

C.opendischarge

D.adjusttheteethandgrindtheteeth

E.acupunctureanalgesia

Correctanswer:C

21.Theharmfulsubstancesthatenterthepulparenotincluded

A.endotoxin

B.collagenase

amylase

D.hyaluronate

E.Chondroitinsulfate

Correctanswer:C

Itisbelievedthatthemaincausesofcariesarehuman

A.lactobacillus

B.salivastreptococcus

C.streptococcus

D.Streptococcusmutans

E.streptococcus

Correctanswer:D

23.Thecurrentwaterqualitystandardfluorineconcentration

inChinais

A.0.5PPM

B.1.0PPM

C.0.5"1.0PPM

D.1~2ppm

E.2PPM

Correctanswer:C

24.Themethodofplasticchemotherapyshouldnotbeused

A.theyoungpermanentteeththathavenotyetclosed

B.babyteeth

C.Theanteriorteethoftheinterlockingoftherootcanal

Da+B

E.A+B+C

Correctanswer:D

Descriptionoftheclinicalperformanceofthepalmetatosis-

periodontaldestructionsyndromeiswrong

A.skinandperiodontaldiseasebecomemorecommonbeforeage

4

B.childrenwithmentalretardationbutnormaldevelopment

C.theinvasionoftheteethandthepermanentteeth

D.Haveadeepperiodontalpocket,

Thealveolarboneisabsorbedrapidly

E.thediseaseisrareandtheprevalenceofthediseaseisabout

1/1millionto4/1million

Correctanswer:B

26.Thecorrectsequenceofplaqueformationinthegumis

A.Acquiredmembraneformation,initialaggregation,rapid

bacterialgrowthandbacterialplaquematuration

B.Initialaggregation-acquiredmembraneformation-bacteria

rapidgrowthandpropagation,bacterialplaquematuration

C.Initialaggregation-bacterialgrowthandpropagation-

acquiredmembraneformation-plaquematuration

D.Theformationofsexualmembranes:rapidgrowthand

propagationofbacteria

E.Earlyaggregation-bacterialgrowthandpropagation-

bacterialplaquematuration

Correctanswer:A

27.Itiswrongtoidentifywhichitemsarenotfullyidentified

withdentalenamel

A.Fluorosisisgoodforpermanentteeth,toothenamelisnot

fullydeveloped

B.toothenameldevelopmentofincompletechalkboundaryis

clear,andfluorosisisnotclear

C.Toothenamelisnotfullydevelopedinasingletoothora

setofteeth,andfluorosiscanoccurinmostteeth

D.fluorosispatientsmayhavealifehistoryinhighfluoride

area

E.Theenamelgrowthanddevelopmentoftheenamelareparallel

tothegrowthanddevelopmentofenamel,andthefluorosisdoes

notcoincide

Correctanswer:A

28IIherpessimplexvirustypeisassociatedwithwhichofthe

followingtheoccurrenceofdiseases

A.Shingles

B.chickenpox

C.Pseudomembranousstomatitis

D.cervicalcancer

E.nasopharyngealcarcinoma

Correctanswer:D

Periodontalsystemtherapyisconsistentthroughout

A.adjusttheocclusion

B.Gingiva

C.Rootsurfaceformation

D.Plaquecontrol

E.drugtherapy

Correctanswer:D

30.Whichofthefollowingisnotthereasonfortheinsertion

ofverticalfood

A.liftingoftheformabnormal

Theadjacencyisananomaly

C.Thetipofthejawfilling

D.Looseteeth

E.gingivanipples

Correctanswer:E

31.Whichofthefollowingiswrongwithregardtojuvenile

periodontitis

A.Themajorityofyoungpeopleinadolescenceto25yearsof

agehavemorewomenthanmen

B.Earlypatientplaque,dentalcalculusandperiodontaltissue

destructionwerenotdirectlyproportionaltotheamountof

localirritants

TheC.X1ineshowsthatthefirstmolarsareabsorbedinthe

nearandfar,andtheincisorsaremorecurved

D.thecourseofillnessisprogressingrapidly

E.mayhaveafamilyhistory

Correctanswer:C

32.Thetreatmentofiodiphenolisapplicable

A.gumbag

B.bonebag

C.bonepouch

D.Swollengums

E.periodontalbagoverseer

Correctanswer:E

33.ThelackofvitaminChasaneffectontoothdevelopment

A.Dentindegenerationcannotformnormaldentin

B.Glazingcellscannotbedifferentiatedintohigh-mastcells

C.calciumsaltisprecipitatedinthetooth

D.Theformationofperiodontalmembrane

E.Influenceofenamelmineralization

Correctanswer:A

34.Thebestevidenceofthemicrobeassociatedwith

periodontaldiseaseis

A.accompaniedbyactinobacillus,themiddleplatycobacterium,

andthebacillus

B.gumporphyrinmonspora,mesosporium,anddentinespirals

C.,actinobacteriaceae,gumporphyrinmonospora,bacillus

fosbacillus

D.Themiddleplatycobacterium,bacillusfusiaeandthe

corycobacterium

E.coli,bacilli,andnuclearClostridium

Correctanswer:C

35.Thepossibleexplanationforthepaincausedbytheclinical

toothessenceallergyisthatofcoldandhotandsweet

stimulation

A.

