MCQs in dentistry

Multiple-choice questions (MCQs) in dentistry for dental hygienists and medical students:

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1. What is the primary purpose of dental prophylaxis?

   a) Tooth extraction

   b) Teeth whitening

   c) Preventive dental cleaning

   d) Orthodontic treatment

2. Which of the following oral conditions is primarily caused by bacterial plaque accumulation?

   a) Dental caries (cavities)

   b) Bruxism (teeth grinding)

   c) Dental fluorosis

   d) Enamel hypoplasia

3. What is the recommended technique for brushing a patient's teeth with gingival recession?

   a) Horizontal scrubbing

   b) Vertical scrubbing

   c) Circular scrubbing

   d) Modified Bass technique

4. Which dental instrument is commonly used for removing calculus deposits from the crowns of teeth?

   a) Dental mirror

   b) Periodontal probe

   c) Scaler

   d) Dental excavator

5. Which of the following is a risk factor for developing periodontal disease?

   a) Frequent fluoride use

   b) Overbrushing with a hard-bristle toothbrush

   c) Regular dental check-ups

   d) Adequate saliva production

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