Ch.21

Question 1

What are dental stains?

Answer 1

Direct adherence to tooth surface by bonding to the acquired pellicle.

Question 2

True/ False:

Dental stains are contained within calculus and soft deposits.

Answer 2

TRUE

Question 3

True/False:

You can only acquire stains within an actual tooth structure but not restorative material.

Answer 3

FALSE

Restorative material can become stained as well.

Question 4

What are Gingival disease and Tooth decay related to?

Answer 4

Biofilm

Question 5

There are two locations where a person can acquire stains. What is the classifications for these types of stains?

Answer 5

• Extrinsic

- Intrinsic

Question 6

What does is and Extrinsic stain?

Can it be removed?

Answer 6

• a stain on the external surface of the tooth.

- Yes, it can be removed.

Question 7

What is an Intrinsic stain?

Can it be removed?

Answer 7

• A stain within the tooth.

- No, this stain cannot be removed.

Question 8

What are the two sources of staining?

Answer 8

• Exogenous

- Endogenous

Question 9

What is an Exogenous source of staining?

Answer 9

It develops or originates from sources outside of the tooth(these can be extrinsic or intrinsic stains).

Question 10

What is an Endogenous source of staining?

Answer 10

A stain that develops or originates from within the tooth(this stain is ALWAYS intrinsic).

Question 11

What are some substances that can cause exogenous stains?

Answer 11

• FOOD: soda, red wine, berries, licorice, leaves of a betel plant, candy with a coloring agent.
• Restorative Materials
• Poor Oral Hygiene
• Chlorhexidine
• Tobacco
• Drugs