Thedentinnerveendingsexistinthedentin,soitcanbe

transferredfromthesurfaceofthetoothtothepulp

Acetylcholineenzymeintheplasticineoftheessentialcells

oftheteeth,whichcancausenerveconductionandcausepain

afterbeingstimulated

C.ondentineexternalstimuluscausingdentintubulecontents

inwardoroutwardflow,theflowofthisexceptionispassed

tothedentalpulp,causedentalpulpnervefibersofexcitement,

producepain

D.becausetheexpansioncoefficientofthefluiddentinesmall

tubewithsmal1dentinwallcoefficientdiffersverybig,the

fluidtemperaturestimulationcanmakethesmalltubeexpansion

orcontraction,causearelativedisplacementoftheliquid,

triggerpain

E.alloftheaboveare

Correctanswer:D

36.Alletchingsystemsreferto

A.Apreparationthatcansourtheenamel

B.thepreparationoftheessenceofacidetching

C.Thepreparationofcementum

D.Preparationofacidetchingenamelandacidetchingessence

E.Apreparationthatisbothanacidetchingandanacid-etched

bone

Correctanswer:D

37.Accuratedeterminationofthepresenceofperiodontalbags

A.visualdiagnosis,gingivalswelling

B.dependingonthediagnosisandthecolorofthegums

C.Bitetest

D.Periodontalprobe

E.X.X-rayexamination

Correctanswer:D

38.Thebestpartofpubertyisgingivitis

A.Maxillofacialgummargin

B.Maxillarygrindingofthepalatalsideofthepalate

C.Anteriorlipandgingiva

D.Uppermaxillarybicuspidbuccalmargin

E.Thenipplesofthelowerjaw

Correctanswer:C

Theclinicalmanifestationofthemaptongueis

A.mostofteninearlychildhoodandinchildhood

B.Goodfortongue,tongueandtongue

C.thetongueisatrophied

D.thereisavariationofthe"walk"inthedayandnight

E.generalnopainandotherbadfeelings

Correctanswer:D

40.Thebacteriathatarenotassociatedwithperiodontal

destructionare

A.Surfacesubstanceofbacteria

B.Theglialenzymeandhyaluronicacidenzymesecretedby

bacteria

C.bacterialtoxin

D.bacterialmetabolism

E.bacteriasizeandmorphologyofbacteria

Correctanswer:E

41.Thebestpartoftheverticalincisionofperiodontal

surgeryshouldbeselected

A.adjacenthealthyteeth

Thenearandfaraxisoftheadjacenthealthytooth

C.adjacenthealthyteeth

D.Themostprominentrootofadjacenthealthyteeth

E.theboneedgeofthelesion

Correctanswer:B

42.Whichofthefollowingisnotthemodeoftransmissionof

AIDS

A.transfusiontransmission

B.sexualcontacttransmission

C.oraldropletsspread

D.Maternalandinfantverticaltransmission

E.intravenousdruguse

Correctanswer:C

43.Forthesakeofcleaning,preventthesecondarycaries,the

gapwidthbetweenthegingivaandadjacentteethshouldbeat

least

0.5mm

B.1mm

C.1.5mm

