NDHCB/NDHCE EXAM PREP QUESTIONS AND
ANSWERS 2026 STUDY GUIDE
◉ Free, unmyelinated nerve endings of the pulp can sense:
a. hot
b. cold
c. pressure
d. pain
e. all of above. Answer: 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
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. Answer: 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.. Answer: 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. Answer: 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. Answer: c. odontoblasts
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. Answer: 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. Answer: d. mesoderm
◉ Enamel ______ forms the crystalline structural units of enamel?
, a. Tubles
b. granules
c. rods
d. cuticles. Answer: 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
b. dentinal tubule
c. secondary dentin
d. predentin. Answer: 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. Answer: b. reduction in the quantity of
enamel matrix
ANSWERS 2026 STUDY GUIDE
◉ Free, unmyelinated nerve endings of the pulp can sense:
a. hot
b. cold
c. pressure
d. pain
e. all of above. Answer: 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
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. Answer: 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.. Answer: 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. Answer: 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. Answer: c. odontoblasts
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. Answer: 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. Answer: d. mesoderm
◉ Enamel ______ forms the crystalline structural units of enamel?
, a. Tubles
b. granules
c. rods
d. cuticles. Answer: 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
b. dentinal tubule
c. secondary dentin
d. predentin. Answer: 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. Answer: b. reduction in the quantity of
enamel matrix
