HESI Dental Hygiene Exam 2025 – All Actual Questions with
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
Under which classification of gingival diseases and conditions is puberty-associated
gingivitis found? - ansPlaque-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? - ansAnkyloglossia
When is tooth eruption complete? - ansTooth has made contact with its antagonists in
opposing jaw
When does mixed dentition begin? - ansEruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? - ans20
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. - ansThe first statement is true and
the second is false
Which factor makes aging enamel less susceptible to caries? - ansreduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second
premolar? - ansDistolingual
Which is true regarding the height of contour? - ansGreatest elevation of tooth either
incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr old child? - ans14
primary; 10 permanent
Which describes the junction of two surfaces of a crown? - ansline angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the
incised edge or angle? - ansIV
Which ridge is a unique characteristic of permanent maxillary molars? - ansOblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -
ansMandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? -
ansVII
Which is the target area for the inferior alveolar nerve block? - ansmandibular foramen on
medial surface of mandible
Which salivary gland is encapsulated? - ansSublingual
Which type of joint is the temporomandibular? - ansSynovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary
gland secretion? - ansautonomic; 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? -
ansFirst statement is true second statement is false
Which bacterium is most important in causing the progression of carious lesions? -
ansAciduric
Anaerobe bacteria - ansgrow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - anscapsule
Which bacteria grow best in refrigerated conditions? - ansPsychrophils
,HESI Dental Hygiene Exam 2025 – All Actual Questions with
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
Endotoxin is a virulence property of - ansgram-negative bacteria
When comparing viruses to bacteria, viruses - ansenter host cells before they can multiply
Which is treated with nystatin? - ansCandidiasis
Which is detected in the blood within two months after successful immunization with the
hepatitis B vaccine? - ansAnti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination
gloves? - ansI
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and
pharyngitis? - ansStreptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - ansC. Nizoral
Which condition warrants antibiotic premedication? - ansRepaired 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? - ansRenal dialysis shunt
A patient's prescription has the abbreviation "qid" meaning? - anstake medication four times
a day
Which schedule of controlled substance is indicated when a prescription states "NO
REFILLS" - ansschedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
ansCobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the
EXCEPTION? - ansPropranolol (adrenergic blocking agent which reduces high blood
pressure)
Which food is a good source of vitamin K? - ansKale!
;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? - ansAlbuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - ansstatin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps
absorb calcium. - ansBoth 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? - ansSteak, brown rice, and corn
, HESI Dental Hygiene Exam 2025 – All Actual Questions with
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
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? - ansIron
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 - ansintestinal bacteria
Which vitamin is associated with the deficiency beriberi? - ansThiamin
Which is primarily responsible for pharmacologic metabolism? - ansLiver
Which procedure establishes the most definitive diagnosis for oral cancer? - ansScalpel
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? -
ansConcrescence
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 and measures 2mm diameter. The
patient believes it first appeared after accidentally biting the tongue. Which best defines the
lesion? - ansHemangioma
Intraoral lesions may occur with each of the following condition EXCEPT one. Which one is
the EXCEPTION? - ansBasal cell carcinoma
Basal cell carcinoma is a skin tumor often found the face or lips, not the oral cavity.
Which infectious disease is NOT caused by the coxsackievirus? - ansVerruca vulgaris
Verruca vulgaris is an oral wart caused by the human papilloma virus (HPV)
In which region does an early symptom of measles appear? - ansBuccal mucosa
A pregnant woman reports a freely moveable, deep red tissue mass, which extends from the
labial gingival between maxillary right premolars. The surface of the lesion is ulcerated and
bleeds easily. A histologic analysis indicates the lesion is composed of connective tissue,
capillaries, and inflammatory cells. Which best defines the lesion? - ansPyogenic granuloma
A patient's buccal mucosa exhibits tiny white nodules connected by slender raised lines in a
lace-like pattern. This finding is a clinical manifestation of - anslichen plants
The parents of a 7 yr old are concerned by the development a soft, blue, vesicle-like swelling
on the gingiva where tooth #8 is expected to erupt. No significant radiographic findings exist
other than the partial eruption of tooth #8. Which course of action is recommended? - ansNo
treatment is required; the cyst will dissipate naturally.