D.2mm

E.2.5mm

Correctanswer:A

44.Thetoothmigrationdirectionofthejuvenileperiodontitis

A.Upperincisorlipdisplacement

B.Lowerincisorlipdisplacement

Theupperincisorsareshiftedinthedistance

D.Thelowerincisorsshiftinthedistance

E.upperandlowerincisedlipdistalshift

Correctanswer:E

Themostcommoncauseoftoothmarrowinfectionsis

A.trauma,

B.Periodontitis

C.bloodsourceinfection

D.cavities

E.toothdevelopmentdeformity

Correctanswer:D

46.Treatmentfordentalcaries

A.drugtherapy

B.drugtherapy+abrasion

C.placement

D.

Stowage+drugtherapy+abrasion

E.Medication+stowing+removal

Correctanswer:D

47.Thedescriptionofcongenitalanodontiaisincorrect

A.moredominantinheritance

B.forhereditarydiseases

C.Permanentteethandteeth

D.Oftenamanifestationofimmatureleafdevelopment

Thereareonlyafewteethornoteethinthemouth

Correctanswer:A

48.Thepaincharacteristicsofacutepulpitisdonotinclude

A.spontaneous,paroxysmalpain

B.thetemperaturestimulatedthepain

C.nightpain

D.Paincan'tbelocated

E.painissporadicorinvolvedandcansometimesbereleased

totherightsideofthetooth

Correctanswer:E

49.Foodisthecauseofcaries

Theretentionoffoodonthesurfaceofthetoothcausesdecay

B.itismoreimportanttoeatsugarthantoeatsugar

C.foodphosphoruscontentisassociatedwithcaries

D.Thephysicalpropertiesoffoodarecloselyrelatedtothe

occurrenceofcaries

E.sucrosemustbeabletobecariesthroughbacterialaction

Correctanswer:B

50.Thefollowingblistersarelife-threatening

A.scar

B.normalblisters

C.bullousblisters

D.Pleomorphicpemphile

E.Blisterlichen

Correctanswer:B

Themainmethodofplaquecontrolinperiodontalmaintenance

is

A.oftenuseantimicrobialmouthwash

B.Takeantibioticsregularly

C.usefluoridetoothpaste

D.Takethetoothzhouning

E.correctbrushingandflossing

Correctanswer:E

52.Silveramalgamfillingsareusedforcariesordeepcaries,

whichneedtobelastbecauseofthesilveramalgamalloy

A.expansibility

B.liquidity

C.Conductivity

D.solubility

E.discoloration

Correctanswer:C

53.Thefollowingisnotabnormalinthestructureoftheteeth

A.toothenamelisnotfullydeveloped

B.Internalcavity

C.tetracyclineteeth

D.congenitalsyphilisteeth

E.Fluorosis

Correctanswer:B

54.Drugsthatcausetetracyclineteethareavailable

A.Vanamycinandtetracycline

B.doxycyclineandmethycin

C.penicillinandshrinktetracycline

D.streptomycinandchloramphenicol

E.cleanandgentamicin

Correctanswer:B

55.Themostcommonlyusedroutinediagnosticmethodsare

A.temperaturestimulationtest

B.visualdiagnosis

C.transparency

d.d.

