NDHCB Exam with All Correct & 100% Verified
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A dental hygienist has been asked to provide information to clients about a new tooth whitening
procedure. The dental hygienist did not study this procedure at school. Which of the following
sources of information should the dental hygienist consult before providing information to
clients about this procedure?
A. The employer regarding the new technique
B. Reports of randomized controlled trials
C. Colleagues regarding technique and efficacy
D. Dental supply companies regarding product available ✔Correct Answer-Reports of
randomized controlled trials
Mrs. Sandhu, 58 years old, is a recent immigrant. She does not speak english or french;
however, she is accompanied by an interpreter for assessment and treatment planning. At the
follow-up appointment, Mrs. Sandhu arrives alone. During periodontal debridement, the dental
hygienist determines that Mrs. Sandhu needs local anesthetic. What should the dental hygienist
do next?
A. Explain the action of local anesthetic using gestures
B. Have the interpreter explain the procedure by telephone
C. Use pictures to explain the need for this procedure
D. Proceed with the treatment without the local anesthetic ✔Correct Answer-Have the
interpreter explain the procedure by telephone
Following a client's appointment, the dental hygienist is preparing the operatory for the next
client. What is the recommended minimum time that water should be run through the water
lines before the next appointment?
A. 20 seconds
B. 60 seconds
C. 90 seconds
D. 120 seconds ✔Correct Answer-20 seconds
Mr. Kehoe, a 24 year old informs the dental hygienist that the reason he missed his previous
periodontal debridement appointment was due to a fear of being hurt. Today, he appears
anxious. Clinical findings who dental biofilm- induced gingivitis localized to the papillae with
light interproximal calculus. What is the best action for the dental hygienist to take next?
A. Encourage him to express his concerns regarding today's appt.
B. Complete his periodontal debridement during one session
C. Suggest that he consider using an anti-anxiety medication
,D. Advise that some discomfort is possible and topical anesthetic can be used if necessary
✔Correct Answer-Encourage him to express his concerns regarding today's appt
Mr. Ungle, 35 years old, presents for his continuing care appointment. The dental hygienist
records generalized posterior periodontal probing depths of 5-6mm. He reports some sensitivity
on the max left quad. What radiographic views would be most appropriate to take to assess this
area?
A. 4 vertical bitewings
B. 4 horizontal bitewings
C. 2 vertical bitewings
D. 2 horizontal bitewings ✔Correct Answer-4 vertical bitewings
Which one of the following factors is most reliable indicator that oral self-care procedures are
effective?
A. Reduction of dental biofilm
B. Change in tissue color
C. No signs of gingival inflammation
D. Absence of calculus ✔Correct Answer-No signs of gingival infammation
Who would benefit more from shorter continuing care appointments?
A. A client who just completed tobacco use cessation program
B. A client who is starting an at-home whitening program
C. A client with recently diagnosed type 2 diabetes
D. A client with a diagnosis of hyperthyroidism ✔Correct Answer-A client with recently
diagnosed type 2 diabetes
Joey, 11 years old, needs LA for periodontal debridement in Q3. The procedures will take
approximately 30 minutes to complete once anesthetized. What anesthetic agent and
injection(s) would be ideal for this situation?
A. Mepivicaine 3% and the inferior alveolar nerve block, the lingual and long buccal nerve
injections
B. Lidocaine 2% and buccal infiltration(s)
C. Articaine 4% with epinephrine 1:200,000 and the inferior alveolar nerve block and long
buccal nerve injections
D. Prilocaine 4% with epinephrine 1:200,000 and the inferior alveolar nerve block and long
buccal nerve injections ✔Correct Answer-Mepivicaine (Carbocaine, Polocaine) 3% and the
inferior alveolar nerve block, the lingual and long buccal nerve injections
Don, an 18-year-old athlete, has been taking penicillin for pericoronitis of tooth 38. He presents
for repair of a clasp on an ill-fitting maxillary partial denture. Don reports a metallic taste and a
burning sensation in the palatal area. The clinical assessment reveals a lesion under the partial
denture. There is a white, curd-like material with underlying erythematous mucosa. What
condition should the dental hygienist suspect?
A. Denture stomatitis
,B. Erosive lichen planus
C. Necrotizing periodontitis
D. Pseudomembranous candidiasis ✔Correct Answer-Pseudomembranous Candidiasis
Ms. Katerinova, 32 years old, has recently received local anesthetic for periodontal debridement
by the dental hygienist.
