| 摘要 |
A dental floss indicating a 2D construction in its non-use status and an L-shaped construction in use includes a U-shaped holder, a floss secured and bridged between two tops of the U-shaped holder, a left handle and a right handle respectively connected to both sides at the base of the U- shaped holder; a left hinge and a right hinge made thinner and allowing easy bending being respectively provided at where both handles are connected to the U-shaped holder; a left and a right locking means being respectively provided to both of the left and the right handles; the surface each of the left and the right handles being disposed with multiple ribs; and a tail hinge being disposed at where both ends from the left and the right handles are connected to each other.
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