percussion

Correctanswer:D

56.Anyofthefollowingpulplesionsmaycauseperiodontal

disease

A.acuteserouspulpitis

B.Acutesuppurativepulpitis

C.chronicpulpitis

D.Acuteperiapicalabscess

myelin

Correctanswer:D

57.Itisnotinfectiousdiseases

A.Shingles

B.Recurrentherpesstomatitis

C.oraltuberculosis

D.thesnowmouth

E.bullousblisters

Correctanswer:E

58.Themainroleofthesedativesisnotincluded

A.protectiveeffect

B.Bactericidalaction

C.Hemostasis

D.Painrelief

E.fixation

Correctanswer:B

59.Thebestfillingofthefollowingpasterootcanalfilling

materialis

A.Calciumhydroxide

B.threezincpaste

C.Threepoly-formaldehydepaste

D.Zincoxideeugenolcement

E.chloroformgum

Correctanswer:A

60.Inanutshell,theformationoftheperiodontalpouchis

correct

A.

Gingivalconnectivetissueinflammation,collagenfiber

destruction,combinedwiththeproliferationofepithelial

root

B.collagenfiberdestruction,gingivalconnectivetissue

inflammation,combinedwiththeproliferationofepithelial

root

C.Gingivalconnectivetissueinflammation,combinedwiththe

proliferationofepithelialrootandcollagenfibers

D.collagenousfibrousdamage,combinedwiththeproliferation

ofepithelialrootandgingivalconnectivetissueinflammation

E.Combinedwithepithelialrootproliferation,gumconnective

tissueinflammation,collagenfiberdestruction

Correctanswer:A

61.Thecharacteristicclinicalmanifestationsofdrug

anaphylaxisandskinlesionsaretheclinicalmanifestations

A.erosion

B.ulcer

C.exudesandformsawhiteandwhitefilm

D.Obviouspain

E.Irisredspot

Correctanswer:E

62.Themosteffectivetreatmentfororalwhitekeratosisis

A.surgicalresection

B.OralvitaminAacid

C.PartialapplicationofvitaminAacid

D.removelocalstimuli

E.Localinjectionof2.5%bonithronsuspension

Correctanswer:D

63.Thefollowingisthecontraindicationoftheendodontic

test

A.hyperthyroidism

B.coronaryheartdisease

hypertension

D.installapacemaker

E.epilepsy

Correctanswer:D

64.Therootcanalshouldbeusedforthetreatmentofpulp

amputationandpostoperativeconditions

Thebleedingisdarkredafterbreakingthemarrow

B.pulpnecrosisandpus

C.Postoperativeobservationofinflammatoryreactionor

rapping

Da+C

E.A+B+C

Correctanswer:E

65.Whatisthelocalstimulusforgingivitis

A.defectiverestorer

B.foodinlaid

C.tartar

D.plaque

E.dentaltrauma

Correctanswer:D

Thereareseveralkindsofsymptomsthatcanbepointedoutin

thepainareaexcept

A.acuterootabscess

B.acutegingivitis

C.Acutepulpitis

D.Dentinissensitive

E.acuteperiodontalabscess

Correctanswer:C

67.Themostimportantbacteriaintherootcanal

A.deformedstreptococcus

B.facultativeanaerobe

C.obligateanaerobes

D.Staphylococcusaureus

E.whitecoccus

Correctanswer:C

68.Periodontalmaintenancetherapyisincluded

A.Regularrevisits

B.Regularcleaning

C.maintaingoodoralhygiene

D.antibacterialdrugswashundergargleorgingiva

E.alloftheabove

Correctanswer:E

Thecompleteremovalofthestoneteethisduetodental

calculus

A.Mechanicalstimulation

B.Canadsorbtoxicsubstances

C.it'swherethebacteriaarestuck

Da+B+C

E.Cancausegingivalhyperplasia

Correctanswer:D

70.Whichofthefollowingisnon-self-inf1ictedulcer

A.Bedsoreulcer

B.Self-inflictedulcer

C.Chemicalburnulcer

D.Heatinjuryulcer

E.alloftheaboveare

Correctanswer:A

Thefrontteethareinthemiddleofthetoothandhaveanearly

contact

A

B.Loweryourteeth

C.uppertonguefossa

D.Lowerteeth

E.Topofthetongue

Correctanswer:C

72.Thedentaldiagnosisshouldbeincludedintheendoscopy

A.colorandluster

B.Shapeandsize

ThenumberofC.

