NBDE PART II – 2025/2026 EXAM B QUESTIONS
WITH CORRECT ANSWERS
The Occupational Safety and Health Administration (OSHA) is concerned with
regulated waste within the office. The Environmental Protection Agency (EPA)
regulates the transportation of waste from the office.
A.Both statements are TRUE.
B.Both statements are FALSE.
C.The first statement is TRUE, the second is FALSE.
D. The first statement is FALSE, the second is TRUE. - CORRECT ANSWER -
A. Both statements are TRUE.
After the dentist has completed an etching procedure on a Class III composite
preparation, the preparation becomes contaminated with saliva. In response,
the dentist should do which of the following?
A.Blow away the saliva with air, then proceed
B.Rinse away the saliva with water, dry the preparation, then proceed
C.Wipe away the saliva with a cotton pellet, rinse the preparation with water,
dry it with air, then proceed
D. Rinse away the saliva with water, dry the preparation with air, then
repeat the etching procedure - CORRECT ANSWER -D. Rinse away the
saliva with water, dry the preparation with air, then repeat the etching
procedure
Which of the following eruption sequences is most commonly found in the
primary dentition?
A.Central incisor, lateral incisor, canine, first molar, and second molar
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
,B.Central incisor, lateral incisor, first molar, canine, and second molar
C.First molar, central incisor, lateral incisor, canine, and second molar
D. First molar, central incisor, lateral incisor, second molar, and canine -
CORRECT ANSWER -B.
Central incisor, lateral incisor, first molar, canine, and second molar
A size-30 root canal file is broken 1 mm short of the apex in the distofacial
canal of a maxillary second molar. The instrument can neither be removed
nor by-passed. The remaining pulp is vital. In this situation, the dentist
should complete the root canal treatment and
A.amputate the distofacial root.
B.perform an apicoectomy of the distofacial root.
C.perform an apicoectomy and a retrofill of the distofacial root.
D. place the patient on recall for further evaluation. - CORRECT ANSWER -
D. place the patient on recall for further evaluation.
For a complete denture balanced occlusion, the lingual cusps of maxillary
posterior teeth on the non-working side contacts which areas of the
mandibular posterior teeth?
A.The facial inclines of the lingual cusps
B.The lingual inclines of the lingual cusps
C.The lingual inclines of the facial cusps
D. The central fossae - CORRECT ANSWER -C. The lingual inclines of the
facial cusps
Thrombophlebitis, which occurs after intravenous administration of
diazepam, is usually attributed to which of the following substances in the
mixture?
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
, A.Benzoic acid
B.Ethyl alcohol
C.Propylene glycol
D. Sodium metabisulfite - CORRECT ANSWER -C. Propylene glycol
Although no causal relationships between particular bacteria and periodontal
diseases have been determined, there does appear to be an association
between localized juvenile periodontitis and the presence of
A.Actinobacillus actinomycetemcomitans.
B.Porphyromonas gingivalis.
C.Actinomyces viscosus.
D. Treponema denticola. - CORRECT ANSWER -A. Actinobacillus
actinomycetemcomitans.
When a patient opens his mouth, there is an audible click. Which of the
following represents the MOST plausible explanation?
A.The joint capsule has thickened.
B.The disk and condyle lack functional coordination.
C.The articular eminence has flattened.
D. The medial pterygoid muscle is in spasm. - CORRECT ANSWER -B. The
disk and condyle lack functional coordination.
Each of the following is a pharmacologic effect of phenothiazines EXCEPT
one. Which one is this EXCEPTION?
A.Sedation
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
WITH CORRECT ANSWERS
The Occupational Safety and Health Administration (OSHA) is concerned with
regulated waste within the office. The Environmental Protection Agency (EPA)
regulates the transportation of waste from the office.
A.Both statements are TRUE.
B.Both statements are FALSE.
C.The first statement is TRUE, the second is FALSE.
D. The first statement is FALSE, the second is TRUE. - CORRECT ANSWER -
A. Both statements are TRUE.
After the dentist has completed an etching procedure on a Class III composite
preparation, the preparation becomes contaminated with saliva. In response,
the dentist should do which of the following?
A.Blow away the saliva with air, then proceed
B.Rinse away the saliva with water, dry the preparation, then proceed
C.Wipe away the saliva with a cotton pellet, rinse the preparation with water,
dry it with air, then proceed
D. Rinse away the saliva with water, dry the preparation with air, then
repeat the etching procedure - CORRECT ANSWER -D. Rinse away the
saliva with water, dry the preparation with air, then repeat the etching
procedure
Which of the following eruption sequences is most commonly found in the
primary dentition?
A.Central incisor, lateral incisor, canine, first molar, and second molar
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
,B.Central incisor, lateral incisor, first molar, canine, and second molar
C.First molar, central incisor, lateral incisor, canine, and second molar
D. First molar, central incisor, lateral incisor, second molar, and canine -
CORRECT ANSWER -B.
Central incisor, lateral incisor, first molar, canine, and second molar
A size-30 root canal file is broken 1 mm short of the apex in the distofacial
canal of a maxillary second molar. The instrument can neither be removed
nor by-passed. The remaining pulp is vital. In this situation, the dentist
should complete the root canal treatment and
A.amputate the distofacial root.
B.perform an apicoectomy of the distofacial root.
C.perform an apicoectomy and a retrofill of the distofacial root.
D. place the patient on recall for further evaluation. - CORRECT ANSWER -
D. place the patient on recall for further evaluation.
For a complete denture balanced occlusion, the lingual cusps of maxillary
posterior teeth on the non-working side contacts which areas of the
mandibular posterior teeth?
A.The facial inclines of the lingual cusps
B.The lingual inclines of the lingual cusps
C.The lingual inclines of the facial cusps
D. The central fossae - CORRECT ANSWER -C. The lingual inclines of the
facial cusps
Thrombophlebitis, which occurs after intravenous administration of
diazepam, is usually attributed to which of the following substances in the
mixture?
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
, A.Benzoic acid
B.Ethyl alcohol
C.Propylene glycol
D. Sodium metabisulfite - CORRECT ANSWER -C. Propylene glycol
Although no causal relationships between particular bacteria and periodontal
diseases have been determined, there does appear to be an association
between localized juvenile periodontitis and the presence of
A.Actinobacillus actinomycetemcomitans.
B.Porphyromonas gingivalis.
C.Actinomyces viscosus.
D. Treponema denticola. - CORRECT ANSWER -A. Actinobacillus
actinomycetemcomitans.
When a patient opens his mouth, there is an audible click. Which of the
following represents the MOST plausible explanation?
A.The joint capsule has thickened.
B.The disk and condyle lack functional coordination.
C.The articular eminence has flattened.
D. The medial pterygoid muscle is in spasm. - CORRECT ANSWER -B. The
disk and condyle lack functional coordination.
Each of the following is a pharmacologic effect of phenothiazines EXCEPT
one. Which one is this EXCEPTION?
A.Sedation
NBDE PART II – 2025-2026 EXAM B QUESTIONS WITH CORRECT ANSWERS
