HESI Dental Hygiene Practice Test - Classic
Version 1 UPDATED ACTUAL Questions
and CORRECT Answers
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found? -
CORRECT 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? - CORRECT ANSWER -
Ankyloglossia
When is tooth eruption complete? - CORRECT ANSWER -Tooth has made contact with its
antagonists in opposing jaw
When does mixed dentition begin? - CORRECT ANSWER -Eruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? - CORRECT 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. - CORRECT ANSWER -The first statement is
true and the second is false
Which factor makes aging enamel less susceptible to caries? - CORRECT ANSWER -reduced
permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar? -
CORRECT ANSWER -Distolingual
Which is true regarding the height of contour? - CORRECT ANSWER -Greatest elevation of tooth
either incisocervically or occlusocervically
,How many primary and permanent teeth are typically present in an eight yr old child? - CORRECT
ANSWER -14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? - CORRECT ANSWER -line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? - CORRECT ANSWER -IV
Which ridge is a unique characteristic of permanent maxillary molars? - CORRECT ANSWER -
Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? - CORRECT
ANSWER -Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? - CORRECT
ANSWER -VII
Which is the target area for the inferior alveolar nerve block? - CORRECT ANSWER -mandibular
foramen on medial surface of mandible
Which salivary gland is encapsulated? - CORRECT ANSWER -Sublingual
Which type of joint is the temporomandibular? - CORRECT ANSWER -Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary gland
secretion? - CORRECT 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? - CORRECT
ANSWER -First statement is true second statement is false
, Which bacterium is most important in causing the progression of carious lesions? - CORRECT
ANSWER -Aciduric
Anaerobe bacteria - CORRECT ANSWER -grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - CORRECT ANSWER -capsule
Which bacteria grow best in refrigerated conditions? - CORRECT ANSWER -Psychrophils
Endotoxin is a virulence property of - CORRECT ANSWER -gram-negative bacteria
When comparing viruses to bacteria, viruses - CORRECT ANSWER -enter host cells before they
can multiply
Which is treated with nystatin? - CORRECT ANSWER -Candidiasis
Which is detected in the blood within two months after successful immunization with the hepatitis B
vaccine? - CORRECT ANSWER -Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination gloves? -
CORRECT ANSWER -I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and pharyngitis? -
CORRECT ANSWER -Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
Version 1 UPDATED ACTUAL Questions
and CORRECT Answers
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found? -
CORRECT 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? - CORRECT ANSWER -
Ankyloglossia
When is tooth eruption complete? - CORRECT ANSWER -Tooth has made contact with its
antagonists in opposing jaw
When does mixed dentition begin? - CORRECT ANSWER -Eruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? - CORRECT 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. - CORRECT ANSWER -The first statement is
true and the second is false
Which factor makes aging enamel less susceptible to caries? - CORRECT ANSWER -reduced
permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar? -
CORRECT ANSWER -Distolingual
Which is true regarding the height of contour? - CORRECT ANSWER -Greatest elevation of tooth
either incisocervically or occlusocervically
,How many primary and permanent teeth are typically present in an eight yr old child? - CORRECT
ANSWER -14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? - CORRECT ANSWER -line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? - CORRECT ANSWER -IV
Which ridge is a unique characteristic of permanent maxillary molars? - CORRECT ANSWER -
Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? - CORRECT
ANSWER -Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? - CORRECT
ANSWER -VII
Which is the target area for the inferior alveolar nerve block? - CORRECT ANSWER -mandibular
foramen on medial surface of mandible
Which salivary gland is encapsulated? - CORRECT ANSWER -Sublingual
Which type of joint is the temporomandibular? - CORRECT ANSWER -Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary gland
secretion? - CORRECT 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? - CORRECT
ANSWER -First statement is true second statement is false
, Which bacterium is most important in causing the progression of carious lesions? - CORRECT
ANSWER -Aciduric
Anaerobe bacteria - CORRECT ANSWER -grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - CORRECT ANSWER -capsule
Which bacteria grow best in refrigerated conditions? - CORRECT ANSWER -Psychrophils
Endotoxin is a virulence property of - CORRECT ANSWER -gram-negative bacteria
When comparing viruses to bacteria, viruses - CORRECT ANSWER -enter host cells before they
can multiply
Which is treated with nystatin? - CORRECT ANSWER -Candidiasis
Which is detected in the blood within two months after successful immunization with the hepatitis B
vaccine? - CORRECT ANSWER -Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination gloves? -
CORRECT ANSWER -I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and pharyngitis? -
CORRECT ANSWER -Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
