TCDHA Histology Midterm Exam | Most Recent Exam 2026
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What is the function of the lingual papillae? - ANSWER-They
are found on the upper surface of the tongue, scattered
amongst the filiform papillae but are mostly present on the tip
and sides of the tongue. They have taste buds on their upper
surface which can distinguish the five tastes: sweet, sour,
bitter, salty, and umami.
What connects tongue to floor of the mouth? - ANSWER-median
fold of mucous
membrane, the
frenulum
what causes Dentin Hypersensitivity - ANSWER-due to the
exposure of dentin, the part of the tooth which covers the
nerve, either through loss of the enamel layer or recession of
the gums. Temperature changes and certain foods (acidic or
sweet) can cause the tooth or teeth to be painful.
what is Hydrodynamic Theory of Dentinal Hypersensitivity? -
ANSWER-It is believed that DH is made as the result of
,movement of the fluid inside the dentinal tubules, which is
further due to the thermal and physical changes, or as the
result of formation of osmotic stimuli near the exposed
dentine.
what is Incremental lines of Von Ebner? - ANSWER-The lines
of von Ebner
represent cyclic activity of the odontoblasts during
dentin formation.
what are Neonatal lines? - ANSWER-pronounced line of
retzius marked by
stress/trauma experienced by ameloblasts
during birth
what is Tome's granular layer? - ANSWER-ound in root area of
tooth just below
cementum. It is thin, hypomineralized spotted areas
giving it a granular
appearance.
Cause=unknown
what is Dentinogenesis imperfecta? - ANSWER-If dentin is
poorly formed,
enamel will
chip off
what are Dead Tracts ? - ANSWER-Empty tubules resulting
from loss of the
, odontoblastic processes or
odontoblast death
Sclerotic Dentin - ANSWER-Transparent dentin, Tubules
become completely calcified as a result of injury(caires) or
normal aging. Odontoblastic processes die and leave dentinal
tubules vacant.
what is Internal Resorption? - ANSWER-process by which all or
part of a tooth structure is lost due to activation of the body's
innate capacity to remove mineralized tissue, as mediated via
cells such as osteoclasts. Types include external resorption
and internal resorption. It can be due to trauma, infection, or
hyperplasia
what are Dentinal Caries? - ANSWER-scientific term for tooth
decay or cavities.
It is caused by specific types of bacteria. They produce acid
that destroys the
tooth's enamel and the layer under it, the dentin. ... They build
up on the teeth in
a sticky film called
plaque.
what is pulp? - ANSWER-Connective tissue. Mesenchymal,
derived from the
dental papilla (like
dentin).
Actual Comprehensive Real Exam Questions With Correct
Answers (Verified Answers) Already Graded A+ | Guaranteed
Success!! | Newest Exam | Just Released!!
What is the function of the lingual papillae? - ANSWER-They
are found on the upper surface of the tongue, scattered
amongst the filiform papillae but are mostly present on the tip
and sides of the tongue. They have taste buds on their upper
surface which can distinguish the five tastes: sweet, sour,
bitter, salty, and umami.
What connects tongue to floor of the mouth? - ANSWER-median
fold of mucous
membrane, the
frenulum
what causes Dentin Hypersensitivity - ANSWER-due to the
exposure of dentin, the part of the tooth which covers the
nerve, either through loss of the enamel layer or recession of
the gums. Temperature changes and certain foods (acidic or
sweet) can cause the tooth or teeth to be painful.
what is Hydrodynamic Theory of Dentinal Hypersensitivity? -
ANSWER-It is believed that DH is made as the result of
,movement of the fluid inside the dentinal tubules, which is
further due to the thermal and physical changes, or as the
result of formation of osmotic stimuli near the exposed
dentine.
what is Incremental lines of Von Ebner? - ANSWER-The lines
of von Ebner
represent cyclic activity of the odontoblasts during
dentin formation.
what are Neonatal lines? - ANSWER-pronounced line of
retzius marked by
stress/trauma experienced by ameloblasts
during birth
what is Tome's granular layer? - ANSWER-ound in root area of
tooth just below
cementum. It is thin, hypomineralized spotted areas
giving it a granular
appearance.
Cause=unknown
what is Dentinogenesis imperfecta? - ANSWER-If dentin is
poorly formed,
enamel will
chip off
what are Dead Tracts ? - ANSWER-Empty tubules resulting
from loss of the
, odontoblastic processes or
odontoblast death
Sclerotic Dentin - ANSWER-Transparent dentin, Tubules
become completely calcified as a result of injury(caires) or
normal aging. Odontoblastic processes die and leave dentinal
tubules vacant.
what is Internal Resorption? - ANSWER-process by which all or
part of a tooth structure is lost due to activation of the body's
innate capacity to remove mineralized tissue, as mediated via
cells such as osteoclasts. Types include external resorption
and internal resorption. It can be due to trauma, infection, or
hyperplasia
what are Dentinal Caries? - ANSWER-scientific term for tooth
decay or cavities.
It is caused by specific types of bacteria. They produce acid
that destroys the
tooth's enamel and the layer under it, the dentin. ... They build
up on the teeth in
a sticky film called
plaque.
what is pulp? - ANSWER-Connective tissue. Mesenchymal,
derived from the
dental papilla (like
dentin).
