NDHCE – Sample Questions

1. Upon reviewing a client's history, a dental hygienist realizes the client has consistently been receiving unnecessary procedures from their dentist, likely for financial gain. How should the hygienist proceed?

2. A study suggests that a certain type of mouth rinse can potentially neutralize specific oral bacteria more effectively than others. Several patients inquire about shifting exclusively to this product. What is the most appropriate advice?

3. A client without dental insurance declines necessary treatment due to cost. What is the best approach for a dental hygienist advocating for this client's oral health?

4. When using radiographic equipment, what is the best practice to ensure client safety?

5. What is the most appropriate action when you discover a malfunction in the ultrasonic scaler in the middle of debridement?

6. For a dental hygienist researcher studying the relationship between two variables, if the R-squared (R²) value is 0.65, it indicates:

7. In terms of histology, which cells are responsible for producing the organic matrix of bone during bone formation?

8. Which feature primarily differentiates chronic periodontitis from aggressive periodontitis?

9. Which of the following cranial nerves primarily provides sensory innervation to the palate?

10. Which type of candidiasis is typically associated with an erythematous, often painful, mucosal surface?

11. In the context of oral health epidemiology, why is it essential for a dental hygienist to consider socioeconomic status (SES) in their assessment?

12. Which dietary supplement is crucial to monitor due to its potential to interact with prescribed medications and thus influence dental hygiene care planning?

13. In which situation is it most appropriate to delay non-emergency dental hygiene care based on blood pressure readings?

14. While examining the temporomandibular joint (TMJ), a clicking or popping sound is detected. This phenomenon is known as:

15. In a scenario where a client presents with a localized, fluctuant swelling in relation to a maxillary central incisor, why is pulpal testing the most appropriate diagnostic tool to ascertain the vitality of the tooth?

16. Which index may be most relevant when aiming to identify the specific locations of dental caries risk in adult populations?

17. What is the primary reason for a dental hygienist to consider socio-economic factors of the community when planning an oral health promotion event?

18. When using a universal curette, what adaptation technique is critical to ensure safe and effective supragingival scaling?

19. A dental hygienist notices a dark, undefined area on the digital periapical radiograph around the apex of a tooth. What could be the primary reason for this observation?

20. How should a dental hygienist address a teenager's belief that vaping is not harmful and is different from traditional tobacco use?

21. Why is digital radiographic imaging considered the most effective technique in detecting residual subgingival calculus post-scaling during non-surgical periodontal therapy?

22. In the context of pit and fissure sealants, why is it critical to maintain a dry field during application?

23. When advising a patient with persistent aphthous ulcers, which medication is appropriate to recommend for its anti-inflammatory effects?

24. A patient experiences a seizure in the dental chair. After ensuring a clear airway and safety from injury, what is the next step?

25. Which statistical method is most appropriate when analyzing the variance in plaque indices among different age groups within a community program?

26.

Sample Case 1 for questions 26 - 30

A dental hygienist, Rafael, is evaluating new radiographs for Istvan, a 50-year-old patient with a history of inconsistent dental care, smoking, and a recent complaint of discomfort in the upper right quadrant. The radiographs reveal several interproximal caries, a horizontal bone loss, and an impacted upper right third molar with signs of resorption on the adjacent second molar. There is also visible crown margin decay around a previously placed crown on the upper right first molar.

Which finding from the radiographs requires immediate intervention due to its potential for rapid progression and discomfort?

27. Istvan's horizontal bone loss is most commonly associated with:

28. Based on Istvan's dental history and radiographic assessment, which treatment should be prioritized following the management of the impacted third molar?

29. The crown margin decay visible on the radiograph suggests:

30. If a small piece of suture material is accidentally left behind in the tissue, what is the potential risk?

31.

Sample Case 2 for questions 31 - 35

A dental hygienist, Sarah, is examining a patient, James, a 38-year-old male, for periodontal health. James complains of sensitive gums and occasional bleeding while brushing. Upon examination, Sarah notes mild gingival recession and some plaque accumulation near the gumline. James's medical history includes well-controlled asthma and no known allergies. Sarah educates James about the structure and health of the periodontium, emphasizing the importance of proper oral hygiene to prevent further gum recession and potential periodontal disease.

Which component of the periodontium is primarily affected in James's case of gingival recession?

32. What is a common cause of sensitive gums and bleeding during brushing as observed in James?

33. Considering James' asthma, what should Sarah be cautious about during dental procedures?

34. Which of the following is not a direct function of the periodontal ligament in James's case?

35. Given James's well-controlled asthma, what consideration should be made when prescribing a mouthwash?