ADEX Trivia 5 — Questions and Answers
Question 1: The founder of dental hygiene as a profession in the United States is:
- G.V. Black
- Alfred Fones (Correct answer)
- W.D. Miller
- John Greenwood
Correct answer: Alfred Fones
Alfred C. Fones is recognized as the founder of dental hygiene; he trained his cousin Irene Newman as the first dental hygienist in 1906.
Question 2: Which term describes bone loss that occurs equally on the mesial and distal aspects of adjacent teeth, resulting in a flat bone crest?
- Vertical bone loss
- Horizontal bone loss (Correct answer)
- Furcation involvement
- Fenestration
Correct answer: Horizontal bone loss
Horizontal bone loss describes uniform reduction of alveolar bone height across adjacent teeth, leaving a flat, level bone crest.
Question 3: What is the normal clinical attachment level (CAL) in a healthy periodontium?
- 0 mm (Correct answer)
- 1–2 mm
- 3–4 mm
- 5–6 mm
Correct answer: 0 mm
In a healthy periodontium, the clinical attachment level is 0 mm because the junctional epithelium attaches at the CEJ with no apical migration.
Question 4: Which salivary gland produces the most saliva at rest (unstimulated)?
- Parotid
- Sublingual
- Submandibular (Correct answer)
- Minor salivary glands
Correct answer: Submandibular
The submandibular gland contributes approximately 65–70% of unstimulated salivary flow, producing a mixed serous and mucous secretion.
Question 5: Which of the following correctly describes the 'universal' curette?
- Has one cutting edge and is used on one arch only
- Has two cutting edges and can be used on all surfaces (Correct answer)
- Has a 70-degree blade angle and is area-specific
- Has a single-ended design for anterior use only
Correct answer: Has two cutting edges and can be used on all surfaces
Universal curettes have two cutting edges on a 90-degree blade and can be adapted to all tooth surfaces throughout the mouth.
Question 6: Approximately how many teeth are in the permanent dentition?
- 20
- 24
- 28–32 (Correct answer)
- 36
Correct answer: 28–32
The permanent dentition consists of 28 teeth, or 32 if all four third molars (wisdom teeth) are present.
Question 7: Which plaque index assigns a score of 0–3 based on plaque thickness at the gingival margin?
- O'Leary Plaque Control Record
- Silness and Löe Plaque Index (Correct answer)
- Quigley-Hein Index
- Turesky Modification Index
Correct answer: Silness and Löe Plaque Index
The Silness and Löe Plaque Index uses scores 0–3 to assess plaque thickness along the gingival margin without disclosing agents.
ADEX Trivia 5
The founder of dental hygiene as a profession in the United States is: