Final answer:
Pierre Fauchard's documentation of all known dental information is indeed true. However, the advancements in the dental field by African Americans following the Civil War are also noteworthy with individuals like Freeman, Grant, and Nelson Rollins as pioneers.
Step-by-step explanation:
The statement that Pierre Fauchard recorded all known information on dentistry in a book is true. Fauchard is often referred to as the father of modern dentistry for his comprehensive work, which compiled the existing knowledge and practices of the time. However, the question's reference to the post-Civil War period and African American advances in the medical field is significant as it highlights pioneers like Robert Tanner Freeman, George Franklin Grant, and Ida Gray Nelson Rollins. Each of these individuals made historic strides: Freeman as the first African American to graduate with a doctorate in dental surgery, Grant as Harvard's first Black faculty member and an innovator in cleft palate treatment, and Nelson Rollins as the first female African American doctor of dentistry.