She reports pain and some difficulty opening her mouth the day after treatment. What post
care recommendations should the dental hygienist consider?
A. Heat therapy, warm saline mouth rinse and analgesics
B. Cold therapy, antimicrobial mouth rinse and analgesics
C. Antibiotic therapy and warm saline rinses
D. Analgesics and referral for physiotherapy ✔Correct Answer-Heat therapy, warm saline
mouth rinses and analgesics
Which one of the following oral microorganisms may overgrow with the use of broad-spectrum
antibiotics?
A. Porphyromonas gingivalis.
B. Streptoccocus mutans.
C. Actinomyces viscosus.
D. Candida albicans. ✔Correct Answer-Candida albicans.
The periodontal assessment of Mr. Stevens, 30 years, includes a dental biofilm score of 60%, a
BOP score of 30% and generalized clinical attachment loss of 3 mm with no gingival recession.
The radiographs indicate generalized horizontal bone that account for a % of bone loss/age of
0.20. What is Mr. Stevens's periodontal classification?
A. Generalized periodontitis stage I, grade B
B. Generalized periodontitis stage III, grade B
C. Generalized dental biofilm-induced gingivitis on an intact periodontium
D. Generalized periodontitis stage II, grade A ✔Correct Answer-Generalized periodontitis
stage II, grade A
Mrs. Ridley, 81 years old, is now living with her daughter's family. When she presents for her 9-
month continuing care appointment, she appears withdrawn and anxious even though she has
been a longstanding client in the practice. During the intraoral assessment, the dental hygienist
notes poor oral hygiene, a fractured upper denture, and bruising of the edentulous ridge. What
should the dental hygienist suspect?
A. Iron deficiency
B. Dementia
C. Self-neglect
D. Elder abuse ✔Correct Answer-Elder abuse
Mr. Applebaum, 29 years old, presents for his annual continuing care appointment. He reports
extreme sensitivity to cold in the mandibular right quadrant. Intraoral findings reveal localized
, gingival recession of 4 mm on teeth 43 and 44. What should the dental hygienist recommend
for Mr. Applebaum?
A. Acidulated phosphate fluoride
B. Fluoride varnish
C. Composite restorations
D. Gingival graft ✔Correct Answer-Fluoride varnish
Which one of the following design features provides the best tactile sensitivity in a hand
instrument?
A. Long functional shank
B. Serrated handle texture
C. Paired working ends
D. Hallow handle ✔Correct Answer-Hallow handle
Which one of the following statements about the clinical significance of calculus is true?
A. The surface texture of subgingival calculus causes gingivitis
B. Lactobacillus microorganisms are essential for the formation of calculus
C. The correlation between dental biofilm and gingivitis is much stronger than the correlation
between calculus and gingivitis.
D. When calculus becomes embedded in the connective tissue, it results in an inflammatory
resonse ✔Correct Answer-The correlation between dental biofilm and gingivitis is much
stronger than the correlation between calculus and gingivitis.
Mrs. Savage, 73 years old, presents for her 6-month continuing care appointment. She presents
with generalized periodontitis stage II grade B, generalized gingival recession of 2 mm on the
facial surfaces of sextant 5 and porcelain crowns on teeth 13 to 23. The dental hygienist notices
the presence of carious lesions on the roots of the maxillary premolars. What fluoride agent
should the dental hygienist select for Mrs. Savage?
A. Acidulated phosphate fluoride gel
B. Sodium monofluorophosphate dentifrice
C. Stannous fluoride solution
D. Sodium fluoride varnish ✔Correct Answer-Sodium fluoride varnish
Shamir, 17 years old, has uncontrolled type 1 diabetes. In spite of good oral self care, Shamir is
at increased risk for dental caries. What is the best explanation for this conclusion?
A. A wide fluctuation in blood glucose levels
B. A high carbohydrate diet to control hypoglycemia
C. A reduction in phagocytic activity due to hyperglycermia
D. A reduction in salivary flow due to fluid loss. ✔Correct Answer-A reduction in salivary flow
due to fluid loss.
Mr. Roznowski, 33 years old, has multiple sclerosis. He is now living with his mother and is
unhappy with his loss of autonomy. How should the dental hygienist proceed?
