National Board Dental Hygiene Exam (NBDHE) Guide 2025: Study Plan & Practice Test

age 1 of 20




NBDHE – National Board Dental Hygiene Examination

STUDY GUIDE 2025/2026 COMPREHENSIVE

QUESTIONS WITH VERIFIED CORRECT ANSWERS ||

ALREADY GRADED A+ <BRAND NEW VERSION>

Each of the following oral microorganisms could col- onize soft

tissue EXCEPT one. Which one is this EXCEPTION?


A. Neisseria sicca


B. Candida albicans


C. Streprococcus mitis


D. Streptococcus mutans


E. Streprococcus salivarius .......Answer.........D

,age 2 of 20




The virus responsible for which of the following dis- eases is the

MOST resistant to chemical and physical agents?


A. AIDS


B. Herpes


C. Measles


D. Influenza


E. Hepatitis .......Answer.........E


Root hypersensitivity diminishes as the tooth forms which of the

following?


A. Mantle dentin


B. Secondary de'ntin


C. Cellular cementum

, age 3 of 20




D. Acellular cementum .......Answer.........C


A 21-year-old woman, who is in her third trimester of

pregnancy, has a pyogenic granuloma (3 nun in diam-eter)

between her maxillary left lateral incisor and canine. After

offering oral hygiene instructions, which of the following should

be the NEXT step?


A. Perform an oral prophylaxis.


B. Suggest that the patient see a periodontist.


C. Refer the patient for an excision of the granu-


loma.


D. Allow hormonal influences to subside, and


then reappoint the patient for a prophylaxis