The end of the dentist's drill.
Hancocks
S
S
D003754:Dental High-Speed Equipment; D018865:Dental Research / Q000639:trends; D003793:Dental Restoration, Permanent / Q000295:instrumentation; D003813:Dentistry / Q000639:trends*; D006801:Humans; D013674:Technology, Dental / Q000639:trends; D014925:Wit and Humor as Topic