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NDAEB- MDA PREP CHAPTER QUESTIONS
Typology: Exams
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What surgical procedure describes a hemisection? - answer- removal of the root and crown by cutting through each lengthwise With regard to tissues most sensitive to radiation, which of the following is the correct order from most sensitive to least sensitive tissue? - answer- skin, oral mucosa, thyroid gland, nerve Which is the preferred method used to hold and transfer a bulky instrument such as the surgical forceps? - answer- palm grasp In addition to barrier technique, which of the following is an infection control measure concerning the wire connections from the sensor to the digital image unit? - answer- wiping down with an intermediate-level hospital-grade disinfectant Hand lotions with petroleum- or oil-based ingredients should not be used in a dental office because these products can: - answer- weaken the glove material, especially latex When should a full adult series of dental images be considered for a child or adolescent? - answer- when clinical evidence of generalized disease is present and the adolescent has first and second molars Which factor would not contribute to xerostomia in a patient? - answer- dietary intake Which of the following terms indicates the highest level of killing power? - answer- bacteriocidal agent When using a stepwedge to test developer strength, a total of ____________ films should be taken. - answer- 20Which Occupational Safety and Health Administration (OSHA) document required for the office contains a plan for postexposure evaluation and follow-up? - answer- Exposure Control Plan Which type of film is used in panoramic imaging? - answer- screen Which is the surgical procedure in which bone is added, reshaped, and contoured? - answer- osteoplasty How does static electricity appear on a developed film? - answer- black branching lines Which of the following rotary instruments would cut fastest and most efficiently? - answer- diamond stone
A posterior tooth with a deep preparation close to the pulp chamber may require a base that is designed to prepare pulpal defense by functioning as a(n): - answer- insulating base Why is a patient who is hyperventilating instructed to breathe into his or her cupped hands? - answer- to increase the carbon dioxide levels A reproduction of an individual tooth on which a wax pattern may be constructed for a cast crown is a(n) - answer- die You have a package of outdated dental film. How should you dispose of it? - answer- Contact an approved waste removal service. If the charting conditions indicate that there is a furcation involvement, a triangle containing the number that indicates the level of furcation would be placed: - answer- at the apical area between two or more rooth branches When densities differ by more than two steps on a stepwedge, which protocol should be followed? - answer- Replace the processing solutions If an administrative assistant chooses to transmit a transaction about a patient electronically, under which Act does this task fall? - answer- ADA The surgical removal of diseased gingival tissues is called: - answer- gingivectomy The surgical removal of the apex of an endodontically treated tooth is what procedure? - answer- apicoectomy A dental assistant must remove a used scalpel blade from a reusable handle. What is the appropriate procedure for removing the blade? - answer- Remove the blade with a hemostat. Which of the following represents the maximum permissible dose (MPD) for the general public? - answer- 0.1rem/yr An intermediate-level surface disinfectant would not kill which microbe? - answer- spores When adjusting a crown after cementation, the dentist most likely would use a(n) ______. - answer- stone In selecting a shade for a composite restoration, under which of the following conditions should the shade be selected? - answer- Keep the tooth moist and select the shade before tooth preparation.
Which is an unsafe practice in recapping of a needle? - answer- a two-handed scoop method for maximal control Which is the more fixed attachment of the muscle that is toward the midline of the body?
When taking a face-bow registration, which is the piece of equipment on which the patient closes his or her mouth? - answer- bite fork Which structure would not be seen as a maxillary landmark on a panoramic image? - answer- mental formen Essential organic substances that are needed to release energy from carbohydrates, fats, and proteins are: - answer- vitamins You have a new dental x-ray machine. The length of the PID is changing from 16 to 8 inches. How does this affect the intensity of the x-ray beam? What adjustment will you need to make to keep the density of your images consistent? - answer- he resultant beam will be four times as intense. You will need to decrease the exposure time. When a dental assistant is cleaning instruments, what type(s) of personal protective equipment should be worn? - answer- safety glasses, examination gloves, and protective gown Which of the following instruments would be used to transport a temporary restorative material to a cavity preparation? - answer- plastic instrument In relation to ergonomics, which class of motion involves the movement of fingers and wrist? - answer- class II Which of the following conditions is not a potential medical contraindication to nitrous oxide? - answer- age