| 摘要 |
A dental floss tooth pick includes a holder having a space formed between two arms, a dental floss filament attached onto the holder and engaged with the free end portions of the arms and extended through the space of the holder, and a tightening device having a rotatable mandrel for engaging with the dental floss filament and for rotating the dental floss filament relative to the holder to rotate and tighten the dental floss filament to the holder. The mandrel includes an orifice formed in an upper portion, or an aperture formed in a lower portion for receiving and for rotating the dental floss filament and for rotating the dental floss filament relative to the holder.
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