HESI Dental Hygiene /NBDHE Dental
Hygienist (2026) EXAM QUESTIONS AND
ALL CORRECT ANSWERS 100% SOLVED
(Grade A+) Latest UPDATED 2026
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found? -
CORRECT ANSWERS- 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 ANSWERS- Ankyloglossia
When is tooth eruption complete? -CORRECT ANSWERS- Tooth has made contact with its antagonists in
opposing jaw
When does mixed dentition begin? -CORRECT ANSWERS- Eruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? -CORRECT ANSWERS- 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 ANSWERS- The first statement is true and the
second is false
Which factor makes aging enamel less susceptible to caries? -CORRECT ANSWERS- reduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar? -
CORRECT ANSWERS- Distolingual
Which is true regarding the height of contour? -CORRECT ANSWERS- Greatest elevation of tooth either
incisocervically or occlusocervically
,How many primary and permanent teeth are typically present in an eight yr old child? -CORRECT
ANSWERS- 14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? -CORRECT ANSWERS- line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? -CORRECT ANSWERS- IV
Which ridge is a unique characteristic of permanent maxillary molars? -CORRECT ANSWERS- Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -CORRECT ANSWERS-
Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? -CORRECT
ANSWERS- VII
Which is the target area for the inferior alveolar nerve block? -CORRECT ANSWERS- mandibular foramen
on medial surface of mandible
Which salivary gland is encapsulated? -CORRECT ANSWERS- Sublingual
Which type of joint is the temporomandibular? -CORRECT ANSWERS- Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary gland
secretion? -CORRECT ANSWERS- 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 ANSWERS- First
statement is true second statement is false
Which bacterium is most important in causing the progression of carious lesions? -CORRECT ANSWERS-
Aciduric
, Anaerobe bacteria -CORRECT ANSWERS- grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? -CORRECT ANSWERS- capsule
Which bacteria grow best in refrigerated conditions? -CORRECT ANSWERS- Psychrophils
Endotoxin is a virulence property of -CORRECT ANSWERS- gram-negative bacteria
When comparing viruses to bacteria, viruses -CORRECT ANSWERS- enter host cells before they can
multiply
Which is treated with nystatin? -CORRECT ANSWERS- Candidiasis
Which is detected in the blood within two months after successful immunization with the hepatitis B
vaccine? -CORRECT ANSWERS- Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination gloves? -
CORRECT ANSWERS- I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and pharyngitis? -
CORRECT ANSWERS- Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin -CORRECT ANSWERS- C. Nizoral
Hygienist (2026) EXAM QUESTIONS AND
ALL CORRECT ANSWERS 100% SOLVED
(Grade A+) Latest UPDATED 2026
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found? -
CORRECT ANSWERS- 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 ANSWERS- Ankyloglossia
When is tooth eruption complete? -CORRECT ANSWERS- Tooth has made contact with its antagonists in
opposing jaw
When does mixed dentition begin? -CORRECT ANSWERS- Eruption of first permanent tooth
How many succedaneous teeth are in permanent dentition? -CORRECT ANSWERS- 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 ANSWERS- The first statement is true and the
second is false
Which factor makes aging enamel less susceptible to caries? -CORRECT ANSWERS- reduced permeability
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar? -
CORRECT ANSWERS- Distolingual
Which is true regarding the height of contour? -CORRECT ANSWERS- Greatest elevation of tooth either
incisocervically or occlusocervically
,How many primary and permanent teeth are typically present in an eight yr old child? -CORRECT
ANSWERS- 14 primary; 10 permanent
Which describes the junction of two surfaces of a crown? -CORRECT ANSWERS- line angle
Which G.V. Black classification involves the proximal surfaces of anterior teeth including the incised
edge or angle? -CORRECT ANSWERS- IV
Which ridge is a unique characteristic of permanent maxillary molars? -CORRECT ANSWERS- Oblique
Which division of the fifth cranial nerve innervates the temporomandibular joint? -CORRECT ANSWERS-
Mandibular
Facial paralysis can result from damage to the motor neurons of which cranial nerve? -CORRECT
ANSWERS- VII
Which is the target area for the inferior alveolar nerve block? -CORRECT ANSWERS- mandibular foramen
on medial surface of mandible
Which salivary gland is encapsulated? -CORRECT ANSWERS- Sublingual
Which type of joint is the temporomandibular? -CORRECT ANSWERS- Synovial
Which peripheral nervous system and subdivision are responsible for a shutdown of salivary gland
secretion? -CORRECT ANSWERS- 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 ANSWERS- First
statement is true second statement is false
Which bacterium is most important in causing the progression of carious lesions? -CORRECT ANSWERS-
Aciduric
, Anaerobe bacteria -CORRECT ANSWERS- grow only in the absence of oxygen
Which bacterial structure interferes with phagocytosis? -CORRECT ANSWERS- capsule
Which bacteria grow best in refrigerated conditions? -CORRECT ANSWERS- Psychrophils
Endotoxin is a virulence property of -CORRECT ANSWERS- gram-negative bacteria
When comparing viruses to bacteria, viruses -CORRECT ANSWERS- enter host cells before they can
multiply
Which is treated with nystatin? -CORRECT ANSWERS- Candidiasis
Which is detected in the blood within two months after successful immunization with the hepatitis B
vaccine? -CORRECT ANSWERS- Anti-HBs
Which hypersensitivity reaction is an allergy to the natural rubber latex in examination gloves? -
CORRECT ANSWERS- I
Which bacterial genus contains species that cause pneumatic fever, scarlet fever, and pharyngitis? -
CORRECT ANSWERS- Streptococcus
Each of the following is an antituberculin agent EXCEPT one. Which is the EXCEPTION?
A. Ethambutol
B. Isoniazid
C. Nizoral
D. Rifampin -CORRECT ANSWERS- C. Nizoral
