toothpaste lab

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Toothpaste Lab Environmental Explorations Mr. Luis A. Velazquez

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Toothpaste Lab. Environmental Explorations Mr. Luis A. Velazquez. Toothpaste Background. Toothpaste is not a relatively modern phenomena. - PowerPoint PPT Presentation

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Page 1: Toothpaste Lab

ToothpasteLab

Environmental Explorations

Mr. Luis A. Velazquez

Page 2: Toothpaste Lab

Toothpaste Background Toothpaste is not a relatively modern

phenomena. In fact, as long ago as 3000-5000 BC

Egyptians made a dental cream by mixing powdered ashes of oxen hooves with myrrh, burned egg shells, pumice, and water.

Unfortunately, these early Egyptians didn't have toothbrushes but used chew sticks to apply their dental cream.

Page 3: Toothpaste Lab

Toothpaste Background In 1000 AD Persians added burnt shells of snails and oysters

along with gypsum. Unfortunately, at this point, toothpaste was still reserved for

the rich. Later, in Greece and Rome, we see more abrasives being

added to the powder mixture, like crushed bones and oyster shells.

We know the Romans added flavoring, perhaps to help with bad breath and to make their paste more palatable. This flavoring was more or less powdered charcoal and bark

In 18th century in England a tooth cleaning "powder" containing borax was sold in ceramic pots.

One of the problems, which lasted well into the twentieth century, was that they were often very abrasive, causing damage to teeth.

Page 4: Toothpaste Lab

Prior to WWII, toothpaste was packaged in small lead/tin alloy tubes.

The inside of the tube was coated with wax, however, it was discovered that lead from the tubes leached into the product.

It was the shortage of lead and tin during WWII that led to the use of laminated (aluminum, paper, and plastic combination) tubes.

At the end of the twentieth century pure plastic tubes were used.

Page 5: Toothpaste Lab
Page 6: Toothpaste Lab

If you will do a toothpaste what ingredient will you use and why?

Page 7: Toothpaste Lab

The breakthrough that transformed toothpaste into the crucial weapon against tooth decay was the finding that fluoride could dramatically reduce cavities.

Dr. William Engler tested 400 preschool children and discovered a dramatic reduction in dental cavities among children treated with fluoride.

This study, along with many others done around the world, led to the widespread introduction of fluoride in the 1950s.

Page 8: Toothpaste Lab

Toothpaste We use it every single day. In fact, Americans

brush their teeth nearly 200 billion times a year.

We spend more than 1.6 billion dollars on it. But, have you ever wondered exactly how it

helps our teeth? And how do we go about choosing which one's right for us?

Page 9: Toothpaste Lab

Toothpaste and Mining The cleaning is done with abrasive

from rock that rub plaque away.

Abrasive are minerals like silica, limestone, aluminum oxide ( also use in sandpaper)

Most toothpaste are made of titanium oxide

Titanium dioxide is also use to make white paint.

The sparkle in some toothpaste comes from mica, a mineral common in many rocks.

Page 10: Toothpaste Lab

Active Ingredients Active Ingredients: Fluoride Antibacterial agents, most often Triclosan is used to

control plaque Desensitizing agents Anti-tartar agents Sodium bicarbonate (baking soda) Enzymes, to enhance the antibacterial properties of

saliva Xylitol, a non-sugar sweetener, which reduces levels of

cariogenic (decay causing) bacteria in the mouth and enhances remineralization

Page 11: Toothpaste Lab

Inactive Ingredients Water Detergents, to make the toothpaste foam Binding agents Humectants to retain moisture Flavoring, sweetening, and coloring agents

like peppermint, spearmint, cinnamon, wintergreen, and menthol

Preservatives Abrasives for cleaning and polishing

Top Ten

Page 12: Toothpaste Lab

Ingredients Today