NDEB SOLVED QUESTIONS AND CORRECT ANSWERS

NDEB SOLVED QUESTIONS AND CORRECT ANSWERS 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. correct answer: B. improve marginal adaptation. Lichen planus occurs most frequently on the A. buccal mucosa. B. tongue. C. floor of the mouth. D. gingiva. correct answer: 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. correct answer: 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. correct answer: 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. correct answer: 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 liquid. C. increasing the rate of addition of the powder to the liquid. D. cooling the glass mixing slab. correct answer: D. cooling the glass mixing slab. What is the most likely diagnosis of a white lesion on the retromolar pad opposing a non-functional molar? A. Alveolar ridge keratosis. B. Candidiasis. C. Lichen planus. D. Squamous cell carcinoma correct answer: A. Alveolar ridge keratosis Which of the following is the most likely cause of osteoporosis, glaucoma, hypertension and peptic ulcers in a 65 year old with Crohn's disease? A. Uncontrolled diabetes. B. Systemic corticosteroid therapy. C. Chronic renal failure. D. Prolonged NSAID therapy. E. Malabsorption syndrome. correct answer: B. Systemic corticosteroid therapy. 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. correct answer: 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. correct answer: 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. correct answer: 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. correct answer: 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. correct answer: 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. correct answer: E. opening and closing axis of the mandible. Which of the following microorganisms are most frequently found in infected root canals? A. Streptococcus viridans. B. Staphylococcus aureus. C. Lactobacilli. D. Enterococci. E. Staphylococcus albus. correct answer: A. Streptococcus viridans. The predominant type of movement produced by a