NDEB EXAM 2026/2027 NDEB SOLVED 300+
QUESTIONS AND CORRECT ANSWERS||GRADED A+
An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of
permanent maxillary and mandibular first molar and good alignment of the lower incisors. The
management of this patient should be to
A. refer for orthodontic consultation.
B. use a cervical headgear to reposition maxillary molars.
C. disk the distal surfaces of primary mandibular second molars.
D. place patient on appropriate recall schedule.
Answer: D.
A bitewing radiograph of an early mixed dentition should include the following proximal
surfaces.
A. Distal of the primary canine to distal of the permanent first molar.
B. Distal of the primary canine to mesial of the permanent first molar.
C. Mesial of the primary first molar to mesial of the permanent first molar.
D. Mesial of the primary first molar to distal of the permanent first molar.
Answer: A.
Procaine is a local anaesthetic which is chemically classified as an
A. amide.
B. ester.
C. aldehyde.
,D. ethamine.
E. aminide.
Answer: B.
An adult female patient presents to the dental office with fractured teeth, a lacerated lip and a
black eye. She is with her 6 year old son, who is crying and upset. The dentist's receptionist
discretely reports that the child was asking his mother "Why was Daddy hurting you?" Upon
questioning, the patient confides that her husband was the source of her injuries and indicates
that she would not be pursuing any action. She is referred to a specialist due to the complexity
of her dental injuries, but she requests that the source of her injuries not be disclosed. What
is the dentist's obligation?
A. Respect the patient's request regarding confidentiality.
B. Report her injuries to an adult protection agency.
C. Forward all information, including the source of the injuries, to the specialist.
D. Report the situation to a relevant child protection agency.
Answer: B.
Aspiration prior to a local anesthetic injection reduces the
A. toxicity of local anesthetic.
B. toxicity of vasoconstrictor.
C. possibility of intravascular administration.
D. possibility of paresthesia.
Answer: C.
,What is the most common intraoral location of squamous cell carcinoma?
A. Lateral tongue.
B. Buccal mucosa.
C. Tonsilar bed.
D. Attached gingiva.
Answer: A.
Which of the following are mechanisms of growth of the naso-maxillary complex?
A. Sutural.
B. Cartilaginous.
C. Appositional.
D. All of the above.
Answer: D.
An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of
permanent maxillary and mandibular first molars. The management of this patient should be to
A. plan serial extractions for more normal adjustment of the occlusion.
B. refer the patient to an orthodontist for consultation.
C. place a cervical headgear to reposition maxillary molars.
D. disk the distal surfaces of primary mandibular second molars to allow normal adjustment of
permanent molars.
E. observe.
Answer: E.
, While performing a bony tuberosity reduction, the maxillary sinus lining is accidently
perforated. The wound is to be closed with a suture that will resorb in 7-10 days. The suture
material that should be used is
A. polyethylene.
B. catgut.
C. chromic catgut.
D. polylactic acid.
Answer: C.
Which cells migrate into the gingival sulcus in the largest numbers in response to the
accumulation of plaque?
A. Plasma cells and monocytes.
B. Polymorphonuclear leukocytes.
C. Macrophages.
D. Lymphocytes.
E. Mast cells
Answer: B. Polymorphonuclear leukocytes.
In primary molars, radiographic bony changes from an infection are initially seen
A. at the apices.
B. in the furcation area.
C. at the alveolar crest.
D. at the base of the developing tooth.
Answer: B.
QUESTIONS AND CORRECT ANSWERS||GRADED A+
An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of
permanent maxillary and mandibular first molar and good alignment of the lower incisors. The
management of this patient should be to
A. refer for orthodontic consultation.
B. use a cervical headgear to reposition maxillary molars.
C. disk the distal surfaces of primary mandibular second molars.
D. place patient on appropriate recall schedule.
Answer: D.
A bitewing radiograph of an early mixed dentition should include the following proximal
surfaces.
A. Distal of the primary canine to distal of the permanent first molar.
B. Distal of the primary canine to mesial of the permanent first molar.
C. Mesial of the primary first molar to mesial of the permanent first molar.
D. Mesial of the primary first molar to distal of the permanent first molar.
Answer: A.
Procaine is a local anaesthetic which is chemically classified as an
A. amide.
B. ester.
C. aldehyde.
,D. ethamine.
E. aminide.
Answer: B.
An adult female patient presents to the dental office with fractured teeth, a lacerated lip and a
black eye. She is with her 6 year old son, who is crying and upset. The dentist's receptionist
discretely reports that the child was asking his mother "Why was Daddy hurting you?" Upon
questioning, the patient confides that her husband was the source of her injuries and indicates
that she would not be pursuing any action. She is referred to a specialist due to the complexity
of her dental injuries, but she requests that the source of her injuries not be disclosed. What
is the dentist's obligation?
A. Respect the patient's request regarding confidentiality.
B. Report her injuries to an adult protection agency.
C. Forward all information, including the source of the injuries, to the specialist.
D. Report the situation to a relevant child protection agency.
Answer: B.
Aspiration prior to a local anesthetic injection reduces the
A. toxicity of local anesthetic.
B. toxicity of vasoconstrictor.
C. possibility of intravascular administration.
D. possibility of paresthesia.
Answer: C.
,What is the most common intraoral location of squamous cell carcinoma?
A. Lateral tongue.
B. Buccal mucosa.
C. Tonsilar bed.
D. Attached gingiva.
Answer: A.
Which of the following are mechanisms of growth of the naso-maxillary complex?
A. Sutural.
B. Cartilaginous.
C. Appositional.
D. All of the above.
Answer: D.
An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of
permanent maxillary and mandibular first molars. The management of this patient should be to
A. plan serial extractions for more normal adjustment of the occlusion.
B. refer the patient to an orthodontist for consultation.
C. place a cervical headgear to reposition maxillary molars.
D. disk the distal surfaces of primary mandibular second molars to allow normal adjustment of
permanent molars.
E. observe.
Answer: E.
, While performing a bony tuberosity reduction, the maxillary sinus lining is accidently
perforated. The wound is to be closed with a suture that will resorb in 7-10 days. The suture
material that should be used is
A. polyethylene.
B. catgut.
C. chromic catgut.
D. polylactic acid.
Answer: C.
Which cells migrate into the gingival sulcus in the largest numbers in response to the
accumulation of plaque?
A. Plasma cells and monocytes.
B. Polymorphonuclear leukocytes.
C. Macrophages.
D. Lymphocytes.
E. Mast cells
Answer: B. Polymorphonuclear leukocytes.
In primary molars, radiographic bony changes from an infection are initially seen
A. at the apices.
B. in the furcation area.
C. at the alveolar crest.
D. at the base of the developing tooth.
Answer: B.
