| 摘要 |
A dental floss, which is normally used in dentistry only for a mechanical cleaning of the spaces between the teeth, is given a disinfecting and therapeutic-prophylactic property with a specific disinfecting and preventive action against bacterial plaques and caries obtained by forming a film of a substance containing the suitable agents on the surface of the dental floss, these agents being preferably one or more of the following active principles each having the above-mentioned properties: - quaternary ammonium bases performing a disinfecting action; - chloroexidine digluconate performing a preventive action against bacterial plaques; - sodium mono-fluorophosphate performing a preventive action against caries; this is preferably otbained by locating the reel (10) of dental floss (11) within a case in the open upper part (22) of which a closed chamber (14) is received containing a mass of a gel including the above agents; the closed chamber has an opening (19, 20) both in the top and bottom walls (16, 18) through which the dental floss (11) passes through the chamber (14) and the gel mass that, consequently, forms the film on the dental floss (10) as the same is unwound from reel (10).
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