D.Arrangementandcontact

E.alloftheaboveare

Correctanswer:E

Thebirthdefectisdividedintotwoparts

A.individualteethmissing,partialteethmissing,fullmouth

missing

B.Lackofteeth,toothdisease,andnotoothdisease

C.Theupperjawmissingteeth,thelowerjawteethmissing,

theentiremouthismissingteeth

BothD.AandBareright

E.

AandCareboth

Correctanswer:D

74.Themaincauseofinjurytothepulpisthepreparationof

thehole

A.dentinisA-complex

B.Cutthedentinetubule

C.Cutthedentinprocessofdentin

D.Heatproducedwhencutting

E.theturbineisusedwhencutting

Correctanswer:C

75.Thepaincharacteristicsofchronicpulpitis

A.acutespontaneouspain

B.severenightpain

C.Involvedpain

D.Mildspontaneousdullpain

E.A+B+C

Correctanswer:D

76.Themostvaluablediagnosticindicationsofthemyelinare

A.x-rayscreening

B.temperaturestimulationtest

C.Electricaltest

D.Tofindoutwhetherthereisanysensationorpaininthe

rootoftheroot

E.percussion

Correctanswer:D

77.Earlyadolescentperiodontitischaracteristicdoesnot

include

Gumbleeding

B.Goodforadolescentsto25yearsofage

C.Plaque,lowcalculus,slightguminflammation,butdeep

periodontalpocket

Atypical“arcabsorption“ofthefirstmolarisseeninthe

D.X.

E.earlyteethlooseningandshifting

Correctanswer:A

78.Contraindicationsfortheremovalofteeth

A.haematosis

B.endocrinedisease

C.severecardiacdysfunction

D.thereisacuteinflaminationintheperiapicalweek

E.alloftheaboveare

Correctanswer:E

Thelooseningoftheteethisnotrelatedtowhichofthe

followingfactors

A.Boneresorptionofalveolarbone

B.trauma

C.Acuteinflammationofperiodontalligament

D.changesinfemalehormonelevels

E.gumsareheavilyinflamed

Correctanswer:E

80.Thereasonsforthefalsenegativereactionofthepulptest

werenotincluded

A.usedanestheticbeforetesting

B.theroottiphasnotyetdevelopedcompletelynewteeth

C.Dentalpulp

D.theexcessivecalcificationofteethinthecanal

Theteeththathavejustsufferedtrauma

Correctanswer:C

81.Theoperationofpulpotomyisnotrequired

A.Thedrillneedleisparalleltothelongaxisofthetooth

B.Perforatedintothemedullarycavitybyperforatedpulphorn

Useaballdrilltogrindthetopofthemarrow

D.Justexposetherootcanal

E.that,snottrue

Correctanswer:D

Thekeytopermanentteethis

A.therelationshipofthefirstconstantmolar

B.Therelationshipofconstantmolar

C.Guaranteethatthefirstpermanentmolarhasnodecay

D.Ensurethatthesecondconstantmolarhasnodecay

E.Timelyclosureofthenestgrooveofthe1stand2ndmolars

Correctanswer:A

83.ThebabyteethIIpreparationtoformakindofholeinwhat

circumstancescanthestepsformcomplexsurfacehole

A.Thecontactofthebabyteethiscloser

B.Whenthegingivaiscloser

C.Dentalcariesaremoreproximal

D.Dentalcariesandsurfaceofgingiva

E.toothcontact,gingivaorcaries

Correctanswer:E

84.Recurrentoralulcer