HESI DENTAL HYGIENE
PRACTICE TEST - CLASSIC
VERSION 1 EXAM 2025 QUESTIONS
AND ANSWERS
Under which classification of gingival diseases and conditions is puberty-
associated gingivitis found? - ....ANSWER ...-Plaque-Induced Gingival
diseases modified by systemic factors
A patient presents with a short, thick lingual frenum that results in limited tongue
movement affecting speech. Which is the most likely diagnosis of this condition? -
....ANSWER ...-Ankyloglossia
When is tooth eruption complete? - ....ANSWER ...-Tooth has made contact
with its antagonists in opposing jaw
When does mixed dentition begin? - ....ANSWER ...-Eruption of first
permanent tooth
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,How many succedaneous teeth are in permanent dentition? -
....ANSWER ...-20
The junction of a buccal and lingual triangular ridge is a transverse ridge. The
oblique ridge of a maxillary molar is an example of a transverse ridge. -
....ANSWER ...-The first statement is true and the second is false
Which factor makes aging enamel less susceptible to caries? -
....ANSWER ...-reduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular
second premolar? - ....ANSWER ...-Distolingual
Which is true regarding the height of contour? - ....ANSWER ...-Greatest
elevation of tooth either incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr old
child? - ....ANSWER ...-14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? - ....ANSWER ...-
line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth
including the incised edge or angle? - ....ANSWER ...-IV
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,Which ridge is a unique characteristic of permanent maxillary molars? -
....ANSWER ...-Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -
....ANSWER ...-Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial
nerve? - ....ANSWER ...-VII
Which is the target area for the inferior alveolar nerve block? -
....ANSWER ...-mandibular foramen on medial surface of mandible
Which salivary gland is encapsulated? - ....ANSWER ...-Sublingual
Which type of joint is the temporomandibular? - ....ANSWER ...-Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown
of salivary gland secretion? - ....ANSWER ...-autonomic; sympathetic
Destroyed enamel cannot reform since the cells that formed it no longer exist.
Cavitated enamel can repair itself by the incorporation of calcium and phosphate
ions from saliva? - ....ANSWER ...-First statement is true second statement
is false
Which bacterium is most important in causing the progression of carious lesions? -
....ANSWER ...-Aciduric
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, Anaerobe bacteria - ....ANSWER ...-grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - ....ANSWER ...-
capsule
Which bacteria grow best in refrigerated conditions? - ....ANSWER ...-
Psychrophils
Endotoxin is a virulence property of - ....ANSWER ...-gram-negative
bacteria
When comparing viruses to bacteria, viruses - ....ANSWER ...-enter host
cells before they can multiply
Which is treated with nystatin? - ....ANSWER ...-Candidiasis
Which is detected in the blood within two months after successful immunization
with the hepatitis B vaccine? - ....ANSWER ...-Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in
examination gloves? - ....ANSWER ...-I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever,
and pharyngitis? - ....ANSWER ...-Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the
EXCEPTION?
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
PRACTICE TEST - CLASSIC
VERSION 1 EXAM 2025 QUESTIONS
AND ANSWERS
Under which classification of gingival diseases and conditions is puberty-
associated gingivitis found? - ....ANSWER ...-Plaque-Induced Gingival
diseases modified by systemic factors
A patient presents with a short, thick lingual frenum that results in limited tongue
movement affecting speech. Which is the most likely diagnosis of this condition? -
....ANSWER ...-Ankyloglossia
When is tooth eruption complete? - ....ANSWER ...-Tooth has made contact
with its antagonists in opposing jaw
When does mixed dentition begin? - ....ANSWER ...-Eruption of first
permanent tooth
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,How many succedaneous teeth are in permanent dentition? -
....ANSWER ...-20
The junction of a buccal and lingual triangular ridge is a transverse ridge. The
oblique ridge of a maxillary molar is an example of a transverse ridge. -
....ANSWER ...-The first statement is true and the second is false
Which factor makes aging enamel less susceptible to caries? -
....ANSWER ...-reduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular
second premolar? - ....ANSWER ...-Distolingual
Which is true regarding the height of contour? - ....ANSWER ...-Greatest
elevation of tooth either incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr old
child? - ....ANSWER ...-14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? - ....ANSWER ...-
line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth
including the incised edge or angle? - ....ANSWER ...-IV
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,Which ridge is a unique characteristic of permanent maxillary molars? -
....ANSWER ...-Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -
....ANSWER ...-Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial
nerve? - ....ANSWER ...-VII
Which is the target area for the inferior alveolar nerve block? -
....ANSWER ...-mandibular foramen on medial surface of mandible
Which salivary gland is encapsulated? - ....ANSWER ...-Sublingual
Which type of joint is the temporomandibular? - ....ANSWER ...-Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown
of salivary gland secretion? - ....ANSWER ...-autonomic; sympathetic
Destroyed enamel cannot reform since the cells that formed it no longer exist.
Cavitated enamel can repair itself by the incorporation of calcium and phosphate
ions from saliva? - ....ANSWER ...-First statement is true second statement
is false
Which bacterium is most important in causing the progression of carious lesions? -
....ANSWER ...-Aciduric
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
, Anaerobe bacteria - ....ANSWER ...-grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - ....ANSWER ...-
capsule
Which bacteria grow best in refrigerated conditions? - ....ANSWER ...-
Psychrophils
Endotoxin is a virulence property of - ....ANSWER ...-gram-negative
bacteria
When comparing viruses to bacteria, viruses - ....ANSWER ...-enter host
cells before they can multiply
Which is treated with nystatin? - ....ANSWER ...-Candidiasis
Which is detected in the blood within two months after successful immunization
with the hepatitis B vaccine? - ....ANSWER ...-Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in
examination gloves? - ....ANSWER ...-I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever,
and pharyngitis? - ....ANSWER ...-Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the
EXCEPTION?
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 4
