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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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