HESI DENTAL HYGIENE EXAM QUESTION &
ANSWERS | LATEST UPDATE 2026/2027 | GRADED
A+ | GUARANTEED PASS.
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
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
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
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
C. Nizoral
D. Rifampin - correct answer C. Nizoral
Which condition warrants antibiotic premedication? - correct answer Repaired congenital
heart disease
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
correct answer Cobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the
EXCEPTION? - correct answer Propranolol (adrenergic blocking agent which reduces high blood
pressure)
Which food is a good source of vitamin K? - correct answer Kale!
;milk is an excellent source of calcium; strawberries & sweet potatoes are rich in vitamin c
Which medication is administered to manage an acute asthma attack? - correct answer
Albuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - correct answer statin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps
absorb calcium. - correct answer Both the statement and reason are correct but not related.
Consuming foods high in retinol will help prevent night blindness. Vitamin D DOES help
absorb calcium.
Which meal lacks an excellent source of vitamin C? - correct answer Steak, brown rice, and
corn
Although corn has some vitamin C, it is not an excellent source as provided from broccoli,
strawberries, and cantaloupe
Which element is found in proteins and not carbohydrates? - correct answer Iron
Nitrogen is found in protein, but not carbohydrates. Iron is not an element found in either
nutrient. Carbon and oxygen are found in carbohydrates and proteins.
Some vitamin K requirements are met through the synthesis of - correct answer intestinal
bacteria
Which vitamin is associated with the deficiency beriberi? - correct answer Thiamin
Which is primarily responsible for pharmacologic metabolism? - correct answer Liver
Which procedure establishes the most definitive diagnosis for oral cancer? - correct answer
ANSWERS | LATEST UPDATE 2026/2027 | GRADED
A+ | GUARANTEED PASS.
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
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
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
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
C. Nizoral
D. Rifampin - correct answer C. Nizoral
Which condition warrants antibiotic premedication? - correct answer Repaired congenital
heart disease
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
correct answer Cobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the
EXCEPTION? - correct answer Propranolol (adrenergic blocking agent which reduces high blood
pressure)
Which food is a good source of vitamin K? - correct answer Kale!
;milk is an excellent source of calcium; strawberries & sweet potatoes are rich in vitamin c
Which medication is administered to manage an acute asthma attack? - correct answer
Albuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - correct answer statin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps
absorb calcium. - correct answer Both the statement and reason are correct but not related.
Consuming foods high in retinol will help prevent night blindness. Vitamin D DOES help
absorb calcium.
Which meal lacks an excellent source of vitamin C? - correct answer Steak, brown rice, and
corn
Although corn has some vitamin C, it is not an excellent source as provided from broccoli,
strawberries, and cantaloupe
Which element is found in proteins and not carbohydrates? - correct answer Iron
Nitrogen is found in protein, but not carbohydrates. Iron is not an element found in either
nutrient. Carbon and oxygen are found in carbohydrates and proteins.
Some vitamin K requirements are met through the synthesis of - correct answer intestinal
bacteria
Which vitamin is associated with the deficiency beriberi? - correct answer Thiamin
Which is primarily responsible for pharmacologic metabolism? - correct answer Liver
Which procedure establishes the most definitive diagnosis for oral cancer? - correct answer
