DHN 101 – Full Practice Final Exam Latest Update 2026/2027| Already Graded A+

DHN 101 – Full Practice Final
ExamLatest Update 2026/2027|
Already Graded A+
Instructions

●​ Choose the best answer unless it says Select All That Apply (SATA)
●​ Don’t scroll ahead for answers—attempt first




Section A: Core Concepts
Q1

The primary role of a dental hygienist is to:​
A. Diagnose systemic diseases​
B. Prevent oral disease and promote health​
C. Perform oral surgery​
D. Prescribe antibiotics




Q2

Which structure protects the tooth crown?​
A. Dentin​
B. Pulp​
C. Enamel​
D. Cementum




Q3

Which factor contributes MOST to plaque formation?​
A. Water intake​
B. Bacterial accumulation​
C. Exercise​
D. Sunlight

, Q4

What is the earliest sign of gum disease?​
A. Tooth mobility​
B. Gingival bleeding​
C. Bone loss​
D. Tooth loss




Q5

Which index measures oral hygiene status?​
A. BMI​
B. OHI-S​
C. BP​
D. RBC




Section B: Oral Disease & Prevention
Q6

Dental caries is caused primarily by:​
A. Viruses​
B. Bacteria metabolizing sugars​
C. Trauma​
D. Genetics only




Q7

Which food increases caries risk MOST?​
A. Cheese​
B. Apples​
C. Sticky candy​
D. Meat




Q8

Fluoride’s main action is to:​
A. Destroy enamel​