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
Under which classification of gingival diseases and conditions is puberty-associated
gingivitis found? - ansPlaque-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? - ansAnkyloglossia
When is tooth eruption complete? - ansTooth has made contact with its antagonists in
opposing jaw
When does mixed dentition begin? - ansEruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? - ans20
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. - ansThe first statement is true and
the second is false
Which factor makes aging enamel less susceptible to caries? - ansreduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second
premolar? - ansDistolingual
Which is true regarding the height of contour? - ansGreatest elevation of tooth either
incisocervically or occlusocervically
How many primary and permanent teeth are typically present in an eight yr old child? - ans14
primary; 10 permanent
Which describes the junction of two surfaces of a crown? - ansline angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the
incised edge or angle? - ansIV
Which ridge is a unique characteristic of permanent maxillary molars? - ansOblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -
ansMandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? -
ansVII
Which is the target area for the inferior alveolar nerve block? - ansmandibular foramen on
medial surface of mandible
Which salivary gland is encapsulated? - ansSublingual
Which type of joint is the temporomandibular? - ansSynovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary
gland secretion? - ansautonomic; 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? -
ansFirst statement is true second statement is false
Which bacterium is most important in causing the progression of carious lesions? -
ansAciduric
Anaerobe bacteria - ansgrow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - anscapsule
Which bacteria grow best in refrigerated conditions? - ansPsychrophils
,HESI Dental Hygiene Exam 2025 – All Actual Questions with
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
Endotoxin is a virulence property of - ansgram-negative bacteria
When comparing viruses to bacteria, viruses - ansenter host cells before they can multiply
Which is treated with nystatin? - ansCandidiasis
Which is detected in the blood within two months after successful immunization with the
hepatitis B vaccine? - ansAnti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination
gloves? - ansI
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and
pharyngitis? - ansStreptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - ansC. Nizoral
Which condition warrants antibiotic premedication? - ansRepaired 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? - ansRenal dialysis shunt
A patient's prescription has the abbreviation "qid" meaning? - anstake medication four times
a day
Which schedule of controlled substance is indicated when a prescription states "NO
REFILLS" - ansschedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
ansCobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the
EXCEPTION? - ansPropranolol (adrenergic blocking agent which reduces high blood
pressure)
Which food is a good source of vitamin K? - ansKale!
;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? - ansAlbuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - ansstatin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps
absorb calcium. - ansBoth 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? - ansSteak, brown rice, and corn
, HESI Dental Hygiene Exam 2025 – All Actual Questions with
Verified Answers and Explanations
This document contains the full and most up-to-date collection
of actual HESI Dental Hygiene Exam questions for 2025,
complete with verified correct answers and detailed
explanations. Topics span across oral anatomy, radiology,
periodontics, pharmacology, community dentistry, medical
emergencies, dental ethics, and patient care protocols.
Designed to match the latest HESI testing standards, this A+
graded resource ensures comprehensive coverage and real
exam alignment
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? - ansIron
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 - ansintestinal bacteria
Which vitamin is associated with the deficiency beriberi? - ansThiamin
Which is primarily responsible for pharmacologic metabolism? - ansLiver
Which procedure establishes the most definitive diagnosis for oral cancer? - ansScalpel
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? -
ansConcrescence
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 and measures 2mm diameter. The
patient believes it first appeared after accidentally biting the tongue. Which best defines the
lesion? - ansHemangioma
Intraoral lesions may occur with each of the following condition EXCEPT one. Which one is
the EXCEPTION? - ansBasal cell carcinoma
Basal cell carcinoma is a skin tumor often found the face or lips, not the oral cavity.
Which infectious disease is NOT caused by the coxsackievirus? - ansVerruca vulgaris
Verruca vulgaris is an oral wart caused by the human papilloma virus (HPV)
In which region does an early symptom of measles appear? - ansBuccal mucosa
A pregnant woman reports a freely moveable, deep red tissue mass, which extends from the
labial gingival between maxillary right premolars. The surface of the lesion is ulcerated and
bleeds easily. A histologic analysis indicates the lesion is composed of connective tissue,
capillaries, and inflammatory cells. Which best defines the lesion? - ansPyogenic granuloma
A patient's buccal mucosa exhibits tiny white nodules connected by slender raised lines in a
lace-like pattern. This finding is a clinical manifestation of - anslichen plants
The parents of a 7 yr old are concerned by the development a soft, blue, vesicle-like swelling
on the gingiva where tooth #8 is expected to erupt. No significant radiographic findings exist
other than the partial eruption of tooth #8. Which course of action is recommended? - ansNo
treatment is required; the cyst will dissipate naturally.
