口腔专业英语 试题.doc

1.(A) is the space contains the pulp. A. Pulp cavity B. pulp horn C. pulp chamber D. pulp canal2.The ( B) consists of 8 incisors,4canines,8 premolars, and 12 molars. A .milk teeth B. permanent dentitions C. primary dentitions D. deciduous dentitions3.(A)are frequently extracted for othodontics purposes. A. Fist premolars B. Second premolars C. First molars D. Second molars4.The openings of the (B )ducts are on the inner sides of the cheeks, opposite the second upper molar teeth. A. submandibular B. parotid C. sublingual D. platal5.The ( C) membrane surrounding the necks of the teeth is the gingiva or gum. A .mucosa B. mucus C. mucous D. mucosal6.irst molar usually has five _A_,three buccal and two lingual. A. cusps B. caries C. roots D.dentition7.Root concavities are located on the mesial and distal surfaces of the mesial root; they are especially prominent on the first molar because this root usually has two _B_. A. pulp cavities B. pulp canals C. pulp chambers D. pulp horns8.The greater part of the tooth consists of _C_. A. pulp B. enamel C. dentine D.cementum9.Doctor: Sit in the chair please. Lean your head back _D_ the chair now. Whats the trouble?Patient: I have an awful toothache. A.on B. to C.in D. against10.Enamel consists of rods or prisms in an interprismatic substance that is slightly less _A _ than the rods themselves. A. mineralized B. weared C.demineralized D.polished11. To fill these _A_ to say nothing of extracting teeth, periodontal and prosthodontic treatment and straightening the average American would need six hours of a dentists time.A. cavities B. hole C. dentin D. pulp12. The _B_ processes within the dentinal tubules degenerate, and the empty tubule becomes plugged with calcium salts and forms a harder dentin.A. orthodontic B. odontoblastic C. periodontic D. endodontic13. The typical histological picture of acute _D_ (hyperemia, exudate, polymorphonuclear leukocytes) is almost always associated with that chronic pulpitis (lymphocytes, plasma cells etc.).A. infection B. trauma C. tuberculosis D. inflammation14. In the case of active _A_ a of the pulp, where there are as yet no pus filled vacuoles or pronounced edema, other mechanisms are at work.A. hyperemia B. disintegration C. abscess D. inflammation15. Traumatic effects on the tooth or alveolus sometimes are beyond repair. Many teeth in the line of _B_ fracture are removed to treat the fractured bone.A. head B. jaw C. bone D. mouth16. With the increasing demand for aesthetic dentistry, there has been an increased interest in the use of resin-based composites for (A ) restorations. A. anterior B. inferior C. posterior D. superior17. The one which is universally recognized is Angles classification which is based on arch relationship in the ( D ) plane. A. axial B. coronal C. cross D. sagittal18. There are fixed type and ( D ) type appliance for straightening the teeth.A. activity B. function C. movement D. removable19. Physical violence and ( A ) accidents lead the list in a municipal hospital for the fracture of the mandible. A. automobile B. bike C. car D. motor20. After extraction, dont rinse for 24 hours as it may disturb the blood ( A ).A. clot B. dollop C. loaf D. lump阅读理解TEXT1The Risks and Benefits of Orthodontic TreatmentBenefitsThe orthodontic treatment that has been suggested for you may have overall benefits in the appearance of your face and teeth and in maintaining good oral health.Well aligned teeth are easier to keep clean and many patients will find their self esteem is enhanced by an attractive smile and dental appearance.It is important to appreciate that not all these benefits may be appropriate to every individual patient. These is also great variation in each individuals response to treatment and this can, on occasions, affect the final result.RiskAs with any form of treatment there are some risks associated with orthodontic treatment. While every effort is taken to minimize these risks, you, the patient, can help to minimize them by following treatment advice carefully and fully.1. Tooth decay and enamel damageTooth decay and enamel damage can occur if sugary or acid foods are eaten and tooth brushing is not maintained at a high standard. This damage can occur at any time but is more likely when fixed appliances are attached to the teeth.2. Root resorptionOrthodontic tooth movement involves light pressure being placed on the teeth and roots. In some patients changes such as root shortening may occur. The causes of this are not well understood and it is not always possible to identify susceptible patients in advance. In the majority of cases where this occurs there are so significant consequences.3. HeadgearIf not worn correctly, headgear may cause injury. It is imperative that the written instructions are necessary when using a headgear appliance.4. Joint discomfortSome individuals may experience jaw joint discomfort during orthodontic treatment. This is usually a transitory phase and indeed such symptoms also occur in patients who are not wearing orthodontic appliances.5. Posttreatment changesThroughout life the position of teeth alters regardless of orthodontic treatment.Some aspects of orthodontic treatment are particularly prone to posttreatment changes.Following fixed appliance treatment retainers will need to be worn. There are other changes, particularly the degree of crowding of the lower incisors, that may progressively alter throughout life.6. Medical historyGeneral medical problems may influence an individuals response to orthodontic treatment. It is important to inform your orthodontist of any changes in your medical health.Instructions for Patients Wearing Fixed AppliancesYou are now wearing a fixed appliance. You must take great care it. You must:1. Clean your teeth with a brush, immediately after every meal and before going to bed. If your teeth are not kept clean damage will occur.2. Avoid eating hard foods (such as crusty bread), and sticky food(such as toffee and nougat).3. Since it will be necessary to use a toothbrush after eating, most patients find it