author
b. 1882
Best known for a practical early-20th-century guide to dental care, this little-known writer focused on keeping teeth healthy through everyday habits. The surviving record is slim, but the work points to a clear interest in preventive health and plainspoken advice for general readers.

by Louis Reiss, William J. (William John) Fielding
Louis Reiss was born in 1882 and is credited as the co-author of Teeth and mouth hygiene, a short popular guide to oral care written with William J. Fielding. The book was originally published in 1924 by the Haldeman-Julius Company and later made available through Project Gutenberg.
What can be confirmed about him online is limited. Library and ebook records consistently connect his name with Teeth and mouth hygiene, and at present that appears to be the main work by which he is remembered.
Even from that small footprint, his contribution is easy to place: he helped present dental health as part of everyday well-being, explaining mouth care in an accessible way for ordinary readers rather than specialists.