Teeth Whitening Whitening Methods Comparison

Question 1

Which whitening method typically produces the fastest visible results in a single appointment?

Accepted Answer

In-office professional whitening with light or laser activation

Answer

In-office bleaching uses the highest peroxide concentrations with light/heat activation and can produce 5–10 shade improvements in 60–90 minutes.

Question 2

Crest Whitestrips are classified as which category of whitening product?

Accepted Answer

OTC whitening strips with a low-to-moderate concentration of hydrogen peroxide

Answer

Crest Whitestrips are FDA-regulated OTC strips containing 6–10% hydrogen peroxide, available without a prescription at retail stores.

Question 3

What is the primary advantage of custom dental-office tray whitening over generic OTC strip trays?

Accepted Answer

Custom trays conform precisely to each patient's unique arch, maximizing gel contact and minimizing gum exposure

Answer

Generic OTC trays are one-size-fits-all and often allow gel to overflow onto gums; custom trays precisely match the patient's teeth for uniform contact and safer soft-tissue protection.

Question 4

OTC whitening strips are most effective on which type of staining?

Accepted Answer

Mild-to-moderate extrinsic staining from food and beverages

Answer

OTC strips with lower peroxide concentrations work well on surface-level and shallow extrinsic staining but lack the potency to address deep intrinsic discoloration.

Question 5

LED whitening devices sold for home use (e.g., teeth whitening kits with a mouthpiece light) work primarily because:

Accepted Answer

The LED may accelerate peroxide breakdown slightly, though clinical evidence for significant added benefit is debated

Answer

Some evidence suggests specific wavelengths can modestly accelerate peroxide activation, but at-home LED lights have far lower intensity than professional systems, and their benefit is debated.

Teeth Whitening Practice Test

Teeth Whitening Practice Test

Teeth Whitening Whitening Methods Comparison