A medical device for treating interdental surfaces is disclosed. The medical device includes: a treatment element (1) with a first surface (2) and a second surface (3), the first surface (2) being opposite to the second surface (4)； a drive assembly (4) connected to the treatment element (1) and configured to transfer a motion to the treatment element (1)； an actuating assembly (5) configured to exert a force on the first surface (2) of the treatment element (1)； and an abrasive coated on the second surface (3) of the treatment element (1).
