Evolution of the toothbrush ... Traces of the first toothbrush can be dated back as early as 3500 B.C.E. (before common era) and were thought to be used by the Egyptians and Babylonians
Evolution of the toothbrush ... Traces of the first toothbrush can be dated back as early as 3500 B.C.E. (before common era) and were thought to be used by the Egyptians and Babylonians
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