A "cotton roll" toothbrush donated to the museum in 1924 by Johnson & Johnson (along with 6 specimens of dental floss) for use in the "Hall of Health" exhibition about the importance of dental hygiene. According to the manufacturer this brush-less toothbrush was for use when a patient's gum tissue was not healthy and a dentist recommended not using a bristle-type brush. Although this article was not requested by the curator, it appears to have been included in the exhibition.
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