NBDHE EXAM ACTUAL EXAM 2025 |
NATIONAL BOARD DENTAL HYGIENE
EXAMINATION | COMPLETE QUESTIONS
AND CORRECT ANSWERS
A cyst is - CORRECT ANSWER- an abnormal pathologic sac
a cavity lined by epithelial tissue
enclosed by connective tissue
diagnosed on the basis of histologic appearance and location
in which layer of the epidermis are cells undergoing mitosis most likely to
be seen? - CORRECT ANSWER- stratum basal
hypersensitivity of the dentinal surface to external stimuli is caused by...
- CORRECT ANSWER- fluid movement within the tubules that transmit
signals to the nerves in the pulp chamber
which tissues have nerve innervations? - CORRECT ANSWER- pulp
periodontal ligament
because of the proximity of odontoblastic cell bodies to the nerve
terminal endings in the tooth, clinical exposure of dentin may result in
sensitivity. what is the location of odontoblastic bodies? - CORRECT
ANSWER- pulp
tooth structure loss that occurs from pathologic wear of teeth by foreign
substance is called - CORRECT ANSWER- abrasion
the cres of the alveolar bone is usually apical to the cemento-enamel
junction by.. - CORRECT ANSWER- 0.75 to 1.49 mm
,how do cysts show up radiographically - CORRECT ANSWER- with a
well defined border
how do soft tissues cysts show up radiographically - CORRECT
ANSWER- they do not show up on radiographs
the tissue lining of an unhealthy gingival sulcus consists of -
CORRECT ANSWER- nonkeratinized epithelium with rete pegs
the bottom of the gingival sulcus is marked by the.. - CORRECT
ANSWER- junctional epithelium
which tissues have little or no keratinization? - CORRECT ANSWER-
sulcular epithelium
what does bleeding caused by probing indicate? - CORRECT
ANSWER- ulceration of crevicular epithelium
which tissue changes result in erythematous gingiva - CORRECT
ANSWER- increased vascularization of the underlying vascular
connective tissue
what type of connective tissue underlies the epithelium of the gingival?
- CORRECT ANSWER- fibrous which gives it its firm consistency
in gingivitis, poor tissue tone is caused by - CORRECT ANSWER-
destruction of collagen fibers
definitive diagnosis of furcation involvement is made by - CORRECT
ANSWER- clinical probing because it cant always be seen in
radiographs
enamel projections of the root surface are attributed to the differentiation
of - CORRECT ANSWER- hertwig's epithelial root sheath
hertwig's epithelial root sheath is derived from the - CORRECT
ANSWER- reduced enamel epithelium
,hertwing's epithelial root sheath is entirely composed of - CORRECT
ANSWER- inner and outer enamel epithelium
when is root formation completed? - CORRECT ANSWER- 1-4 years
after eruption
remnants of hertwig's epithelial root sheath found in the periodontal
ligament of a functioning tooth are called - CORRECT ANSWER-
rests of malassez
the stippled texture of gingiva may be attributed to - CORRECT
ANSWER- connective tissue projections
the color of gingiva may be attributed to - CORRECT ANSWER-
keratinization
thickness of the epithelium
blood supply
pigmentation
a specialized periosteum which forms and resorbs bone and cementum
is called - CORRECT ANSWER- periodontal ligament
what is the outer less calcified layer of cementum that results in
cementum resorbing less readily than bone ? - CORRECT ANSWER-
cementoid
cementum is a product of - CORRECT ANSWER- periodontal
ligament
which cells does the periodontal ligament contain? - CORRECT
ANSWER- osteoblasts
osteoclasts
cementoblasts
cementoclasts
a cleft-like absence of the alveolar cortical plate resulting in a denuded
root surface is called - CORRECT ANSWER- dehiscence
, characteristics of bundle bone (alveolar bone proper) - CORRECT
ANSWER- adjacent to the periodontal ligament and containing
sharpey's fibers
which tissues of the normal periodontium is the alveolar bone directly
adjacent to? - CORRECT ANSWER- periodontal ligament and
gingival connective tissue
the cells that are important in the formation of the principal fibers of the
periodontal ligament are - CORRECT ANSWER- fibroblasts
the types of epithelia found lining the oral cavity include - CORRECT
ANSWER- keratinized and nonkeratinized stratified squamous
epithelial tissues are characterized by - CORRECT ANSWER- little
intercellular substance and many cells
embryonically, the mandible is derived from the - CORRECT
ANSWER- first branchial arch
the anterior portion, or body, of the tongue develops from the -
CORRECT ANSWER- mandibular process
a cleft lip occurs when the maxillary process fails to fuse with the -
CORRECT ANSWER- globular process
one of the first structures of the face to develop in the primitive embryo is
the - CORRECT ANSWER- stomodeum
the lateral palatine processes initially grow downward toward the future
floor of the mouth. this is caused by the presence of the - CORRECT
ANSWER- tongue
when a cleft of the alveolar process is present, it occurs between the -
CORRECT ANSWER- lateral incisor and canine
the cementum is derived from the - CORRECT ANSWER- dental sac
NATIONAL BOARD DENTAL HYGIENE
EXAMINATION | COMPLETE QUESTIONS
AND CORRECT ANSWERS
A cyst is - CORRECT ANSWER- an abnormal pathologic sac
a cavity lined by epithelial tissue
enclosed by connective tissue
diagnosed on the basis of histologic appearance and location
in which layer of the epidermis are cells undergoing mitosis most likely to
be seen? - CORRECT ANSWER- stratum basal
hypersensitivity of the dentinal surface to external stimuli is caused by...
