Tooth sharpener
A tooth sharpener was a small hand-held device with a cylindrical grinder at one end, used by Ferengi to sharpen their teeth. The grinder rotated at high speeds and was applied to the edges of a tooth in order to sharpen it. Although Klingons also had relatively sharp teeth, Worf had never seen one before. ()

Rom owned a latinum-plated tooth sharpener as a child and the device held a strong sentimental value for him. ()  His son, Nog, held a similar attachment to his own tooth-sharpener and it was among the personal items that he auctioned off prior to his departure for Starfleet Academy where it was purchased by Worf in 2372. ()

Later that year, Worf's quarters were burgled. Among the items stolen was the tooth sharpener. This incident compelled him to request to live on the . ()

Quark was forced to use a wooden "chewstick" instead of a tooth-sharpener, which he blamed on not being Ishka's favorite son. ()

Klingons also sharpened their teeth, but used only simple files to do so. ()

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de:Zahnschärfer
fr:Aiguiseur de dent
Household tools