Historical clue formulations

• One who tries to make a good impression — 2025-09-05
• Whom one might go see at "tooth hurty," per a classic joke [Czech] — 2023-01-17
• Calculus expert? — 2022-08-14
• One with an opening to fill? — 2020-03-11
• Number of people in an office? — 2019-11-17
• One who knows the drill — 2019-08-01
• One with a job to fill? — 2017-03-30
• One who works with canines — 2011-12-18
• Driller and filler — 2007-02-13
• One who knows the drill — 2003-04-13
• Mouth mirror user — 2001-12-10
• One who's down in the mouth? — 2001-03-27
• Down-in-the-mouth sort? — 2000-01-02
• Drill master? — 1998-12-16
• Filling fellow — 1994-07-31
• Person who's feeling down in the mouth? — 1994-06-06