A. Assist with only his dental hygiene needs
Answers |Actual Complete Exam |Already Graded
A+ (Just Released)
A dental hygienist has been asked to provide information to clients about a new tooth whitening
procedure. The dental hygienist did not study this procedure at school. Which of the following
sources of information should the dental hygienist consult before providing information to
clients about this procedure?
A. The employer regarding the new technique
B. Reports of randomized controlled trials
C. Colleagues regarding technique and efficacy
D. Dental supply companies regarding product available ✔Correct Answer-Reports of
randomized controlled trials
Mrs. Sandhu, 58 years old, is a recent immigrant. She does not speak english or french;
however, she is accompanied by an interpreter for assessment and treatment planning. At the
follow-up appointment, Mrs. Sandhu arrives alone. During periodontal debridement, the dental
hygienist determines that Mrs. Sandhu needs local anesthetic. What should the dental hygienist
do next?
A. Explain the action of local anesthetic using gestures
B. Have the interpreter explain the procedure by telephone
C. Use pictures to explain the need for this procedure
D. Proceed with the treatment without the local anesthetic ✔Correct Answer-Have the
interpreter explain the procedure by telephone
Following a client's appointment, the dental hygienist is preparing the operatory for the next
client. What is the recommended minimum time that water should be run through the water
lines before the next appointment?
A. 20 seconds
B. 60 seconds
C. 90 seconds
D. 120 seconds ✔Correct Answer-20 seconds
Mr. Kehoe, a 24 year old informs the dental hygienist that the reason he missed his previous
periodontal debridement appointment was due to a fear of being hurt. Today, he appears
anxious. Clinical findings who dental biofilm- induced gingivitis localized to the papillae with
light interproximal calculus. What is the best action for the dental hygienist to take next?
A. Encourage him to express his concerns regarding today's appt.
B. Complete his periodontal debridement during one session
C. Suggest that he consider using an anti-anxiety medication
,D. Advise that some discomfort is possible and topical anesthetic can be used if necessary
✔Correct Answer-Encourage him to express his concerns regarding today's appt
Mr. Ungle, 35 years old, presents for his continuing care appointment. The dental hygienist
records generalized posterior periodontal probing depths of 5-6mm. He reports some sensitivity
on the max left quad. What radiographic views would be most appropriate to take to assess this
area?
A. 4 vertical bitewings
B. 4 horizontal bitewings
C. 2 vertical bitewings
D. 2 horizontal bitewings ✔Correct Answer-4 vertical bitewings
Which one of the following factors is most reliable indicator that oral self-care procedures are
effective?
A. Reduction of dental biofilm
B. Change in tissue color
C. No signs of gingival inflammation
D. Absence of calculus ✔Correct Answer-No signs of gingival infammation
Who would benefit more from shorter continuing care appointments?
A. A client who just completed tobacco use cessation program
B. A client who is starting an at-home whitening program
C. A client with recently diagnosed type 2 diabetes
D. A client with a diagnosis of hyperthyroidism ✔Correct Answer-A client with recently
diagnosed type 2 diabetes
Joey, 11 years old, needs LA for periodontal debridement in Q3. The procedures will take
approximately 30 minutes to complete once anesthetized. What anesthetic agent and
injection(s) would be ideal for this situation?
A. Mepivicaine 3% and the inferior alveolar nerve block, the lingual and long buccal nerve
injections
B. Lidocaine 2% and buccal infiltration(s)
C. Articaine 4% with epinephrine 1:200,000 and the inferior alveolar nerve block and long
buccal nerve injections
D. Prilocaine 4% with epinephrine 1:200,000 and the inferior alveolar nerve block and long
buccal nerve injections ✔Correct Answer-Mepivicaine (Carbocaine, Polocaine) 3% and the
inferior alveolar nerve block, the lingual and long buccal nerve injections
Don, an 18-year-old athlete, has been taking penicillin for pericoronitis of tooth 38. He presents
for repair of a clasp on an ill-fitting maxillary partial denture. Don reports a metallic taste and a
burning sensation in the palatal area. The clinical assessment reveals a lesion under the partial
denture. There is a white, curd-like material with underlying erythematous mucosa. What
condition should the dental hygienist suspect?
A. Denture stomatitis
,B. Erosive lichen planus
C. Necrotizing periodontitis
D. Pseudomembranous candidiasis ✔Correct Answer-Pseudomembranous Candidiasis
Ms. Katerinova, 32 years old, has recently received local anesthetic for periodontal debridement
by the dental hygienist.
