NDEB CERTIFICATION COMPREHENSIVE
TEST QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ What is the most appropriate media to transport an avulsed tooth in
the absence of Hanks balanced salt solution?
Answer: Milk.
⩥ What is the actual space loss in the maxilla for a 7-year-old patient
missing tooth 5.5 and tooth 7.5?
Answer: 2mm in the maxilla.
⩥ How can the setting of a zinc-phosphate cement be best retarded?
Answer: By cooling the glass mixing slab.
⩥ What is the most likely diagnosis of a white lesion on the retromolar
pad opposing a non-functional molar?
Answer: Alveolar ridge keratosis
⩥ What is the treatment of choice if tuberosities contact the retromolar
pads at the correct occlusal vertical dimension?
Answer: Proceed with construction of the denture and reduce the
posterior extension of the mandibular denture to eliminate interferences.
,⩥ What does a hinge axis facebow record?
Answer: Opening and closing axis of the mandible.
⩥ What is the most important objective of occlusal adjustment of a
natural dentition?
Answer: Achieve a more favorable direction and distribution of forces of
occlusion.
⩥ Which of the following is essential for successful periodontal
treatment?
Answer: Elimination of local etiologic factors.
⩥ What type of movement is produced by a finger spring on a
removable appliance?
Answer: Tipping.
⩥ Which condition has NOT been associated with Candida albicans
infection?
Answer: Aphthous ulcers
⩥ Which microorganisms are most frequently found in infected root
canals?
Answer: Enterococci
,⩥ In which emergency should epinephrine be administered
immediately?
Answer: Severe anaphylaxis.
⩥ What is endotoxin?
Answer: A cell wall component of gram-negative bacteria, a potent
inflammatory agent, present on the root cementum
⩥ What type of bond exists between porcelain and metal in a
ceramometal crown?
Answer: Equally chemical and mechanical
⩥ Which treatment cannot reduce soft tissue pockets?
Answer: Occlusal adjustment.
⩥ What does changing the tilt of the cast on the surveyor alter when
designing a removable partial denture?
Answer: The path of insertion of the planned removable partial denture.
⩥ What happens to needle deflection as the depth of injection increases?
Answer: Needle deflection increases.
, ⩥ How is the location and extent of subgingival calculus most
accurately determined?
Answer: Probing with a fine instrument.
⩥ What is the safe maximal nitrous oxide concentration that can be
delivered in inhalation analgesia?
Answer: 50%.
⩥ What is the predominant immunoglobulin isolated from saliva?
Answer: IgA.
⩥ By what age are the roots of the permanent maxillary central incisors
completed?
Answer: 10 years.
⩥ What is the characteristic facial type with increased overjet, moderate
facial convexity, and a deep labio-mental sulcus?
Answer: Prognathic.
⩥ What is the line drawn through the occlusal rests of two principal
abutments called?
Answer: Survey line.
TEST QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ What is the most appropriate media to transport an avulsed tooth in
the absence of Hanks balanced salt solution?
Answer: Milk.
⩥ What is the actual space loss in the maxilla for a 7-year-old patient
missing tooth 5.5 and tooth 7.5?
Answer: 2mm in the maxilla.
⩥ How can the setting of a zinc-phosphate cement be best retarded?
Answer: By cooling the glass mixing slab.
⩥ What is the most likely diagnosis of a white lesion on the retromolar
pad opposing a non-functional molar?
Answer: Alveolar ridge keratosis
⩥ What is the treatment of choice if tuberosities contact the retromolar
pads at the correct occlusal vertical dimension?
Answer: Proceed with construction of the denture and reduce the
posterior extension of the mandibular denture to eliminate interferences.
,⩥ What does a hinge axis facebow record?
Answer: Opening and closing axis of the mandible.
⩥ What is the most important objective of occlusal adjustment of a
natural dentition?
Answer: Achieve a more favorable direction and distribution of forces of
occlusion.
⩥ Which of the following is essential for successful periodontal
treatment?
Answer: Elimination of local etiologic factors.
⩥ What type of movement is produced by a finger spring on a
removable appliance?
Answer: Tipping.
⩥ Which condition has NOT been associated with Candida albicans
infection?
Answer: Aphthous ulcers
⩥ Which microorganisms are most frequently found in infected root
canals?
Answer: Enterococci
,⩥ In which emergency should epinephrine be administered
immediately?
Answer: Severe anaphylaxis.
⩥ What is endotoxin?
Answer: A cell wall component of gram-negative bacteria, a potent
inflammatory agent, present on the root cementum
⩥ What type of bond exists between porcelain and metal in a
ceramometal crown?
Answer: Equally chemical and mechanical
⩥ Which treatment cannot reduce soft tissue pockets?
Answer: Occlusal adjustment.
⩥ What does changing the tilt of the cast on the surveyor alter when
designing a removable partial denture?
Answer: The path of insertion of the planned removable partial denture.
⩥ What happens to needle deflection as the depth of injection increases?
Answer: Needle deflection increases.
, ⩥ How is the location and extent of subgingival calculus most
accurately determined?
Answer: Probing with a fine instrument.
⩥ What is the safe maximal nitrous oxide concentration that can be
delivered in inhalation analgesia?
Answer: 50%.
⩥ What is the predominant immunoglobulin isolated from saliva?
Answer: IgA.
⩥ By what age are the roots of the permanent maxillary central incisors
completed?
Answer: 10 years.
⩥ What is the characteristic facial type with increased overjet, moderate
facial convexity, and a deep labio-mental sulcus?
Answer: Prognathic.
⩥ What is the line drawn through the occlusal rests of two principal
abutments called?
Answer: Survey line.
