Teeth Whitening Knowledge 3

Question 1

Tetracycline staining is classified as which type of tooth discoloration?

Accepted Answer

Intrinsic

Answer

Tetracycline staining is intrinsic because the antibiotic becomes incorporated into the dentin structure during tooth development.

Question 2

What whitening side effect is most commonly reported by patients?

Accepted Answer

Increased tooth sensitivity

Answer

Tooth sensitivity during or after whitening is the most frequently reported side effect, typically resolving within 24–48 hours.

Question 3

Which ingredient in whitening toothpaste primarily removes surface stains through physical abrasion rather than chemical bleaching?

Accepted Answer

Silica or hydrated silica

Answer

Silica particles act as mild abrasives that physically polish away surface stains without chemically bleaching the tooth.

Question 4

What does the term 'vital bleaching' refer to in dentistry?

Accepted Answer

Whitening living teeth that have intact pulps

Answer

Vital bleaching applies to whitening procedures performed on teeth that still have a living pulp, distinguishing them from non-vital (devitalized) teeth.

Question 5

Non-vital bleaching (internal bleaching) is most commonly performed on which type of tooth?

Accepted Answer

Endodontically treated (root canal) teeth

Answer

Internal bleaching is used on root-canal-treated teeth where the pulp chamber can be accessed and packed with a whitening agent.

Teeth Whitening Practice Test

Teeth Whitening Practice Test

Teeth Whitening Knowledge 3