A) Abrasive properties for plaque removal.
B) To whiten teeth immediately.
C) Flavor enhancement.
D) Fluoride source.

A) Ashes from burning plastic.
B) Volcanic ash.
C) Hardwood ashes (like oak or beech).
D) Ashes from treated lumber.

A) Ensuring the ashes are completely cool.
B) Mixing with bleach.
C) Adding sugar for taste.
D) Using glowing embers.

A) Test a small amount to check for sensitivity.
B) Swallow a teaspoon of ashes.
C) Apply liberally to all teeth.
D) Mix with strong acid.

A) Changes the pH balance.
B) Hardens tooth enamel.
C) Releases fluoride.
D) Absorbs impurities and polishes teeth.

A) Pottery clay.
B) Bentonite clay.
C) Modeling clay.
D) Play-Doh.

A) Remineralization.
B) Gum recession.
C) Tooth extraction.
D) Increased plaque formation.

A) Gasoline.
B) Water.
C) Strong acid.
D) Super glue.

A) Every time you brush your teeth.
B) Instead of going to the dentist.
C) Sparingly, a few times a week at most.
D) Daily.

A) Teeth whitening.
B) Stronger breath.
C) Tooth sensitivity or gum irritation.
D) Feeling of cleanliness.

A) Purchased from a hardware store.
B) From a clean wood-burning stove or fireplace.
C) From a campfire with mixed debris.
D) From a volcanic eruption.

A) Hard and clumpy.
B) Extremely watery.
C) Smooth and fine.
D) Gritty and rough.

A) To improve the taste.
B) To increase abrasiveness.
C) To make it easier to swallow.
D) To avoid scratching the enamel.

A) Yes, dentists recommend it.
B) No, modern toothpaste is generally recommended.
C) Yes, it's better for your health.
D) Only if you dislike toothpaste.

A) Only if you experience pain.
B) Regular dental checkups.
C) None, it's a natural method.
D) Self-diagnosis only.

A) Radioactivity.
B) High fluoride content.
C) Sweetness.
D) Abrasiveness.

A) Stronger flavor.
B) More abrasive.
C) Higher acidity.
D) May be gentler on teeth.

A) Salt water.
B) Clean, filtered water.
C) Soda.
D) Tap water directly from the source.

A) Aggressively, with a hard-bristled brush.
B) Rubbing vigorously with your finger.
C) Gently, with a soft-bristled toothbrush.
D) Using a wire brush.

A) Leave it on overnight.
B) Apply mouthwash immediately.
C) Swallow the remaining paste.
D) Rinse thoroughly with water.

A) Improved taste and potential medicinal benefits.
B) Higher fluoride content.
C) Increased abrasiveness.
D) Longer shelf life.

A) Mint.
B) Grass.
C) Poison ivy.
D) Rhubarb leaves.

A) Extracting minerals from teeth.
B) Softening of tooth enamel.
C) Restoring minerals to tooth enamel.
D) Hardening of the gums.

A) Yes, dentists prefer it.
B) Yes, it's cheaper.
C) Yes, it's always better.
D) No, it depends on individual needs and preferences.

A) In the refrigerator.
B) Exposed to sunlight.
C) In a wet, open container.
D) In a dry, airtight container.

A) It could introduce harmful bacteria or substances into your mouth.
B) It will become more effective.
C) Nothing, it's naturally antibacterial.
D) It will make your teeth whiter.

A) The pH level doesn't matter.
B) Slightly alkaline ashes are generally preferred.
C) The ash should be neutral.
D) Highly acidic ashes are better for cleaning.

A) People with sensitive teeth or gum issues.
B) People who frequently consume sugary drinks.
C) People with perfectly healthy teeth and gums.
D) People who never brush their teeth.

A) Read online reviews only.
B) Try it without any research.
C) Consult with a dentist.
D) Ask a friend.

A) Damage to tooth enamel.
B) Increased tooth sensitivity.
C) None, the teeth are strong enough.
D) Gingivitis reduction.