NDHCE BOARD EXAM PREP
QUESTIONS AND CORRECT ANSWERS.
The tissue(s) that have nerve innervations are
a. Dentin
b. Pulp and dentin
c. Pulp and periodontal ligaments
d. Cementum
e. All of the above - ANS c. Pulp and periodontal ligaments
Free, unmyelinated nerve endings of the pulp can sense:
a. hot
b. cold
c. pressure
d. pain
e. all of above - ANS d. pain
The free unmyelinated nerve endings of the pulp tissue can sense pain only. It cannot
distinguish between hot or cold. It cannot distinguish the sensation of pressure. All stimuli are
interpreted as a pain perception. The encapsulated nerve endings are responsible for registering
pressure changes
nonsuccedaneous permanent molars develop from tooth buds that frow from
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,a. a successional dental lamina
b. primary tooth buds
c.the posterior part of the palatal shelves
d. extension of the primary second molar's dental lamina - ANS d. extension of the primary
second molar's dental lamina
Six permanent molars per dental arch develop from a posterior extension of the dental lamina
What is the angled part of the ameloblast that secretes the enamel matrix?
a. inner enamel epithelium
b. repolarized pre ameloblasts
c. tomes process
d. disintegrating basement membrane. - ANS c. tomes process
The pink labial mucosa or buccal mucosa meets the redder______ at the mucobucccal fold
a. marginal gingiva
b. attached gingiva
c. alveolar mucosa - ANS c. alveolar mucosa
The pink labial mucosa or buccal mucosa meets the redder alveolar mucosa at the mucobuccal
fold deep with the vestibular fornix.
The outer cells of the dental papilla are induced to differentiate during tooth development
a. pulp tissue
b. preameloblasts
c. odontoblasts
d. cementoblasts - ANS c. odontoblasts
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,Outer cells differentiate into dentin-secreting cells, odontoblasts
Which stage of tooth formation occurs for the primary dentition during the eleventh and
twelfth week of prenatal development?
a. bell stage
b. initiation stage
c. cap stage
d. bud stage - ANS a. bell stage
The eleventh and twelfth week of prenatal development is the fourth stage of
Odontogenesis the Bell Stage
What is the connective tissue derived from during prenatal development?
a. ectoderm
b. endoderm
c. neural crest cells
d. mesoderm - ANS d. mesoderm
Enamel ______ forms the crystalline structural units of enamel?
a. Tubles
b. granules
c. rods
d. cuticles - ANS c. rods
The patient's mother was informed that multiple carious lesion caries on her maxillary molars
had progressed into the dentin. Caries in the dentin of the tooth progresses through the
a. interglobular dentin
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, b. dentinal tubule
c. secondary dentin
d. predentin - ANS b. dentinal tubule
Bacteria smaller than dentinal tubules enter the tubules and destroy the odontoblastic
processes (dentinal fibers) and follow the course to pulp.
Enamel hypocalcification is a type of enamel dysplasia that involves:
a. an increased number of ameloblasts
b. reduction in the quantity of enamel matrix
c. grooves and pitting on the enamel surface
d. interference in the metabolic - ANS b. reduction in the quantity of enamel matrix
During 4th week of embryonic life, the tongue develops from several swellings arising on the
internal aspects of the brachial arches 1-4. Which swelling from the body of the tongue.
a. Branchial arch 1
b. branchial arches 2, 3 and part of 4
c. branchial arches 4
d. thyroid gland - ANS A. Branchial arch 1 forms two lateral swellings and one medial swelling
(tuberculum impar) to form the body of the tongue
What histologic structures comprise healthy attached gingiva
a. circular fibers
b. rete pegs
c. connective tissue papilla
d. fibroblasts
e. all of the above. - ANS e. all of the above
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QUESTIONS AND CORRECT ANSWERS.
The tissue(s) that have nerve innervations are
a. Dentin
b. Pulp and dentin
c. Pulp and periodontal ligaments
d. Cementum
e. All of the above - ANS c. Pulp and periodontal ligaments
Free, unmyelinated nerve endings of the pulp can sense:
a. hot
b. cold
c. pressure
d. pain
e. all of above - ANS d. pain
The free unmyelinated nerve endings of the pulp tissue can sense pain only. It cannot
distinguish between hot or cold. It cannot distinguish the sensation of pressure. All stimuli are
interpreted as a pain perception. The encapsulated nerve endings are responsible for registering
pressure changes
nonsuccedaneous permanent molars develop from tooth buds that frow from
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,a. a successional dental lamina
b. primary tooth buds
c.the posterior part of the palatal shelves
d. extension of the primary second molar's dental lamina - ANS d. extension of the primary
second molar's dental lamina
Six permanent molars per dental arch develop from a posterior extension of the dental lamina
What is the angled part of the ameloblast that secretes the enamel matrix?
a. inner enamel epithelium
b. repolarized pre ameloblasts
c. tomes process
d. disintegrating basement membrane. - ANS c. tomes process
The pink labial mucosa or buccal mucosa meets the redder______ at the mucobucccal fold
a. marginal gingiva
b. attached gingiva
c. alveolar mucosa - ANS c. alveolar mucosa
The pink labial mucosa or buccal mucosa meets the redder alveolar mucosa at the mucobuccal
fold deep with the vestibular fornix.
The outer cells of the dental papilla are induced to differentiate during tooth development
a. pulp tissue
b. preameloblasts
c. odontoblasts
d. cementoblasts - ANS c. odontoblasts
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Outer cells differentiate into dentin-secreting cells, odontoblasts
Which stage of tooth formation occurs for the primary dentition during the eleventh and
twelfth week of prenatal development?
a. bell stage
b. initiation stage
c. cap stage
d. bud stage - ANS a. bell stage
The eleventh and twelfth week of prenatal development is the fourth stage of
Odontogenesis the Bell Stage
What is the connective tissue derived from during prenatal development?
a. ectoderm
b. endoderm
c. neural crest cells
d. mesoderm - ANS d. mesoderm
Enamel ______ forms the crystalline structural units of enamel?
a. Tubles
b. granules
c. rods
d. cuticles - ANS c. rods
The patient's mother was informed that multiple carious lesion caries on her maxillary molars
had progressed into the dentin. Caries in the dentin of the tooth progresses through the
a. interglobular dentin
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, b. dentinal tubule
c. secondary dentin
d. predentin - ANS b. dentinal tubule
Bacteria smaller than dentinal tubules enter the tubules and destroy the odontoblastic
processes (dentinal fibers) and follow the course to pulp.
Enamel hypocalcification is a type of enamel dysplasia that involves:
a. an increased number of ameloblasts
b. reduction in the quantity of enamel matrix
c. grooves and pitting on the enamel surface
d. interference in the metabolic - ANS b. reduction in the quantity of enamel matrix
During 4th week of embryonic life, the tongue develops from several swellings arising on the
internal aspects of the brachial arches 1-4. Which swelling from the body of the tongue.
a. Branchial arch 1
b. branchial arches 2, 3 and part of 4
c. branchial arches 4
d. thyroid gland - ANS A. Branchial arch 1 forms two lateral swellings and one medial swelling
(tuberculum impar) to form the body of the tongue
What histologic structures comprise healthy attached gingiva
a. circular fibers
b. rete pegs
c. connective tissue papilla
d. fibroblasts
e. all of the above. - ANS e. all of the above
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