NDHCEBoardExamPrepQuestions
andAnswers.
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 - Correct Answer c. Pulp and periodontal ligaments
Free, unmyelinated nerve endings of the pulp can sense:
a...
NDHCE Board Exam Prep 2023-2024 Questions
and 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 - Correct Answer 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 - Correct 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 - Correct 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. - Correct 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 - Correct 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 - Correct 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 - Correct 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 - Correct Answer d. mesoderm
Enamel ______ forms the crystalline structural units of enamel?
a. Tubles
b. granules
c. rods
d. cuticles - Correct 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 - Correct 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 - Correct Answer 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 - Correct Answer 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. - Correct Answer e. all of the above
A. Gingiva contains circular fiber or circumferential fibers that envelop each tooth
separately within the free gingiva.
B. Attached gingiva is composed of orthokeratinized stratified squamous epithelium.
Epithelium is not vascularized and depends on the underlying connective tissue for
nourishment; the epithelium interfaces with underlying connective tissue to enhance this
nourishment. Epithelial extensions into connective tissue are called ridges or rete pegs.
This rete peg arrangement produces the clinical appearance of stippling.
C. The epithelium interfaces with underlying connective tissue to enhance nourishment.
Connective tissue papillae are the connective tissue extensions into overlying epithelium.
D. Fibroblasts are present in gingival connective tissue; they produce various types of
fibers and synthesize intercellular ground substance.
What type of epithelium comprises attached gingiva?
a. keratinized stratified squamous epithelium
b. nonkeratinized stratified squamous epithelium
c. keratinized simple squamous epithelium
d. Pseudostratified columnar epithelium
e. nonkeratinized simple squamous epithelium - Correct Answer a. keratinized stratified
squamous epithelium
a cleft lip occurs when the maxillary process fails to fuse with which one of the following
embryonic processes?
a. Palatine process
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