Test your knowledge

1. Which of the following statements is not true regarding the influence of saliva on erosion?

a)

Saliva neutralises acid and prevents acidification by providing tooth minerals

b)

Increasing a low salivary flow rate can under no means stop the aggravation of erosion

c)

The efficacy against erosion is determined mainly by its composition and flow rate

d)

Saliva is the source of the dental pellicle, which has protective properties

2. What is the estimated prevalence of signs of erosion in the Western population?

a)

20%

b)

30%

c)

50%

d)

70%

3. Erosion can be caused or aggravated by various extrinsic factors. Which of the following do not apply?

a)

Certain medicines / drug abuse

b)

Strenuous exercise

c)

Lactovegetarian diet

d)

Oral hygiene products with fluoride content

4. Certain oral hygiene procedures can increase the symptoms of erosion. Why?

a)

They are highly abrasive and are used incorrectly (e.g. using too much pressure when brushing teeth)

b)

They have a low pH but have active ingredients such as polyvalent cations or fluorides

c)

They have a high pH and additionally can buffer a drop in pH

d)

They are gentle on the teeth

5. What is dental erosion?

a)

Dissolution of dental hard tissue by intrinsic or extrinsic acidic environment without the involvement of bacteria

b)

Loss of dental hard tissue due to mechanical interaction of teeth and other materials, such as a toothbrush and toothpaste

c)

Abnormal occlusal loading, predisposing cervical enamel to mechanical and chemical wear

d)

Dissolution of hard tissue by bacterial acids

6. Which of the following is not one of the main biological factors related to erosion?

a)

Saliva

b)

Blood

c)

Enamel

d)

Dentine

7. Presence of erosive lesions often positively correlates with:

a)

Caries activity

b)

Fast drinking habit

c)

High buffering capacity of saliva

d)

Low salivary flow rate

8. What might be a clinical presentation of erosion?

a)

Erosion can lead to wedge-shaped defects with depth clearly exceeding width and sharp edges

b)

Erosion shows flat glossy areas with distinct margins and corresponding defects on antagonistic teeth

c)

Erosion can lead to defects with depth clearly exceeding width and sharp edges

d)

Erosion shows rounded edges and often shows a rim of intact enamel along the gingival margin of facial surfaces due to the protection by sulfus fluid and / or plaque

9. Which of the following statements is not true regarding wedge-shaped defects?

a)

Wedge-shaped defects can be worsened by dental erosion

b)

Wedge-shaped defects should always be treated with adhesives; there is no need to assess aetiology

c)

Wedge-shaped defects may also be prone to caries

d)

Wedge-shaped defects have a multicausal aetiology

10. According to the BEWE scoring system, which of the following numbers represents the most severe level of erosion?

a)

1

b)

3

c)

5

d)

10

After having answered all questions, you can start the automated evaluation by clicking on "Evaluation."