Download 2019 NDEB_Solved Qs&As New Review Update 2024 A+ and more Exams Nursing in PDF only on Docsity!
2019 NDEB_Solved Qs&As New Review Update 2024 A+
The principal reason for a cavosurface bevel on an inlay preparation is to A. remove undermined enamel. B. improve marginal adaptation. C. decrease marginal percolation. D. increase resistance and retention forms. - ANS-B. improve marginal adaptation. Lichen planus occurs most frequently on the A. buccal mucosa. B. tongue. C. floor of the mouth. D. gingiva. - ANS-A. buccal mucosa. The pulpal floor of a Class II cavity is cut perpendicular to the long axis of the tooth EXCEPT in the A. maxillary first premolar. B. maxillary second premolar. C. mandibular second premolar. D. mandibular first premolar. - ANS-D. mandibular first premolar. Upon examination of an edentulous patient, it is observed that the tuberosities contact the retromolar pads at the correct occlusal vertical dimension. The
treatment of choice is to A. reduce the retromolar pads surgically to provide the necessary clearance. B. reduce the tuberosities surgically to provide the necessary clearance. C. construct new dentures at an increased occlusal vertical dimension to gain the necessary clearance. D. proceed with construction of the denture and reduce the posterior extension of the mandibular denture to eliminate interferences. - ANS-B. reduce the tuberosities surgically to provide the necessary clearance. In the absence of "Hanks balanced salt solution", what is the most appropriate media to transport an avulsed tooth? A. Saliva. B. Milk. C. Saline. D. Tap water. - ANS-B. Milk. The setting of a zinc-phosphate cement can best be retarded by A. decreasing the particle size. B. increasing the concentration of water in the
C. lateral condylar inclination. D. horizontal condylar inclination. E. opening and closing axis of the mandible. - ANS-E. opening and closing axis of the mandible. The most important objective of occlusal adjustment of a natural dentition is to A. prevent temporomandibular joint syndrome. B. increase the shearing action in mastication. C. improve oral hygiene by preventing food impaction. D. achieve a more favorable direction and distribution of forces of occlusion. - ANS-D. achieve a more favorable direction and distribution of forces of occlusion. Which condition has NOT been associated with Candida albicans infection? A. Median rhomboid glossitis. B. Angular cheilitis. C. Denture stomatitis. D. Aphthous ulcerations. E. Oral hairy leukoplakia. - ANS-D. Aphthous ulcerations. Which of the following is essential for successful periodontal treatment? A. Scaling.
B. Final evaluation and maintenance on a oneyear recall. C. Periodontal flap surgery. D. Elimination of local etiologic factors. - ANS-D. Elimination of local etiologic factors. If a complete mandibular denture causes a burning sensation in the premolar region, this is due to the denture exerting pressure in/on the A. fibres of the buccinator muscle. B. lingual branch of the mandibular division of the trigeminal nerve. C. underlying bone. D. mental branch of the inferior alveolar nerve. E. buccal frenum area. - ANS-D. mental branch of the inferior alveolar nerve. A hinge axis facebow records A. Bennett angle. B. centric relation. C. lateral condylar inclination. D. horizontal condylar inclination. E. opening and closing axis of the mandible. - ANS-E. opening and closing axis of the mandible. Which of the following microorganisms are most frequently found in infected root canals? A. Streptococcus viridans.
D. visual inspection - ANS-C. probing with a fine instrument. Endotoxin is A. a cell wall component of gram-negative bacteria. B. a potent inflammatory agent. C. present in diseased root cementum. D. All of the above. - ANS-D. All of the above. In inhalation analgesia, what is the safe maximal nitrous oxide concentration that can be delivered? A. 50%. B. 60%. C. 70%. D. 80%. - ANS-C. 70%. The bond between porcelain and metal in a ceramometal (porcelain bonded to metal) crown is A. chemical. B. mechanical. C. equally chemical and mechanical. D. neither chemical nor mechanical. - ANS-A. chemical. The predominant immunoglobulin isolated from saliva is
A. IgG. B. IgM. C. IgA. D. IgD. - ANS-C. IgA. Soft tissue pockets CANNOT be reduced by A. occlusal adjustment. B. scaling and root planing (debridement). C. open flap curettage. D. guided tissue regeneration - ANS-A. occlusal adjustment. Roots of the permanent maxillary central incisors are completed by what age? A. 8 years. B. 10 years. C. 12 years. D. Later than 12 years. - ANS-B. 10 years. When designing a removable partial denture, changing the tilt of the cast on the surveyor alters the A. path of insertion of the planned removable partial denture. B. the position of the survey line on the cast. C. the undercut and non-undercut areas. D. the direction of forces applied to the partial
A. survey line. B. terminal line. C. axis of rotation/fulcrum line. D. line of greatest torque. - ANS-C. axis of rotation/fulcrum line. Intraoral soft tissue examination will NOT assist in the diagnosis of A. lichen planus. B. sinusitis. C. erythema multiforme. D. anemia. E. vitamin deficiencies - ANS-B. sinusitis. An anxious 67 year old patient presents for consultation to extract tooth 4.6. The medical history includes a heart murmur, hypertension and a cerebrovascular accident 5 years ago. Medications include clopidrogel, hydrochlorothiazide and rosuvastatin. What is the most appropriate preoperative management? A. Prescribing antibiotic prophylaxis. B. Ordering an INR test within 24 hours prior to procedure. C. Discussing with the patient the use of sedation. D. Requesting a complete blood count. - ANS-C. Discussing with the patient the use of sedation.
