NDEB EXAM 900 QUESTIONS CORRECT

NDEB EXAM 900+ QUESTIONS & CORRECT

ANSWERS LATEST 2025

The principal reason for a cavosurface bevel on an inlay preparation is to

• remove undermined enamel.
• improve marginal adaptation.
• decrease marginal percolation.
• increase resistance and retention forms. - ANSWER-B. improve marginal

adaptation.

Lichen planus occurs most frequently on the

• buccal mucosa.
• tongue.
• floor of the mouth.
• gingiva. - 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

• maxillary first premolar.
• maxillary second premolar.
• mandibular second premolar.
• mandibular first premolar. - ANSWER-D. mandibular first premolar. 1 / 4

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

• reduce the retromolar pads surgically to

provide the necessary clearance.

• reduce the tuberosities surgically to provide the

necessary clearance.

• construct new dentures at an increased occlusal

vertical dimension to gain the necessary clearance.

• proceed with construction of the denture and

reduce the posterior extension of the mandibular denture to eliminate interferences. - 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?

• Saliva.
• Milk.
• Saline.
• Tap water. - ANSWER-B. Milk.
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The setting of a zinc-phosphate cement can best be retarded by

• decreasing the particle size.
• increasing the concentration of water in the

liquid.

• increasing the rate of addition of the powder to

the liquid.

• cooling the glass mixing slab. - 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?

• Alveolar ridge keratosis.
• Candidiasis.
• Lichen planus.
• Squamous cell carcinoma - 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?

• Uncontrolled diabetes.
• Systemic corticosteroid therapy.
• Chronic renal failure.
• Prolonged NSAID therapy.
• Malabsorption syndrome. - ANSWER-B. Systemic corticosteroid therapy. 3 / 4

A hinge axis facebow records

• Bennett angle.
• centric relation.
• lateral condylar inclination.
• horizontal condylar inclination.
• opening and closing axis of the mandible. - ANSWER-E. opening and closing

axis of the mandible.

The most important objective of occlusal adjustment of a natural dentition is to

• prevent temporomandibular joint syndrome.
• increase the shearing action in mastication.
• improve oral hygiene by preventing food

impaction.

• achieve a more favorable direction and

distribution of forces of occlusion. - ANSWER-D. achieve a more favorable direction and distribution of forces of occlusion.

Which condition has NOT been associated with Candida albicans infection?

• Median rhomboid glossitis.
• Angular cheilitis.
• Denture stomatitis.
• Aphthous ulcerations.
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