- CORRECT ANSWER- fluid movement within the tubules that transmit
signals to the nerves in the pulp chamber
which tissues have nerve innervations? - CORRECT ANSWER- pulp
periodontal ligament
because of the proximity of odontoblastic cell bodies to the nerve
terminal endings in the tooth, clinical exposure of dentin may result in
sensitivity. what is the location of odontoblastic bodies? - CORRECT
ANSWER- pulp
tooth structure loss that occurs from pathologic wear of teeth by foreign
substance is called - CORRECT ANSWER- abrasion
the cres of the alveolar bone is usually apical to the cemento-enamel
junction by.. - CORRECT ANSWER- 0.75 to 1.49 mm
,how do cysts show up radiographically - CORRECT ANSWER- with a
well defined border
how do soft tissues cysts show up radiographically - CORRECT
ANSWER- they do not show up on radiographs
the tissue lining of an unhealthy gingival sulcus consists of -
CORRECT ANSWER- nonkeratinized epithelium with rete pegs
the bottom of the gingival sulcus is marked by the.. - CORRECT
ANSWER- junctional epithelium
which tissues have little or no keratinization? - CORRECT ANSWER-
sulcular epithelium
what does bleeding caused by probing indicate? - CORRECT
ANSWER- ulceration of crevicular epithelium
which tissue changes result in erythematous gingiva - CORRECT
ANSWER- increased vascularization of the underlying vascular
connective tissue
what type of connective tissue underlies the epithelium of the gingival?
- CORRECT ANSWER- fibrous which gives it its firm consistency
in gingivitis, poor tissue tone is caused by - CORRECT ANSWER-
destruction of collagen fibers
definitive diagnosis of furcation involvement is made by - CORRECT
ANSWER- clinical probing because it cant always be seen in
radiographs
enamel projections of the root surface are attributed to the differentiation
of - CORRECT ANSWER- hertwig's epithelial root sheath
hertwig's epithelial root sheath is derived from the - CORRECT
ANSWER- reduced enamel epithelium
,hertwing's epithelial root sheath is entirely composed of - CORRECT
ANSWER- inner and outer enamel epithelium
when is root formation completed? - CORRECT ANSWER- 1-4 years
after eruption
remnants of hertwig's epithelial root sheath found in the periodontal
ligament of a functioning tooth are called - CORRECT ANSWER-
rests of malassez
the stippled texture of gingiva may be attributed to - CORRECT
ANSWER- connective tissue projections
the color of gingiva may be attributed to - CORRECT ANSWER-
keratinization
thickness of the epithelium
blood supply
pigmentation
a specialized periosteum which forms and resorbs bone and cementum
is called - CORRECT ANSWER- periodontal ligament
what is the outer less calcified layer of cementum that results in
cementum resorbing less readily than bone ? - CORRECT ANSWER-
cementoid
cementum is a product of - CORRECT ANSWER- periodontal
ligament
which cells does the periodontal ligament contain? - CORRECT
ANSWER- osteoblasts
osteoclasts
cementoblasts
cementoclasts
a cleft-like absence of the alveolar cortical plate resulting in a denuded
root surface is called - CORRECT ANSWER- dehiscence
, characteristics of bundle bone (alveolar bone proper) - CORRECT
ANSWER- adjacent to the periodontal ligament and containing
sharpey's fibers
which tissues of the normal periodontium is the alveolar bone directly
adjacent to? - CORRECT ANSWER- periodontal ligament and
gingival connective tissue
the cells that are important in the formation of the principal fibers of the
periodontal ligament are - CORRECT ANSWER- fibroblasts
the types of epithelia found lining the oral cavity include - CORRECT
ANSWER- keratinized and nonkeratinized stratified squamous
epithelial tissues are characterized by - CORRECT ANSWER- little
intercellular substance and many cells
embryonically, the mandible is derived from the - CORRECT
ANSWER- first branchial arch
the anterior portion, or body, of the tongue develops from the -
CORRECT ANSWER- mandibular process
a cleft lip occurs when the maxillary process fails to fuse with the -
CORRECT ANSWER- globular process
one of the first structures of the face to develop in the primitive embryo is
the - CORRECT ANSWER- stomodeum
the lateral palatine processes initially grow downward toward the future
floor of the mouth. this is caused by the presence of the - CORRECT
ANSWER- tongue
when a cleft of the alveolar process is present, it occurs between the -
CORRECT ANSWER- lateral incisor and canine
the cementum is derived from the - CORRECT ANSWER- dental sac
