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Ellen Coates
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Preview
Evolution of the toothbrushTimelineChanges in designEffects on our society and the
environment
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Timeline
3500 B.C.Concern of teeth
1600 B.C.Chewing sticks
1498First bristles
1780First toothbrush
1920’sBristles
1600’sToothpaste
1938Nylon Filament
1918Celluloid handles
1963Electric
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3500 B.C.
Babylonians chewed on sticksHelped to clean teeth and mouthMentioned in Greek and Roman
literature(www.toothbrushexpress.com)
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1600 B.C.
“Chewing sticks” were usedChewing sticks had two sides--one
was chewed on and the other was pointy to pick at teeth
Sticks were about the size of a pencilTwigs could freshen the mouthFound in Chinese literature(www.toothbrushexpress.com)
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1498
First bristles were invented in China
Coarse hairs were taken from the back of a hog’s neck
Bristles were attached to bone or bamboo
(www.loc.gov)
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1600
EuropeRags and sponges were dipped in sulfur oil or salt solution
Sticks were attached to help reach
(www.asme.org)
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1780
First toothbrushWilliam Addis of Clerkenwall,
EnglandHairs of a cow tail were attached
to the same cow’s thighbone(www.asme.org)
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1918
World War 1Soup industries called for cow
parts being used in toothbrushesCelluloid handles were created by pouring plastic into mold
(www.asme.org)
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1920’s
New method of attaching bristlesDrill hole in brush headForce in many bristlesSecure with staple
Easier to manufacture(www.oralb.com)
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1938
Nylon filament developed in 1938Chinese boar hair was favored
bristle materialWorld War 2 stopped export of
hair into the United StatesNylon replaced boar hair
(www.asme.org)
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1963
First electric toothbrushGerman engineer Max BraunCopied movements of manual
toothbrushNot common until the 1970’s
(www.oralb.com)
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Effects on Society/EnvironmentCleaner teeth
Healthier mouthLess pain and aches
AffordableEveryone has chance to brush teethReplaceable
Nylon hair and celluloid handleLess cow slaughteringReduction in production costs, making it
affordable
(www.asme.org)
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Summary
Evolution of the toothbrushTimelineChanges in designEffects on our society and the
environment
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ReferencesThe Library of Congress (2004). Electronic Reference: The
Library of Congress. Retrieved Aug. 31, 2005 from http://loc.gov/rr/scitech/mysteries/tooth.html
The American Society of Mechanical Engineers (2001). Electronic Reference: The American Society of Mechanical Engineers. Retrieved Aug. 31, 2005 from http://asme.org/mechanicaladvantage/march2001/toothbrush.html
ToothbrushExpress.com (2005). Electronic Reference: ToothbrushExpress.com. Retrieved Aug. 31, 2005 from http://toothbrushexpress.com/html/toothbrush_history.h tml
Oral-B (2004). Electronic Reference: Oral-B. Retrieved Aug. 31, 2005 from http://www.oralb.com/aboutus/history.asp