1. The Toothbrush: From Twigs to Modern Bristles Thousands of years ago, ancient civilizations like the Babylonians and Egyptians were already concerned with dental hygiene. Around 3500 BC ...
1. The Toothbrush: From Twigs to Modern Bristles Thousands of years ago, ancient civilizations like the Babylonians and Egyptians were already concerned with dental hygiene. Around 3500 BC ...