1. History of Dental Hygiene
... bones, powdered charcoal, and bark. The Chinese generally used more herbal materials such as salt and mints. More modern toothpastes started to develop during the 1800's. "Early versions contained soap and in the 1850s chalk was included. Betel nut was included in toothpaste in England in the 1800s" (History) The 1850's brought a change of texture: powders turned to paste ... . Crème Dentifrice and Colgate developed and started producing toothpaste in jars and tubes. After 1945, soap was no longer an ingredient. It was replaced with other items such as sodium lauryl sulphate. During the...
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- Grade Level: High School