In the past, toothpaste tubes were made out of metal, which would often crack and leak toothpaste out of the sides. Find out why toothpaste tubes switched from metal to plastic with information from a dental hygienist in this free video on the history of toothpaste.
Expert: Jennifer Salamin
Bio: Jennifer Salamin has been working as a dental hygienist for seven years. She is a graduate of Ferris State University in Big Rapids, Mich., and has been working for Dr. Brian Merkel since graduation.
Filmmaker: Travis Waack
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cooltiger139 2 years ago