口腔英語試題

口腔英語試題一、選擇題（Choosethebestanswer.）Whatisthetermforthehard,calcifiedtissuethatcoversthecrownofatooth?

A.Enamel

B.Dentin

C.Cementum

D.PulpWhichofthefollowingisNOTatypeofperiodontaldisease?

A.Gingivitis

B.Periodontitis

C.Toothdecay

D.AbscessWhatisthemainfunctionofsalivainthemouth?

A.Digestionoffood

B.Lubrication

C.Protectionagainstbacteria

D.AlloftheaboveWhichinstrumentiscommonlyusedforscalingteethtoremoveplaqueandtartar?

A.Dentaldrill

B.Scaler

C.Probe

D.MirrorWhatisthemostcommoncauseoftoothdecay?

A.Bacteria

B.Sugar

C.Acid

D.Geneticfactors二、填空題（Fillintheblanks.）The_______isthesofttissueinsideatooththatcontainsbloodvesselsandnerves.Brushingyourteethatleast_______timesadaywithfluoridetoothpastehelpspreventtoothdecay._______isacommonperiodontaldiseasethataffectsthegums.Salivacontainsenzymesthathelp_______carbohydratesinthemouth.Regulardentalcheck-upsandprofessional_______areimportantformaintaininggoodoralhealth.三、簡(jiǎn)答題（Shortanswerquestions.）Describetheimportanceofflossinginadditiontobrushingyourteeth.Explaintheroleoffluorideinpreventingtoothdecay.Whatarethesymptomsofgingivitis?Howdoesadentisttypicallytreatacavity?Discusstheimportanceofmaintaininggoodoralhygienethroughoutlife.答案及解析選擇題解析1.【答案】A

【解析】Enamel（牙釉質(zhì)）是覆蓋牙齒冠部的堅(jiān)硬鈣化組織。2.【答案】C

【解析】Toothdecay（齲齒）不是牙周病的一種類型，而是牙齒硬組織的破壞。Gingivitis（牙齦炎）、Periodontitis（牙周炎）和Abscess（膿腫）都是牙周病。3.【答案】D

【解析】唾液在口腔中的主要功能包括消化食物、潤(rùn)滑口腔以及保護(hù)口腔免受細(xì)菌侵害。4.【答案】B

【解析】Scaler（刮治器）通常用于刮除牙齒上的牙菌斑和牙石。5.【答案】A

【解析】Bacteria（細(xì)菌）是齲齒最常見的原因，它們與食物殘?jiān)械奶欠磻?yīng)產(chǎn)生酸，從而腐蝕牙齒。填空題答案pulptwoGingivitisdigestcleanings簡(jiǎn)答題答案Flossingisimportantbecauseitremovesplaqueandfoodparticlesfrombetweentheteethwhereatoothbrushcannotreach.Thishelpspreventgumdiseaseandtoothdecay.Fluoridehelpspreventtoothdecaybystrengtheningtoothenamel,makingitmoreresistanttoacidattacksfrombacteriainthemouth.Italsoaidsinremineralization,theprocessbywhichmineralsareredepositedintotoothenamel.Symptomsofgingivitisincludered,swollen,andbleedinggums.Badbreathandsensitiveteethmayalsobepresent.Adentisttypicallytreatsacavitybyremovingthedecayedportionofthetoothwithadrillandthenfillingtheholewithadentalmaterialsuchasamalgamorcompositeresin.Maintaininggoodoralhygienethroughoutlifeisimportantbecauseithelpspreventtoothdecay,gumdisease,andotheroralhealthproblems.Regularbrushing,flossing,and