HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
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
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
,HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? - (ANSWER)IV
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
Anaerobe bacteria - (ANSWER)grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - (ANSWER)capsule
,HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
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?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - (ANSWER)C. Nizoral
Which condition warrants antibiotic premedication? - (ANSWER)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? -
(ANSWER)Renal dialysis shunt
, HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
A patient's prescription has the abbreviation "qid" meaning? - (ANSWER)take medication four times a
day
Which schedule of controlled substance is indicated when a prescription states "NO REFILLS" -
(ANSWER)schedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
(ANSWER)Cobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the EXCEPTION? -
(ANSWER)Propranolol (adrenergic blocking agent which reduces high blood pressure)
Which food is a good source of vitamin K? - (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? - (ANSWER)Albuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - (ANSWER)statin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps absorb
calcium. - (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? - (ANSWER)Steak, brown rice, and corn
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
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
,HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? - (ANSWER)IV
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
Anaerobe bacteria - (ANSWER)grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? - (ANSWER)capsule
,HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
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?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin - (ANSWER)C. Nizoral
Which condition warrants antibiotic premedication? - (ANSWER)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? -
(ANSWER)Renal dialysis shunt
, HESI DENTAL HYGIENE EXAM QUESTIONS AND ANSWERS 2025
A patient's prescription has the abbreviation "qid" meaning? - (ANSWER)take medication four times a
day
Which schedule of controlled substance is indicated when a prescription states "NO REFILLS" -
(ANSWER)schedule II controlled substance
Which vitamin deficiency results from long-term recreational abuse of nitrous oxide? -
(ANSWER)Cobalamin (vitamin B-12)
Each of the following is a calcium blocking agent EXCEPT one. Which one is the EXCEPTION? -
(ANSWER)Propranolol (adrenergic blocking agent which reduces high blood pressure)
Which food is a good source of vitamin K? - (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? - (ANSWER)Albuterol
short acting bronchodilator results in an immediate response to an acute asthma attack
Lipitor is a/an - (ANSWER)statin
(lowers cholesterol levels)
Consuming foods high in retinol will help prevent night blindness because vitamin D helps absorb
calcium. - (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? - (ANSWER)Steak, brown rice, and corn