She reports pain and some difficulty opening her mouth the day after treatment. What post
care recommendations should the dental hygienist consider?
A. Heat therapy, warm saline mouth rinse and analgesics
B. Cold therapy, antimicrobial mouth rinse and analgesics
C. Antibiotic therapy and warm saline rinses
D. Analgesics and referral for physiotherapy ✔Correct Answer-Heat therapy, warm saline
mouth rinses and analgesics
Which one of the following oral microorganisms may overgrow with the use of broad-spectrum
antibiotics?
A. Porphyromonas gingivalis.
B. Streptoccocus mutans.
C. Actinomyces viscosus.
D. Candida albicans. ✔Correct Answer-Candida albicans.
The periodontal assessment of Mr. Stevens, 30 years, includes a dental biofilm score of 60%, a
BOP score of 30% and generalized clinical attachment loss of 3 mm with no gingival recession.
The radiographs indicate generalized horizontal bone that account for a % of bone loss/age of
0.20. What is Mr. Stevens's periodontal classification?
A. Generalized periodontitis stage I, grade B
B. Generalized periodontitis stage III, grade B
C. Generalized dental biofilm-induced gingivitis on an intact periodontium
D. Generalized periodontitis stage II, grade A ✔Correct Answer-Generalized periodontitis
stage II, grade A
Mrs. Ridley, 81 years old, is now living with her daughter's family. When she presents for her 9-
month continuing care appointment, she appears withdrawn and anxious even though she has
been a longstanding client in the practice. During the intraoral assessment, the dental hygienist
notes poor oral hygiene, a fractured upper denture, and bruising of the edentulous ridge. What
should the dental hygienist suspect?
A. Iron deficiency
B. Dementia
C. Self-neglect
D. Elder abuse ✔Correct Answer-Elder abuse
Mr. Applebaum, 29 years old, presents for his annual continuing care appointment. He reports
extreme sensitivity to cold in the mandibular right quadrant. Intraoral findings reveal localized
, gingival recession of 4 mm on teeth 43 and 44. What should the dental hygienist recommend
for Mr. Applebaum?
A. Acidulated phosphate fluoride
B. Fluoride varnish
C. Composite restorations
D. Gingival graft ✔Correct Answer-Fluoride varnish
Which one of the following design features provides the best tactile sensitivity in a hand
instrument?
A. Long functional shank
B. Serrated handle texture
C. Paired working ends
D. Hallow handle ✔Correct Answer-Hallow handle
Which one of the following statements about the clinical significance of calculus is true?
A. The surface texture of subgingival calculus causes gingivitis
B. Lactobacillus microorganisms are essential for the formation of calculus
C. The correlation between dental biofilm and gingivitis is much stronger than the correlation
between calculus and gingivitis.
D. When calculus becomes embedded in the connective tissue, it results in an inflammatory
resonse ✔Correct Answer-The correlation between dental biofilm and gingivitis is much
stronger than the correlation between calculus and gingivitis.
Mrs. Savage, 73 years old, presents for her 6-month continuing care appointment. She presents
with generalized periodontitis stage II grade B, generalized gingival recession of 2 mm on the
facial surfaces of sextant 5 and porcelain crowns on teeth 13 to 23. The dental hygienist notices
the presence of carious lesions on the roots of the maxillary premolars. What fluoride agent
should the dental hygienist select for Mrs. Savage?
A. Acidulated phosphate fluoride gel
B. Sodium monofluorophosphate dentifrice
C. Stannous fluoride solution
D. Sodium fluoride varnish ✔Correct Answer-Sodium fluoride varnish
Shamir, 17 years old, has uncontrolled type 1 diabetes. In spite of good oral self care, Shamir is
at increased risk for dental caries. What is the best explanation for this conclusion?
A. A wide fluctuation in blood glucose levels
B. A high carbohydrate diet to control hypoglycemia
C. A reduction in phagocytic activity due to hyperglycermia
D. A reduction in salivary flow due to fluid loss. ✔Correct Answer-A reduction in salivary flow
due to fluid loss.
Mr. Roznowski, 33 years old, has multiple sclerosis. He is now living with his mother and is
unhappy with his loss of autonomy. How should the dental hygienist proceed?
A. Assist with only his dental hygiene needs
