Understanding Plaque and Oral Hygiene

Why did Chris not brush his teeth for two days?

• He wanted to see how long he could go without brushing.

• He ran out of toothpaste.

• He was conducting a medical research experiment.

• He forgot to brush.

What is plaque primarily composed of?

• Only bacteria

• A mixture of food particles, acid, and bacteria

• Only food particles

• Only acid

How does plaque contribute to tooth decay?

• It prevents cavities.

• It makes teeth whiter.

• It turns sugars into acid that erodes the enamel.

• It strengthens the tooth enamel.

What was used to reveal the amount of plaque on teeth?

• A magnifying glass

• A toothbrush

• A special blue dye

• A dental drill

What was the visual difference between the teeth of someone who brushes regularly and someone who hasn't brushed for two days?

• The unbrushed teeth were whiter

• The brushed teeth were darker

• The unbrushed teeth had more visible plaque

• No visible difference