Even the early Greeks and Romans knew the importance of oral hygiene. Back then, they used crushed bone and oyster shells to abrasively clean their teeth. Granted, tooth enamel is the hardest surface in the human body. But the Roman…
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Even the early Greeks and Romans knew the importance of oral hygiene. Back then, they used crushed bone and oyster shells to abrasively clean their teeth. Granted, tooth enamel is the hardest surface in the human body. But the Roman…