best to avoid snacks taken between main meals.4. Contact the orthodontist if the appliance hurts, becomes loose, or if any part however small is broken.5. Continue with your routine dental visits.Initially there will be some difficulty in eating and speaking but this will soon pass.You may experience some discomfort for a few hours following the placement of new archwires. This may be eased with a mild analgesicQuestion:1. The orthodontic treatment may have good effect on a person except (C)A. maintaining good oral healthB. improving a persons face appearanceC. ensuring every individual patient to have the same attractive smileD. making teeth easier to keep clean2. What would doctors advise on the procedure of orthodontic treatment? (B)A. Eat sugary or acid foods and maintain tooth brushing at a high standard.B. Conform the instructions when using a headgear appliance.C. Be scared by root resorption and joint discomfort.D. Wear retainers irregularly after fixed appliance treatment. 3. When will the tooth decay and enamel damage happen? (C)A. only when eaten too many sugary or acid foodsB. when tooth brushing maintained at a high standardC. the damage can occur at any time D. especially when flexible appliance are attached to the teeth4. What kind of food can you eat when you are now wearing a fixed appliance? (D)A. crusty bread B. toffee C. nougat D. orange 5. Which of the following statement in not true? (B)A. Clean your teeth immediately after you have a meal.B. You can repair it by yourself when the appliance is broken.C. You should avoid eating hard food.D. Contact your dentist if the appliance becomes loose.TEXT 2So far we have discussed mostly about the dental profession and society. Now we will look at dentistry as a possible profession for you.Can you answer yes to the five questions below? If so, you have passed a simple, but very important, test -a sort of entrance requirement for dental school.Are you skillful with your hands?Do you like to work with people?Is your health good?Does science interest you?Would six years of college be alright with you?Let us look at the first four questions right nowClever Hands. To even get into dental school, you must pass a test of manual dexterit. A dentist must use his hands skillfully in very small spaces, and use them with controlled strength and gentleness.If you are very good at precise, detailed work with your hands -and like such work - but cannot answer yes to the other questions.Working With People. Many people choose dentistry because they do not like to work for other people, but want to be their own boss. Working with people is, of course, something quite different.Dentists work with people under very difficult conditions every day. They need patience to put up with a patients needless worries. They need calm to match his anxiety. Dentists must also have sympathy - or at least a sympathetic manner - like a physicians bedside manner.Suppose you do not like taking all these pains with people. You could still enter dentistry if you chose a proper specialty. For instance, oral surgeons and oral pathologists have very little contact with patients. Dental teachers need to communicate with people, but in a much more relaxed way. If you are solitaryminded, you could be a research scientist.Good Health. Dentists stand on their feet a lot. They often work in awkward positions. They need a lot of stamina. Robust general health is a prime requirement for dentistry.Dentists need particularly good eyesight. This does not mean that you cannot wear glasses. With or without glasses, you have to identify some very small changes and very tiny structures in some corners that are difficult to see.The Scientific Mind. Do you like the science courses you have had in school? Do you enjoy the science columns and features in the news magazines?Good grades in all your subjects are important. They show that you have two qualities that you may get into dental field. Those qualities are intelligence and persistence.1. what would be the best title for the text? CA. A Test for College B. Features for College StudentsC. Is Dentistry for You D. The Benefits of Good Healthy and Skillfull Hands2. It is indicated in paragraph 2 that_. DA. the five questions are a test of every dental schoolB. if you say yes to the five questions you will be a dentist C. if you say yes to the five questions, you will get an entrance for a dental school that you wantD. the five questions are a simple ,but very important test for students who want to go to dental school3 dentists dont have to possess _ B A skillful hands B pass all the tests C good health D group spirit4 which one is wrong according to the text? A A I wear glasses so I cant be a dentist B dentistry is related to science C to be a dentist need intelligence and persistence D not all people is suitable to be a dentist5 The word “stamina” is closest in meaning to _. Bknowledge B endurance C characteristics D muscle翻译 The pulp. The pulp consists of loose connective tissue and carries the blood, lymphatic and nerve supply to the tooth. Where it meets the dentine ,the surface of the pulp is covered by a layer of odontoblasts. These are columnar cells with oval nuclei, and each cell has a process that lies within a corresponding tubule in the dentine. Immediately internal to the odontoblast layer there is a narrow cell-free zone.Dentine. Physically and chemically dentine is very similar to bone, consisting of 30 percent organic material. As in bone ,the organic fraction consists of collagen fibrils embedded in a mucopolysaccharide cementing substance, and the inorganic fraction consists mainly of calcium phosphates in the form of apatite crystals. Unlike bone ,however, dentine contains no cell bodies but only cell processes, those of the odontoblasts ,in the dentinal tubule .The dentinal tubules are 2to3 um diameter and each runs through the whole thickness of the dentine from the cell body of the odontoblast to the surface of The dentine. There are cross-communications between the tubules, containing anastomosing branches o