An oral care tool (1； 50； 100) for tensioned dental floss comprising a hollow handle portion (2； 51； 101) at the user's disposal in which a housing chamber (3), which receives a spool (B) of dental floss (F) and an outlet port (4； 103) which allows the user himself the progressive extraction of the dental floss (F) from the hollow handle portion (2； 51； 101), are defined, a fork (5； 52) formed by a couple of shaped arms (6, 7； 53, 54), projecting upwardly from the hollow handle portion (2； 51； 101), provided with respective terminal tips (8, 9) spaced apart each other by a prefixed distance (D) and suitable to support a first progressive given length (L1) of the dental floss (F) kept in tension, placing it in the prefixed distance (D) spacing apart the terminal tips (8, 9), guide means (10), arranged at least in the upper outer wall (8a, 9a) of each of the terminal tips (8, 9) of the shaped arms (6, 7； 53, 54), suitable to receive a second progressive given length (L2) of the dental floss (F), and tensioning means (11； 55), associated externally with the hollow handle portion (2； 51； 101) and/or the fork (5； 52), which allow the user to tension at least the first given length (Li) of the dental floss (F) in order to favour effective and correct insertion thereof between two adjacent teeth. In particular, the hollow handle portion (2； 51； 101), the fork (5； 52), the guide means (10) and the tensioning means (11； 55) are made in one piece and monolithic each other forming a single reinforced structural body (12) obtained directly during the production phase by molding and having an at least partially box-shaped structure in a part defining the hollow handle portion (2； 51； 101).La présente invention concerne un outil de soins buccaux (1 ； 50 ； 100) pour fil dentaire tendu comprenant une partie de poignée creuse (2 ； 51 ； 101) à disposition de l'utilisateur dans laquelle une chambre de logement (3), qui reçoit une bobine (B) de fil dentaire (F) et un orifice de sortie
