Final answer:
George Washington is the U.S. president famously known for wearing dentures, which were made from materials like ivory and human teeth, reflecting the period's limitations in dental technology.
Step-by-step explanation:
The U.S. president known for wearing dentures is George Washington. Contrary to the popular myth that they were made of wood, Washington's dentures were actually constructed from various materials including ivory, human teeth, and animal teeth.
Dental health and technology during his time were not as advanced as they are today, which is why dentures were a common solution for tooth loss. The struggles with dental health even among leaders like Washington highlight the historical evolution of dentistry, which saw significant advances with figures like Robert Tanner Freeman, the first African American dentist, and Ida Gray Nelson Rollins, the first African American female dentist.