HESI Dental Hygiene Exam questions with
verified answers
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 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 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
verified answers
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 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 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
