The opening of an Arabic essay on the use of the toothbrush (siwak) written by Mu?ammad al-?qkirm?n? in the mid-18th century. No other copy is recorded. The copy is undated, probably 18th century.

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Keywords: 18th, al-?qkirm??, arabic, archival, archive, century, dental, essay, health, historical, history, medicine, mu?ammad, opening, siwak, toothbrush