NDHCE MAIN EXAMINATION 2026 SET QUESTIONS
AND SOLUTIONS RATED A+
✔✔Mrs. Savoie, 70 years old, presents with generalized 4mm clinical attachment loss,
marginal gingival redness, and generalized bleeding on probing. The radiographs reveal
slightly irregular, fuzzy, and radiolucent lamina dura. Widening of the periodontal
ligament space is also apparent. Which of the periodontal staging classifications is most
likely associated with Mrs. Savoie's assessment data?
A. Stage I
B. Stage II
C. Stage III
D. Stage IV - ✔✔B
✔✔Theresa, 18 years old, is a potential participant in a clinical study related to a new
antibacterial dentifrice. Which one of the following actions is most important for the
dental hygienist to take?
A. Inform Theresa that she will be part of the control group.
B. Provide Theresa with all the study protocols.
C. Obtain Theresa's written informed choice.
D. Ask Theresa is she is comfortable with being in the study. - ✔✔C
✔✔Mrs. Denis, 72 years old, attends her yearly DH appointment. She has type 1
diabetes and reports that her blood glucose levels have been unstable in the past 3
months. Mrs, Denis physician is in the process of modifying her insulin regimen to
ensure her blood glucose levels are stable. She also states that she had a joint
replacement surgery a year ago. Is it safe to proceed with dental hygiene treatment at
this appointment for Mrs Denis
A) Yes, because antibiotic premedication is no longer needed after joint replacement.
B) Yes, because she states that her blood glucose levels are stable.
C) No, because her blood glucose levels need to be assessed before any invasive
periodontal debridement.
D) No, because antibiotic premedication may be required for clients with uncontrolled
diabetes after joint replacement. - ✔✔D
✔✔When designing a community-based program, why is it important to plan the
evaluation phase?
A. To facilitate accurate conclusions.
B. To increase the cost-benefit ratio.
C. To produce qualitative data.
, D. To improve time management. - ✔✔A
✔✔Ms. May, 32 years old, is interested in learning how to properly care for her dental
implants that replace teeth 33 to 43. What strategy would be most important for Ms.
May to learn to prevent peri-implantitis?
A. Daily use of a chlorhexidine mouthrinse.
B. Twice daily home irrigation.
C. Thorough dental biofilm removal.
D. Use of a powered toothbrush. - ✔✔C
✔✔What action must be taken in order to maintain proper adaptation of the instrument
blade when debriding the distobuccal line angle of tooth 37?
A. Use a vertical rocking motion.
B. Roll the handle.
C. Close the angle of the blade.
D. Apply a horizontal stroke. - ✔✔B
✔✔How should the dental hygienist avoid the technique error evident on the following
bitewing radiograph?
A. increase the vertical angulation of the positioning indicating device.
B. Change the horizontal angulation of the positioning indicating device.
C. Move the film more toward the midline.
D. Alight the position indicating device with the centre of the film. - ✔✔D
✔✔Joanna, 17 years old, is diagnosed with necrotizing ulcerative periodontitis. She
receives periodontal debridement and oral self-care instructions on her first of several
appointments scheduled. What mouth rinse should the dental hygienist recommend
Joanna use for 3 days following the first treatment rendered?
A. Sodium bicarbonate.
B. Diluted hydrogen peroxide.
C. Hypertonic saline.
D. Sodium fluoride. - ✔✔B
✔✔Mr. Mandel, 74 years old, requires a complete lower denture. he is worried because
he overheard the dentist's concern about seating the mandibular dental impression tray.
Mr. Mandel asks the dental hygienist about the dentist's concern. Which one of the
following factors should the dental hygienist assess prior to answering Mr. Mandel's
question?
A. Pathological deposits such as sialoliths.
B. Hard tissue manifestations such as mandibular tori.
AND SOLUTIONS RATED A+
✔✔Mrs. Savoie, 70 years old, presents with generalized 4mm clinical attachment loss,
marginal gingival redness, and generalized bleeding on probing. The radiographs reveal
slightly irregular, fuzzy, and radiolucent lamina dura. Widening of the periodontal
ligament space is also apparent. Which of the periodontal staging classifications is most
likely associated with Mrs. Savoie's assessment data?
A. Stage I
B. Stage II
C. Stage III
D. Stage IV - ✔✔B
✔✔Theresa, 18 years old, is a potential participant in a clinical study related to a new
antibacterial dentifrice. Which one of the following actions is most important for the
dental hygienist to take?
A. Inform Theresa that she will be part of the control group.
B. Provide Theresa with all the study protocols.
C. Obtain Theresa's written informed choice.
D. Ask Theresa is she is comfortable with being in the study. - ✔✔C
✔✔Mrs. Denis, 72 years old, attends her yearly DH appointment. She has type 1
diabetes and reports that her blood glucose levels have been unstable in the past 3
months. Mrs, Denis physician is in the process of modifying her insulin regimen to
ensure her blood glucose levels are stable. She also states that she had a joint
replacement surgery a year ago. Is it safe to proceed with dental hygiene treatment at
this appointment for Mrs Denis
A) Yes, because antibiotic premedication is no longer needed after joint replacement.
B) Yes, because she states that her blood glucose levels are stable.
C) No, because her blood glucose levels need to be assessed before any invasive
periodontal debridement.
D) No, because antibiotic premedication may be required for clients with uncontrolled
diabetes after joint replacement. - ✔✔D
✔✔When designing a community-based program, why is it important to plan the
evaluation phase?
A. To facilitate accurate conclusions.
B. To increase the cost-benefit ratio.
C. To produce qualitative data.
, D. To improve time management. - ✔✔A
✔✔Ms. May, 32 years old, is interested in learning how to properly care for her dental
implants that replace teeth 33 to 43. What strategy would be most important for Ms.
May to learn to prevent peri-implantitis?
A. Daily use of a chlorhexidine mouthrinse.
B. Twice daily home irrigation.
C. Thorough dental biofilm removal.
D. Use of a powered toothbrush. - ✔✔C
✔✔What action must be taken in order to maintain proper adaptation of the instrument
blade when debriding the distobuccal line angle of tooth 37?
A. Use a vertical rocking motion.
B. Roll the handle.
C. Close the angle of the blade.
D. Apply a horizontal stroke. - ✔✔B
✔✔How should the dental hygienist avoid the technique error evident on the following
bitewing radiograph?
A. increase the vertical angulation of the positioning indicating device.
B. Change the horizontal angulation of the positioning indicating device.
C. Move the film more toward the midline.
D. Alight the position indicating device with the centre of the film. - ✔✔D
✔✔Joanna, 17 years old, is diagnosed with necrotizing ulcerative periodontitis. She
receives periodontal debridement and oral self-care instructions on her first of several
appointments scheduled. What mouth rinse should the dental hygienist recommend
Joanna use for 3 days following the first treatment rendered?
A. Sodium bicarbonate.
B. Diluted hydrogen peroxide.
C. Hypertonic saline.
D. Sodium fluoride. - ✔✔B
✔✔Mr. Mandel, 74 years old, requires a complete lower denture. he is worried because
he overheard the dentist's concern about seating the mandibular dental impression tray.
Mr. Mandel asks the dental hygienist about the dentist's concern. Which one of the
following factors should the dental hygienist assess prior to answering Mr. Mandel's
question?
A. Pathological deposits such as sialoliths.
B. Hard tissue manifestations such as mandibular tori.
