Als Artikel des Massenkonsums sind Zahnbürsten eine Errungenschaft des Kunststoffzeitalters.
Um die Hygiene unserer Kauwerkzeuge haben wir Menschen uns aber selbstverständlich schon vorher gekümmert.
Die Anfänge des Zähneputzens reichen zurück in die Zeit der frühen Hochkulturen:
www.k-online.deMass production of toothbrushes is an achievement attributable to the development of plastics.
It goes without saying that we human beings were already interested in dental hygiene beforehand, however.
The practice of cleaning our teeth goes back as far as progressive cultures in ancient times:
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