Historical clue formulations

• Orthodontic device — 2024-07-18
• Orthodontic device for separating teeth — 2023-06-06
• Orthodontic device — 2020-10-26
• Orthodontic device — 2016-03-25
• Orthodontic device for separating teeth — 2007-03-01
• Spreading device — 2003-08-31
• One just filling in — 2002-12-05
• Keyboard key — 2000-03-12
• Gizmo that holds things apart — 1997-04-05