HESI Dental Hygiene Scientific Basis
UPDATED ACTUAL Questions and
CORRECT Answers
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found?
A. Non-plaque Induced Gingival Manifestations by Traumatic Lesions.
B. Non-plaque Induced Gingival Diseases of Viral Origin.
C. Plaque Induced Gingival Diseases Modified by Medications.
D. Plaque-Induced Gingival Diseases Modified by Systemic Factors. - CORRECT ANSWER -D.
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?
A. Hemifacial hyperplasia.
B. Macroglossia.
C. Beckwith-Wiedemann syndrome.
D. Ankyloglossia. - CORRECT ANSWER -D. Ankyloglossia.
When is tooth eruption complete?
A. Tooth has made contact with its antagonist(s) in opposing jaw.
B. Root is completely covered with cementum.
C. Root formation is complete.
D. Crown is complete and emerges from alveolar gingiva. - CORRECT ANSWER -A. Tooth has
made contact with its antagonist(s) in opposing jaw.
When does the mixed dentition begin?
A. Eruption of first primary tooth.
B. Shedding of first primary tooth.
C. Shedding of last primary tooth.
, D. Eruption of first permanent tooth. - CORRECT ANSWER -D. Eruption of first permanent tooth.
Which is the number of successional (succedaneous) teeth in the permanent dentition?
A. 20
B. 32
C. 12
D. 8 - CORRECT ANSWER -A. 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.
A. Both statements are false.
B. The first statement is false and the second is true.
C. The first statement is true and the second is false.
D. Both statements are true. - CORRECT ANSWER -C. The first statement is true and the second
is false.
Which factor makes aging enamel less susceptible to caries?
A. Reduced permeability.
B. Decreased fluoride content.
C. Discoloration.
D. Regeneration. - CORRECT ANSWER -A. Reduced permeability.
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar?
A. Central.
B. Buccal.
C. Distolingual.
D. Mesial. - CORRECT ANSWER -C. Distolingual.
Which is true regarding the height of contour of a tooth?
UPDATED ACTUAL Questions and
CORRECT Answers
Under which classification of gingival diseases and conditions is puberty-associated gingivitis found?
A. Non-plaque Induced Gingival Manifestations by Traumatic Lesions.
B. Non-plaque Induced Gingival Diseases of Viral Origin.
C. Plaque Induced Gingival Diseases Modified by Medications.
D. Plaque-Induced Gingival Diseases Modified by Systemic Factors. - CORRECT ANSWER -D.
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?
A. Hemifacial hyperplasia.
B. Macroglossia.
C. Beckwith-Wiedemann syndrome.
D. Ankyloglossia. - CORRECT ANSWER -D. Ankyloglossia.
When is tooth eruption complete?
A. Tooth has made contact with its antagonist(s) in opposing jaw.
B. Root is completely covered with cementum.
C. Root formation is complete.
D. Crown is complete and emerges from alveolar gingiva. - CORRECT ANSWER -A. Tooth has
made contact with its antagonist(s) in opposing jaw.
When does the mixed dentition begin?
A. Eruption of first primary tooth.
B. Shedding of first primary tooth.
C. Shedding of last primary tooth.
, D. Eruption of first permanent tooth. - CORRECT ANSWER -D. Eruption of first permanent tooth.
Which is the number of successional (succedaneous) teeth in the permanent dentition?
A. 20
B. 32
C. 12
D. 8 - CORRECT ANSWER -A. 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.
A. Both statements are false.
B. The first statement is false and the second is true.
C. The first statement is true and the second is false.
D. Both statements are true. - CORRECT ANSWER -C. The first statement is true and the second
is false.
Which factor makes aging enamel less susceptible to caries?
A. Reduced permeability.
B. Decreased fluoride content.
C. Discoloration.
D. Regeneration. - CORRECT ANSWER -A. Reduced permeability.
Which groove is the most identifying characteristic of a three-cusp mandibular second premolar?
A. Central.
B. Buccal.
C. Distolingual.
D. Mesial. - CORRECT ANSWER -C. Distolingual.
Which is true regarding the height of contour of a tooth?