Which of the following improves the prognosis of pulp vitality after indirect pulp capping? A. Use of calcium hydroxide. B. Having a well sealed restoration. C. Reducing other traumas to the pulp. D. Removing all demineralized dentin. - ANS-B. Having a well sealed restoration. In clinical dentistry, stiffness of wire is a function of A. length of the wire segment. B. diameter of the wire segment. C. alloy composition. D. All of the above. E. None of the above. - ANS-D. All of the above. An 8 year old patient has a permanent central incisor with a necrotic pulp and a wide open apex. The most appropriate management is to perform a/an A. pulpotomy. B. apexification. C. regenerative endodontics. D. root canal therapy. - ANS-B. apexification. Hyperplastic lingual tonsils may resemble which of the following?
C. buccal vestibule. D. buccal space. - ANS-A. submandibular space. Which of the following require prophylactic antibiotics prior to dental procedures causing a bacteremia? A. Implanted cardiac pacemakers. B. Prosthetic cardiac valves. C. Coronary artery bypass grafts. D. Cardiac stents one year after placement. - ANS-B. Prosthetic cardiac valves. Which of the following is/are NOT usually affected by hereditary ectodermal dysplasia? A. Salivary glands. B. Teeth. C. Sweat glands. D. Hair. E. Fingernails. - ANS-A. Salivary glands. A bite-wing radiograph of tooth 1.4 reveals caries penetrating one third into the mesial enamel. The most appropriate management of tooth 1.4 is to A. place an amalgam restoration. B. place a porcelain inlay. C. place a direct composite restoration.
D. apply fluoride and improve oral hygiene. - ANS-D. apply fluoride and improve oral hygiene. The smear layer created by root canal instrumentation can be removed by A. hydrogen peroxide and ethyl chloride. B. sodium hypochlorite and EDTA. C. chlorhexidine and chloroform. D. calcium hydroxide and pheno - ANS-B. sodium hypochlorite and EDTA. Desquamation of the gingiva usually occurs as a result of A. inflammation. B. benign neoplasia. C. normal cell turnover. D. a developmental abnormality. - ANS-C. normal cell turnover. Abrasion is most commonly seen on the A. lingual surface of posterior teeth. B. occlusal surface of posterior teeth. C. incisal edges. D. facial surfaces of teeth. - ANS-D. facial surfaces of teeth. The most appropriate management of an avulsed maxillary central incisor in a 10 year old is the placement of a
A. remove both and suture. B. leave both and stabilize, if possible. C. remove both, fill the defect with Gelfoam and suture. D. reflect the mucoperiosteum, remove the tooth, leaving the tuberosity in place and suture. - ANS-B. leave both and stabilize, if possible. An adult patient has several multilocular lesions associated with vital mandibular teeth. A histopathologic analysis reveals the presence of multinucleated giant cells. The most appropriate management for this patient is to A. extract the involved teeth. B. obtain a serum parathormone (PTH) level. C. commence antibiotic therapy. D. initiate endodontic treatments. E. perform a mandibular resection - ANS-B. obtain a serum parathormone (PTH) level. If a tooth has an inadequate ferrule, which of the following is an effective strategy to increase tooth structure available for crown preparation? A. Cementation of the restoration with a glass ionomer cement. B. Sub-gingival preparation and prolonged temporization.
C. Orthodontic eruption. D. Elective endodontic treatment and a post core. - ANS-C. Orthodontic eruption. The tissue which is most sensitive to radiation is A. nerve. B. dental pulp. C. lymphoid. D. muscle. - ANS-C. lymphoid. Methemoglobinemia is a potential complication of an excessive dose of A. bupivacaine. B. lidocaine. C. mepivacaine. D. prilocaine. - ANS-D. prilocaine. The level of streptococcus mutans has been shown to be significantly higher in the bacterial plaque adjacent to which type of posterior restoration? A. Glass-ionomer. B. Composite resin. C. Amalgam. D. Gold castings. - ANS-B. Composite resin. Maxillary skeletal arch expansion
In the pterygomandibular space, the inferior alveolar nerve passes A. anterior to the deep tendon of the temporal muscle. B. lateral to the sphenomandibular ligament. C. medial to the medial pterygoid muscle. D. medial to the pterygomandibular raphe. - ANS-B. lateral to the sphenomandibular ligament. Upon stimulation of salivary flow, which gland is the main source of salivary volume? A. Submandibular. B. Submaxillary. C. Sublingual. D. Parotid. - ANS-D. Parotid. The gingivectomy is a useful technique to eliminate A. infrabony pockets. B. suprabony pockets. C. thick osseous ledges. D. mucogingival problems - ANS-B. suprabony pockets. Following periodontal surgery, the curetted root surface is repopulated by cells derived from all of the following tissues EXCEPT A. periodontal ligament.
B. cementum. C. alveolar bone. D. epithelium. E. gingival connective tissue - ANS-B. cementum. Periapical osseous dysplasia (periapical cementoosseous dysplasia) A. is associated with a vital tooth. B. is found mainly in children. C. has an orange peel radiographic pattern. - ANS-C. has an orange peel radiographic pattern. Which of the following drugs can be administered to manage pain following the acute onset of a migraine? A. Amitriptyline. B. Nifedipine. C. Propranolol. D. Sumatriptan. - ANS-D. Sumatriptan. With excessive forward mandibular growth in a patient with minimal overjet, the mandibular incisors will most likely A. tip labially. B. tip lingually. C. tip laterally.
