Welcome to Tietan Dental You are invited to join our family. Tietan Dental is a family owned dental practice and has been providing dental health and beautiful smiles in Walla Walla for 3 generations. Robert Kellogg became a dentist following WW II and began his practice in Walla Walla in 1952. His eldest son Don and youngest son David both practiced with their father for several years. Together, Don and David formed Tietan Dental in 1996. Don’s daughter Julie graduated from dental school in 2005 becoming the third generation Kellogg dentist to practice in Walla Walla.