HESI Dental Hygiene Practice Questions
With Verified Answers 2025/2026 Latest
Updated version |Guaranteed Pass|
Under which classification of gingival diseases and conditions is puberty-
associated gingivitis found? - ANS>> 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? - ANS>> Ankyloglossia
When is tooth eruption complete? - ANS>> Tooth has made contact with its
antagonists in opposing jaw
When does mixed dentition begin? - ANS>> Eruption of first permanent
tooth
How many succedaneous teeth are in permanent dentition? - ANS>> 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. -
ANS>> The first statement is true and the second is false
Which factor makes aging enamel less susceptible to caries? - ANS>>
reduced permeability
Which groove is the most identifying characteristic of a three-cusp
mandibular second premolar? - ANS>> Distolingual
Which is true regarding the height of contour? - ANS>> Greatest elevation
of tooth either incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr
old child? - ANS>> 14 primary; 10 permanent
,Which describes the junction of two surfaces of a crown? - ANS>> line
angle
Which G.V. Black classification involves the proximal surfaces of anterior
teeth including the incised edge or angle? - ANS>> IV
Which ridge is a unique characteristic of permanent maxillary molars? -
ANS>> Oblique
Which division of the fifth cranial nerve innervates the temporomandibular
joint? - ANS>> Mandibular
Facial paralysis can result from damage to the motor neurons of which
cranial nerve? - ANS>> VII
Which is the target area for the inferior alveolar nerve block? - ANS>>
mandibular foramen on medial surface of mandible
Which bacterium is most important in causing the progression of carious
lesions? - ANS>> Aciduric
Anaerobe bacteria - ANS>> grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - ANS>> capsule
Which bacteria grow best in refrigerated conditions? - ANS>> Psychrophils
Endotoxin is a virulence property of - ANS>> gram-negative bacteria
When comparing viruses to bacteria, viruses - ANS>> enter host cells
before they can multiply
Which is treated with nystatin? - ANS>> Candidiasis
Which is detected in the blood within two months after successful
immunization with the hepatitis B vaccine? - ANS>> Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in
examination gloves? - ANS>> I
,Which bacterial genus contains species that cause pneumatic fever, scarlet
fever, and pharyngitis? - ANS>> Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the
EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - ANS>> C. Nizoral
Which condition warrants antibiotic premedication? - ANS>> Repaired
congenital heart disease
It is noted the medical history the patient has mitral valve prolapse, a stent,
pneumatic heart disease, and a renal dialysis shunt. For which condition
does the patient require antibiotic predication? - ANS>> Renal dialysis
shunt
A patient's prescription has the abbreviation "qid" meaning? - ANS>> take
medication four times a day
Which salivary gland is encapsulated? - ANS>> Sublingual
Which type of joint is the temporomandibular? - ANS>> Synovial
Which peripheral nervous system and subdivision are responsible for a
shutdown of salivary gland secretion? - ANS>> 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? - ANS>> First statement is true second
statement is false
Which schedule of controlled substance is indicated when a prescription
states "NO REFILLS" - ANS>> schedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of
nitrous oxide? - ANS>> Cobalamin (vitamin B-12)
, Each of the following is a calcium blocking agent EXCEPT one. Which one
is the EXCEPTION? - ANS>> Propranolol (adrenergic blocking agent which
reduces high blood pressure)
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? - ANS>> 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? - ANS>> 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 - ANS>>
intestinal bacteria
Which vitamin is associated with the deficiency beriberi? - ANS>> Thiamin
Which is primarily responsible for pharmacologic metabolism? - ANS>>
Liver
Which procedure establishes the most definitive diagnosis for oral cancer?
- ANS>> Scalpel biopsy
A 17 yr old presents for a third molar evaluation. The panoramic radiograph
reveals the apical thirst of roots #1 & #2 have fused together. Which best
defines this anomaly? - ANS>> Concrescence
Concrescence is the fusion of 2 individually developed teeth with
cementum only. Gemination occurs when a single tooth bud forms tow
joined teeth.
