牙体牙髓病学英文试题

1牙体牙髓病学英文试题一、选择题1.对牙髓最具有破坏性的是CA.Nd激光B.CO2激光C.红激光D.光固化灯E.牙髓活力电测定仪2.感染根管常见的优势菌不包括CA.普氏菌B.放线菌C.G＋细菌D.真杆菌E.梭形杆菌3.备洞时易损伤牙髓的因素不包括BA.施力大B.用冷却剂C.持续常时间钻磨D.制备深的窝洞E.不用冷却剂4.与顽固性根尖周病变和窦道经久不愈可能有关的细菌为BA.普氏菌B.放线菌C.G＋细菌D.真杆菌E.梭形杆菌5.判断牙髓活力最可靠的检查方法是DA.热诊B.冷诊C.牙髓活力电测定D.试验性备洞E.X线检查6．诊断残髓炎最准确的依据是EA.叩诊B.牙髓活力测试C.病史D.症状E.探查治疗后根管有痛觉7．急性根尖周脓肿最佳的排脓途径CA.从牙周间隙排脓B.从颊、舌侧粘膜或皮肤排出C.经根管从龋洞排脓D.从上颌窦或鼻腔排脓E.以上都不对8．感染侵入牙髓组织的途径EA.深龋B.深牙隐裂C.深牙周袋D.重度磨耗E.以上都有可能9．根尖周炎疼痛最剧烈的阶段是BA.粘膜下脓肿期B.骨膜下脓肿期C.浆液期D.根尖脓肿期E.瘘管形成期10．上颌第一磨牙的根管形态特点是：CA.多数是2根管，即1个颊根管和1个腭根管B.多数是3根管，即1个近颊、1个远颊和1个腭根管C.多数是4根管，即2个近颊、1个远颊和1个腭根管D.多数是4根管，即1个近颊、2个远颊和1个腭根管2E.多数是4根管，即1个近颊、1个远颊和2个腭根管11．15号标准根管锉的锉尖直径和刃部末端直径分别是：DA.0.10mm和0.47mmB.0.10mm和0.45mmC.0.15mm和0.45mmD.0.15mm和0.47mmE.以上都不对12．弯曲根管预备的常见并发症是：AA.根管台阶B.药物性根尖周炎C.牙周组织坏死D.皮下气肿E.误戏和误咽13．根管预备的工作长度是指：DA.牙的实际长度B.从牙冠参照点到牙本质牙釉质界C.从牙冠参照点到解剖根尖孔D.从牙冠参照点到生理根尖孔E.从牙冠参照点到距生理根尖孔0.5~1mm14．根管成形的标准是：AA.根管比原来直径至少扩大3个器械号B.根尖预备到20号标准器械C.根管内无大量渗出D.根管冲洗无混浊液体E.根管内无严重气味15．下列哪一项不是牙髓切断术的潜在并发症：EA.根髓感染B.根管钙化C.内吸收D.牙髓坏死E.髓室穿孔16．下列哪一项描述不是玻璃离子粘固剂修复术窝洞预备的特点（）CA.玻璃离子粘固剂与牙体组织有化学粘接，对固位形的要求可放宽B.不必作倒凹、鸠尾等固位形C.去除龋坏牙本质，必须作预防性扩展D.窝洞的点、线角圆钝E.洞缘釉质不作斜面17．深龋患者激发痛较重，洞底软龋能够彻底去净，治疗方法应选择（）CA.双层垫底，一次完成充填治疗B.局麻下开髓失活，行牙髓治疗C.先做安抚治疗，待1~2周复诊时症状消除后，再以双层垫底充填治疗D.实行活髓切断术E.间接盖髓、双层垫底，一次完成充填治疗18．临床上不易查出的继发龋可用下列哪些方法帮助诊断（）CA.探诊B.温度测验C.X线D.染色法E.麻醉法19．深龋备洞时，下列哪项措施是错误的（）AA.洞底平、侧壁直，两相垂直B.去尽腐质C.保护牙髓D.洞缘线圆钝E.尽量保留健康牙体组织20．复合树脂充填后脱落的原因如下，除了（）A3A.制备了固位形B.牙齿表面未注意清洁C.酸蚀后的牙面接触唾液D.未制备洞斜面E.充填体过薄21．下列哪项不是窝洞的基本固位形()BA.侧壁固位B.钉道固位C.倒凹固位D.鸠尾固位E.梯形固位22．制备倒凹是为了：()BA.获得良好的抗力形B.获得良好的固位形C.便于垫底D.便于充填E.便于放置盖髓剂23．V类洞充填备洞时，要求：()AA.适当的固位形B.严格的抗力形C.必须做鸠尾D.口小底大E.底平壁直24．右下颌第一恒磨牙颊面龋洞破坏越过边缘嵴至咬合面窝沟是：()AA.I类洞B.II类洞C.III类洞D.IV类洞E.V类洞25．垫底的部位为：()DA.仅在髓壁B.仅在轴壁C.仅在侧壁D.仅在髓壁和轴壁E.任何壁均可垫26．下列说法正确的是BA.男性患龋率略高于女性B.龋病流行率主要随社会经济模式而变化C.龋病流行模式依靠地理环境而改变D.遗传因素对龋病的发生和发展产生重要的影响E.环境因素对龋病的发生和发展无影响27．釉质龋损害的4个区不包括AA.坏死区B.透明带C.暗带D.损害体部E.釉质表面层28．牙本质龋损在光镜下可看到微生物渗透至牙本质小管的区域是BA.坏死区B.感染层C.牙本质脱矿区D.硬化区E.修复性牙本质层29．静止龋属于BA.急性龋B.慢性龋C.继发龋D.牙釉质龋E.牙骨质龋30．病程进展快，多数牙在短期内同时患龋的急性龋称为EA.湿性龋B.慢性龋C.干性龋D.继发龋4E.猛性龋31.WhichisthebestwayofpaincontrolforendodontictreatmentALocalanestheticsBDevitalizationCAnalgesicsDOcclusalreductionEIncisinganddrainage32.WhichoneisnotthereasonforuseofrubberdamAProtectaspirationorswallowingofinstrumentsorirrigantsBEliminatethedentalfearofpatientsCImprovevisibilityDReducedriskofcross-contaminationELegalconsiderations33.ThefollowingstatementsarecorrectexceptANearlyallcanalsexhibitacertaindegreeofcurvature.BTheremaybemorethanonecanalswithinoneroot.CTheapicalforamenusuallyopensattheanatomicalapex.DApicalconstrictionoccursat0.5~1mmfromtheapicalforamen.ELateralandaccessorycanalsmightbethecauseoftreatmentfailure.34.WhichoneiswrongregardingtheprincipleofaccesscavityAStraight-lineaccessBConservationoftoothstructureCUnroofingofthechamberandexposureofpulphornsD.FacialsurfaceofanteriorteethEOcclusalsurfaceofposteriorteeth35.Theadvantagesofgutta-perchaasafillingmaterialareAItiscompactibleandadaptsexcellentlytotheirregularitiesandcontourofthecanalBItisradiopaqueCItcanbeeasilyremovedfromthecanalwhennecessaryDItcanbesoftenedandmadeplasticbyheatorbyorganicsolventsEAlloftheabove36.Whichoneisincorrectaboutthecriteriaoftherootcanalisreadytobefilledafterthecompletionofrootcanalcleaningandshaping?AThetoothisasymptomatic.BThecanaliswet.CThereisnosinustract.DThereisnofoulodor.EThetemporaryfillingisintact37.Whichoneisnotthepathwaysofpulpalandperiapicalinfections?ADentinaltubulesBPulpexposureCGingivalDPeriodontalligamentEAnachoresis38.Tug-backisachievedandthecanalisreadyforfillingAWhenthegutta-perchahasextendedbeyondtheapexBWhenthegutta-perchaiseasilyremovedfromtherootcanalCWhenthegutta-perchaplacedtoapicalconstrictionexhibitsresistanceonremovalDAftercementationENoneofabove539.MostrootcanalinfectionsinvolveAasingleobligateanaerobicspeciesBmultipleanaerobicspeciesonlyCmixedaerobicandanaerobicmicroorganismsDmultipleaerobicspeciesonlyEnoneofabove40.Anabnormallyshapedtooththatmayappearasanextrawidecrown,anormalcrownwithanextraroot,orothercombinationsresultingfromtheunionoftwoadjacenttoothgermsbydentinduringdevelopmentiscalledAfusedteethBconcresenceofteethCgeminatedteethDdilacerationsoftoothEtaurodontism41.Whichisn’tthenon-operativetreatmentofdentalcariesinthefollowing?AapplicationoffluorideBapplicationofAPFgelCremineralizativetherapyDenameloplastyEpitandfissuresealing42.Whichisnottheaimofoperativetherapyonthedentalcariesmanagement?AToremoveinfecteddentineandprohibitcariesBToprotectthepulpandavoidpainCToenhancethestrengthofthetoothDTofacilitateplaquecontrolETorestoretheappearance(ofteeth)anditsfunction43.WhichisthebeststatementaboutresistanceformAResistanceformisthedesignofacavityinsuchawaythattheremainingtoothsubstanceandtherestorativematerialcanwithstandmasticatorystressBThebulkrequiredwilldependontheflexuralstrengthofrestorativematerial.Inthecaseofamalgamitisestimatedthataminimumof1.5-2mmthicknessoftherestorativematerialisrequiredtowithstandmasticatorystressCIfamarginalridgeisfoundtobetooweakinthecauseofanocclusalcavitypreparation,aClassIIcavitymayhavetobepreparedinstead,soastoelim