NDAEB Theory Exam study guide
NDAEB Theory Exam · Work through your exam, one topic at a time.
The NDAEB Theory Exam is the written component of the national certification process administered by the National Dental Assisting Examining Board, an independent board established on November 15, 1997, when responsibility for the national dental assisting examination was transferred from the Canadian Dental Assistants' Association. The exam is intended for dental assisting students and graduates of both registered and non-registered programs who need the NDAEB certificate, a one-time acquisition that does not require annual renewal. The NDAEB Theory Exam study guide has 12 sections and about 3,455 words.
01Chairside Dental Assisting (Level I)
Chairside assisting is built on anticipation, not reaction. Know the sequence of a basic restorative appointment: greeting and medical-history review, operatory set-up, seating and positioning, instrument transfer, isolation, evacuation, and post-operative clean-up.
318 words, about 2 min02Exposes Dental Radiographs
Radiography questions test three things: patient protection, image quality, and legal/ethical boundaries. Know that the operating dentist holds responsibility for prescribing radiographs, while the assistant exposes them under direct supervision where permitted.
333 words, about 2 min03Provides Oral Hygiene Instruction
Oral hygiene instruction is a communication skill as much as a clinical one. The exam tests whether you can assess, individualize, demonstrate, and follow up.
309 words, about 2 min04Provides Nutritional Counseling Relative to Oral Health
Nutritional counseling in dentistry centers on how often fermentable carbohydrates contact teeth, not only how much. Bacteria metabolize sugars and produce acid that drops plaque pH below the critical level, demineralizing enamel.
309 words, about 2 min05Applies and Removes Dental Dam
The dental dam provides a dry, clean, isolated field, protects the patient from aspiration or swallowing of debris and materials, and retracts soft tissue. Know the armamentarium: dam material, punch, clamp and forceps, frame, floss ligature, and lubricant.
298 words, about 1 min06Performs Coronal Polishing
Coronal polishing removes plaque and stain from exposed tooth surfaces using a rubber cup or brush with prophylaxis paste. It is not a substitute for scaling, and it is not appropriate for every patient.
269 words, about 1 min07Applies Anti-cariogenic Agents
Anti-cariogenic agents reduce caries by promoting remineralization and inhibiting demineralization. Fluoride is the primary agent; xylitol and calcium phosphate products are adjuncts.
272 words, about 1 min08Obtains Impressions for Study Models
A study model is a positive reproduction of the dentition used for diagnosis, treatment planning, and records. The impression is the negative.
274 words, about 1 min09Applies and Removes Matrix System and Wedges
A matrix substitutes for a missing proximal wall during restorative treatment. It holds material, restores contour, and prevents overhangs.
273 words, about 1 min10Applies Treatment Liners, Acid Etch, and Bonding Materials
This domain covers materials placed before or during restoration: liners, etchants, and bonding agents. The exam tests purpose, sequence, and handling.
252 words, about 1 min11Applies Pit and Fissure Sealants
Pit and fissure sealants are resin coatings placed in susceptible occlusal pits and fissures to prevent caries. They work by physically blocking bacterial access and food retention.
276 words, about 1 min12Performs Vital Tooth Whitening Using Trays
Vital tooth whitening uses a tray-delivered peroxide gel on vital teeth. The exam tests candidacy, tray fabrication, instructions, and management of side effects.
272 words, about 1 min