BRUSH, BRUSH, BURSH!

The purpose of this experiment was to

determine which liquid would stain

your teeth more and the effect of

various cleansers on the removal of

the tooth stains.

We became interested in this idea be-

cause we were fascinated with teeth

during Dental Health month. We

learned that people need to have clean,

healthy teeth for good digestion and

appearance.

To improve the health and appearance

of their teeth, consumers can use this

information to purchase effective

toothpaste.

Our 1st Hypothesis was the

fruit juice would stain worse

than coca cola or water.

Our 2nd Hypothesis was the

Colgate Whitening would re-

move the stain better than

Colgate Regular.

EXPERIMENT DESIGN

The constants in this study were:

Kinds of liquids used to stain the tile

(teeth);

Amount of liquids the tile (teeth) are

soaked in:

Amount of time the tile (teeth) soaked

in stain: two days;

Amount of toothpaste put on tile

(teeth):

Brand of Toothbrush: Colgate Regular

and Colgate Whitening

Amount of Strokes: 50 strokes per title

(tooth);

Size of Solo cups: 9oz

The manipulated variable was the type of

liquid and toothpaste we used to remove

the stains.

The responding variable was the amount

of stain removed.

To measure the responding variable we

used called on Mrs. Allen’s observation.

6 TILES

5 SOLO CUPS

2 JUICE BOX

2 Coca Cola CANS

1 BOTTLE OF WATER

1 ROLL OF PAPER TOWELS

1 TUBE OF COLGATE REGULAR

1 TUBE OF COLGATE WHITENING

4 COLGATE KIDS TOOTHBRUSHES

PROCEDURES

1. Place 5 tiles in different water, fruit

juice, and coke.

2. Place 2 different paper towels on a

counter to set the tile down on when they

are finished soaking.

3. Stain all the tiles by soaking them for 2

days in Solo cups.

4. Pull tiles out of liquid and place on paper

towels.

5. Label different paper towels with the

name of toothpaste used..

6. Observe and record stains.

7. Squeeze Colgate Regular and Colgate

Whitening on tiles.

8. Brush one tooth up and down for 50

strokes. Repeat for all tiles.

9. Allow tiles to sit in fresh water to

rinse off the toothpaste.

10. When the teeth are finished being

brushed and rinsed, put all of them on

paper towels.

11. Observe and record cleaning data.

The original purpose of this experiment

was to determine which liquid would stain

tile (teeth) the most. We used tile to rep-

resent teeth because it’s porous like our

teeth and will absorb stains. We also de-

termined the effect of various cleansers

on tooth stains.

The results of the experiment were the

fruit juice will stain the most. In addi-

tion we concluded the Colgate Whitening

proved to whiten the best on fruit juice

and coca-cola.

Whitening

Regular

Our hypothesis was that fruit juice would

stain the most and Colgate Whitening

would remove the stain the best.

The results indicate that this hypothesis

should be accepted because the Colgate

Whitening worked the best on both

stains.

Because of the results of this experi-

ment, we wondered if the longer you

were to brush the tooth the more of the

stain would come off? Also, we wondered

if the more expensive toothpaste works

better?

If we were to conduct this project again

we would use more brands of toothpaste

so that we could show differences in our

results. We would use a colorimeter or a

shade guide to determine the staining ef-

fects..