Patent ID: 7487785

Claim:
A dental floss device comprising: a handle having a head piece; and a dental floss holder for interengagement with the head piece; the dental floss holder including a base portion and a pair of spaced-apart jaws extending from the base portion to accommodate a length of dental floss therebetween; the jaws of the holder extending to embrace the head piece therebetween in a correct alignment configuration of the holder with respect to the handle; at least one side of the base portion of the dental floss holder having a holder interlock part; the head piece including a floor section and a pair of walls extending from the floor section, the walls of the head piece being spaced-apart to define a groove therebetween; and at least one wall of the pair of walls of the head piece having a head interlock part; the holder interlock part of the base portion of the dental floss holder and the head piece interlock part of the head piece substantially preventing interengagement of the base of the dental floss holder in the groove of the head piece in only a correct alignment configuration of the dental floss holder with respect to the head piece in which the base portion of the dental floss holder fits into the groove of the head piece and the interlock parts are inter-engaged.