A dental cleaning device comprises a thread-shaped object and bristles or protrusions disposed on the thread-shaped object. When an user pulls the thread-shaped object into the tooth gap and moves the thread-shaped object back and forth, the bristles or the protrusions on the thread-shaped object are rubbed back and forth to achieve the effect of cleaning the tooth gap.一種清潔牙齒裝置,包括一線狀物,及裝置在線狀物上之刷毛或突出物。當使用者將線狀物拉入齒縫中,透過前後移動線狀物,藉由線狀物上的刷毛或突出物,來回磨擦,達到清潔齒縫之效果。1‧‧‧線狀物2、4、6、8‧‧‧線狀物中未裝置刷毛或突出物的部分3、5、7‧‧‧線狀物上裝置刷毛或突出物的部分