Exam (elaborations)

Exam (elaborations) NDEB RELEASED QUSTION BANK 2021 GRDED A (UPDATED 100% CORRECT ANSWERS)

Name: Exam (elaborations) NDEB RELEASED QUSTION BANK 2021 GRDED A (UPDATED 100% CORRECT ANSWERS)
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NDEB RELEASED QUSTION BANK 2021 GRDED A

Institution
Harvard University

Exam (elaborations) NDEB RELEASED QUSTION BANK 2021 GRDED A (UPDATED 100% CORRECT ANSWERS) A patient experiences pain and some gingival swelling in the anterior segment of the mandible. The mandibular lateral incisor has a shallow restoration, is tender to percussion and gives a positive response...

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Uploaded on November 7, 2021
File latest updated on August 1, 2023
Number of pages 451
Written in 2021/2022
Type Exam (elaborations)
Contains Questions & answers

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ndeb released qustion bank
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1 COPYRIGHT NOTICE All rights and interests (including copyright) in the (attached/below) released questions are owned by the National Dental Examining Board of Canada ("NDEB"). Exact reproduction of these questions will be permitted only on the specific terms set by NDEB. Any editing or manipulation of these questions is strictly prohibited. NDEB strictly prohibits the addition of answers, suggested answers, commentary, or any other ad ditional material to these released questions. NDEB also strictly prohibits the sale of these released questions, and the distribution or sale of any material purporting to provide the answers to the released questions. Please contact NDEB for permission p rior to any reproduction of the released questions. Disclaimer: Beginning in 2009, the NDEB of Canada is making available this Released Test Item Bank. The Released Test Item Bank includes both retired and active test items that have been utilized sinc e 1994 on previous examinations. The Released Test Item Bank includes test items in both English and French. Please note that the proportion of test item categories within the Written Examination Blueprint is not necessarily representative of the Released Test Item Bank. Furthermore, the content of the released test items is not necessarily representative of any given form of past written examinations. Please also be aware that some of the items in the Released Te st Item Bank may have been discontinued due to outdated science, grammar and content errors. All released test items are the property of the NDEB and are copyrighted. Which of the following is LEAST likely to cause pain? Carious pulp exposure. Chronic hyperplastic pulpitis (pulp polyp ). Acute pulpitis. Apical periodontitis. A patient experiences pain and some gingival swelling in the anterior segment of the mandible. The mandibular lateral incisor has a shallow restoration, is tender to percussion and gives a positive response to the electric pulp tester. There is some mobility. The most likely diagnosis is acute apical abscess. acute serous pulpitis. lateral periodontal abscess . acute suppurative pulpitis. chronic ulcerative pulpitis. Which one of the following statements is true as defined in endodontics? Overfilling refers to the incomplete filling of the canal system with a surplus of material extruding beyond the apical foramen. Underfilling refers to the complete filling of the canal space, but leaving voids in the pulp chamber for possible recontamination or infection. Overextension refers to the extrusion of filling material through an accessory canal. Underextension refers to the vertical extent of the filling material regardless of its completeness of obturation . All of the above. 2 After completion of endodontic chemomechanical debridement you can expect to have removed all tissue from the entire root canal system. machined the canals to a microscopically smooth channel. caused some temporary inflammation. sterilized the root canal. left some areas of the root canal system incompletely cleaned. A. (1) (2) (3) B. (1) and (3) C. (2) and (4) (4) only All of the above. Which of the following methods of instrument sterilization uses the lowest temperature? Steam autoclave. Dry heat oven. Ethylene oxide method . Glass bead sterilizer. Alcohol autoclave. When root canals are treated topically with antibiotics rather than with disinfectants a greater success rate results. the same rules of mechanical preparation and filling must be observed. treatment may be completed in fewer appointments. there is greater assurance that all micro - organisms are destroyed. there is a danger of sensitizing patients to antibiotics. A. (1) (3) (4) B. (2) (4) (5) C. (1) (2) (3) D. (2) and (5) E. All of the above. The antibiotic of choice for infections of pulpal origin is penicillin V. lincomycin. erythromycin. tetracycline. Endodontic therapy is CONTRAINDICATED in teeth with inadequate periodontal support . pulp stones. constricted root canals. accessory canals. curved roots. Periapical surgery is CONTRAINDICATED for a tooth that has a large periapical rarefaction. fistula related to a periapical lesion. vertical root fracture . fracture of the root apex and a necrotic pulp. a post and core retained crown. A patient telephones and tells you he has just knocked out his front tooth but that it is still intact. Your instructions should be to put the tooth in water and come to your office at the end of the day. wrap the tooth in tissue and come to your office in a week's time. put the tooth in alcohol and come to your office immediately. place tooth under the tongue and come to your office immediately. place the tooth in milk and come to your office immediately . 3 The placement of a retentive pin in the proximal regions of posterior teeth would MOST likely result in periodontal ligament perforation in the mesial of a mandibular first premolar. distal of a mandibular first premolar. distal of a mandibular first molar. mesial of a mandibular first molar . For a cast gold restoration, a gingival bevel is used instead of a shoulder because a bevel protects the enamel. increases retention. improves marginal adaptation. increases the thickness of gold. A. (1) (2) (3) B. (1) and (3) C. (2) and (4) (4) only All of the above. In permanent teeth, two pulp canals are most commonly found in the distobuccal root of maxillary molars. distal root of mandibular first molars. palatal root of maxillary first premolars. mesial root of mandibular first molars . The lamina dura is spongy bone. cribriform plate . hypercalcified bone. compact bone. Firm contact between approximating teeth is important because it locates the marginal ridges of each tooth. keeps the teeth from having any movement during function. insures proper cusp form and increases masticatory efficiency. stabilizes the dental arches and gives protection to the gingival papillae . In determining the ideal proximal outline form for a Class II amalgam cavity preparation in a molar the axial wall should be 1.5mm deep. gingival cavosurface margin must clear contact with the adjacent tooth. proximal walls diverge occlusally. facial and lingual proximal cavosurface margins must just clear contact with the adjacent tooth. A. (1) (2) (3) B. (1) and (3) C. (2) and (4) (4) only All of the above. A rubber dam should be used in pulp capping procedures. amalgam placement. composite placement. removing carious dentin from deep lesions. all of the above . 4 The air-water spray used as a coolant in high speed cutting of a cavity will decrease pulp damage. reduce frictional heat. keep the operating site clean. reduce clogging of cutting instruments. A. (1) (2) (3) B. (1) and (3) C. (2) and (4) (4) only All of the above . Which of the following may affect the results of electric pulp testing? Emotional factors. Pain threshold. Analgesics. Recent trauma. All of the above . Which of the following statements is/are true? Radiographs cannot differentiate between infected and non -infected periapical lesions. A definitive diagnosis of an apical lesion cannot be made on radiography alone. Periapical radiolucencies are not always indicative of loss of pulp vitality. A periapical radiograph can be used to locate the buccal bone level. A. (1) (2) (3) B. (1) and (3) C. (2) and (4) (4) only All of the above. A positive and prolonged reaction to a heat stimulus indicates that the pulp is necrotic. in an early hyperemic state. normal. irreversibly damaged . Which of the following is/are associated with the presence of microorganisms in the bloodstream? Anachoresis. Cavernous sinus thrombosis. Bacteremia. All of the above . Which of the following is/are true regarding a tooth filled with a formaldehyde -containing paste? Formaldehyde -containing pastes remain non-approved. The drug manufacturer may be liable, along with the dentist. Formaldehyde -containing pastes have a high antigenic potential. There are cases on record of parasthesia following overextrusion of such a paste in the vicinity of the mandibular nerve. All of the above . The desired termination point of apical root canal preparation when performing endodontic treatment on a vital tooth is 0.5 to 1mm short of the radiographic apex . 3mm short of the radiographic apex. slightly through the apical foramen. to the point where the patient feels sensation.

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