A patient's intramural examination reveals a well-circumscribed, raised
lesion along the lateral border of the tongue. The lesion is soft, deep purple
With Verified Answers 2025/2026 Latest
Updated version |Guaranteed Pass|
Under which classification of gingival diseases and conditions is puberty-
associated gingivitis found? - ANS>> 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? - ANS>> Ankyloglossia
When is tooth eruption complete? - ANS>> Tooth has made contact with its
antagonists in opposing jaw
When does mixed dentition begin? - ANS>> Eruption of first permanent
tooth
How many succedaneous teeth are in permanent dentition? - ANS>> 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. -
ANS>> The first statement is true and the second is false
Which factor makes aging enamel less susceptible to caries? - ANS>>
reduced permeability
Which groove is the most identifying characteristic of a three-cusp
mandibular second premolar? - ANS>> Distolingual
Which is true regarding the height of contour? - ANS>> Greatest elevation
of tooth either incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr
old child? - ANS>> 14 primary; 10 permanent
,Which describes the junction of two surfaces of a crown? - ANS>> line
angle
Which G.V. Black classification involves the proximal surfaces of anterior
teeth including the incised edge or angle? - ANS>> IV
Which ridge is a unique characteristic of permanent maxillary molars? -
ANS>> Oblique
Which division of the fifth cranial nerve innervates the temporomandibular
joint? - ANS>> Mandibular
Facial paralysis can result from damage to the motor neurons of which
cranial nerve? - ANS>> VII
Which is the target area for the inferior alveolar nerve block? - ANS>>
mandibular foramen on medial surface of mandible
Which bacterium is most important in causing the progression of carious
lesions? - ANS>> Aciduric
Anaerobe bacteria - ANS>> grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - ANS>> capsule
Which bacteria grow best in refrigerated conditions? - ANS>> Psychrophils
Endotoxin is a virulence property of - ANS>> gram-negative bacteria
When comparing viruses to bacteria, viruses - ANS>> enter host cells
before they can multiply
Which is treated with nystatin? - ANS>> Candidiasis
Which is detected in the blood within two months after successful
immunization with the hepatitis B vaccine? - ANS>> Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in
examination gloves? - ANS>> I
,Which bacterial genus contains species that cause pneumatic fever, scarlet
fever, and pharyngitis? - ANS>> Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the
EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - ANS>> C. Nizoral
Which condition warrants antibiotic premedication? - ANS>> Repaired
congenital heart disease
It is noted the medical history the patient has mitral valve prolapse, a stent,
pneumatic heart disease, and a renal dialysis shunt. For which condition
does the patient require antibiotic predication? - ANS>> Renal dialysis
shunt
A patient's prescription has the abbreviation "qid" meaning? - ANS>> take
medication four times a day
Which salivary gland is encapsulated? - ANS>> Sublingual
Which type of joint is the temporomandibular? - ANS>> Synovial
Which peripheral nervous system and subdivision are responsible for a
shutdown of salivary gland secretion? - ANS>> 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? - ANS>> First statement is true second
statement is false
Which schedule of controlled substance is indicated when a prescription
states "NO REFILLS" - ANS>> schedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of
nitrous oxide? - ANS>> Cobalamin (vitamin B-12)
, Each of the following is a calcium blocking agent EXCEPT one. Which one
is the EXCEPTION? - ANS>> Propranolol (adrenergic blocking agent which
reduces high blood pressure)
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? - ANS>> 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? - ANS>> 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 - ANS>>
intestinal bacteria
Which vitamin is associated with the deficiency beriberi? - ANS>> Thiamin
Which is primarily responsible for pharmacologic metabolism? - ANS>>
Liver
Which procedure establishes the most definitive diagnosis for oral cancer?
- ANS>> Scalpel biopsy
A 17 yr old presents for a third molar evaluation. The panoramic radiograph
reveals the apical thirst of roots #1 & #2 have fused together. Which best
defines this anomaly? - ANS>> Concrescence
Concrescence is the fusion of 2 individually developed teeth with
cementum only. Gemination occurs when a single tooth bud forms tow
joined teeth.
A patient's intramural examination reveals a well-circumscribed, raised
lesion along the lateral border of the tongue. The lesion is soft, deep purple
