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NBDHE 9TH EDITION EXAM AND STUDY GUIDE
NEWEST 2025 TEST BANK| NBDHE 9TH EDITION
DARBY AND WALSH WITH COMPLETE 450 ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+ (BRAND NEW!!)
The tissue(s) that have nerve innervation are:
a. Dentin
b. Pulp and dentin
c. Pulp and periodontal ligament
d. Cementum
e. All of the above
.....ANSWER..... C. The pulp and the periodontal ligament have
nerve innervation.
The free unmyelinated nerve endings of the pulp can sense:
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a. Hot
b. Cold
c. Pressure
d. Pain
e. All of the above
.....ANSWER..... D. 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 buds that
grow from:
a. A successional dental lamina.
b. Primary tooth buds.
c. The posterior part of palatal shelves.
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d. Extension of the primary second molar's dental lamina.
.....ANSWER..... D. 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 preameloblasts
c. Tomes' process
d. Disintegrating basement membrane
.....ANSWER..... C. The enamel matrix is directly secreted from
Tomes process
The pink labial mucosa or buccal mucosa meets the redder _____
at the mucobuccal fold.
a. Marginal gingiva
b. Attached gingiva
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c. Alveolar mucosa
.....ANSWER..... C. 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 into:
a. Pulp tissue
b. Preameloblasts
c. Odontoblasts
d. Cementoblast .....ANSWER..... C. Outer cells differentiate into
dentin-secreting cells, odontoblasts
Which stage of tooth formation occurs for the primary dentition
during the 11th and 12th week of prenatal development?
a. Bell Stage
b. Initiation Stage
NBDHE 9TH EDITION EXAM AND STUDY GUIDE
NEWEST 2025 TEST BANK| NBDHE 9TH EDITION
DARBY AND WALSH WITH COMPLETE 450 ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+ (BRAND NEW!!)
The tissue(s) that have nerve innervation are:
a. Dentin
b. Pulp and dentin
c. Pulp and periodontal ligament
d. Cementum
e. All of the above
.....ANSWER..... C. The pulp and the periodontal ligament have
nerve innervation.
The free unmyelinated nerve endings of the pulp can sense:
,Page 2 of 256
a. Hot
b. Cold
c. Pressure
d. Pain
e. All of the above
.....ANSWER..... D. 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 buds that
grow from:
a. A successional dental lamina.
b. Primary tooth buds.
c. The posterior part of palatal shelves.
,Page 3 of 256
d. Extension of the primary second molar's dental lamina.
.....ANSWER..... D. 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 preameloblasts
c. Tomes' process
d. Disintegrating basement membrane
.....ANSWER..... C. The enamel matrix is directly secreted from
Tomes process
The pink labial mucosa or buccal mucosa meets the redder _____
at the mucobuccal fold.
a. Marginal gingiva
b. Attached gingiva
, Page 4 of 256
c. Alveolar mucosa
.....ANSWER..... C. 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 into:
a. Pulp tissue
b. Preameloblasts
c. Odontoblasts
d. Cementoblast .....ANSWER..... C. Outer cells differentiate into
dentin-secreting cells, odontoblasts
Which stage of tooth formation occurs for the primary dentition
during the 11th and 12th week of prenatal development?
a. Bell Stage
b. Initiation Stage
