20 shown in fig3 surface 20 has peripheral edge 21 that has a complementary shape and size to that of the seat defined by peripheral walls 18 and top surface 19 of cap 16 in another embodiment the floss carrier 22 is an integral part of cap 16 in which case the floss carrier and cap are united by suitable means such as mating threads on the cap 16 and elongated body 13 in the first embodiment the insertable portion of floss carrier 22 base surface 20 and peripheral edge 21 may be glued or fixed in some othe fashion in addition to the snug seating discussed above floss carrier 22 also includes a plurality of side walls rising above base surface 20 to a roof surface 25 the side walls base surface 20 and roof 25 define an enclosed space within which is disposed a significant amount of dental floss preferably wound in some type of compact shape on a spool as best shown in fig2 end portion 41 of dental floss 32 extends out of a hole or a t shaped cut out 43 in side wall 45 of the housing the bottom extremity 47 of cut out 43 is proximate base surface 20 the upper bar 49 of cut out 43 is generally in a plane spaced from but parallel to base surface 20 on adjacent side wall 51 is attached a cutter plate 26 cutter plate 26 has in this embodiment two tabs 28 and 30 that protrude from the outside surface of side wall 51 cutting tabs 28 and 30 have cutting edges.