The top documents tagged [tooth brush design]

Pre-Plastic Era vs. Post Plastic Era. Pre-Plastic Era – The Toothbrush Dated back as far as 3500 BC The earliest know toothbrush was made by chewing on.

Pre-Plastic Era vs. Post Plastic Era. Pre-Plastic Era – The Toothbrush Dated back as far as 3500 BC The earliest know toothbrush was made by chewing on.

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