They were living in the Kovno Ghetto when she and her family were rounded up by the Nazis in 1944 and sent to the Stutthof concentration camp.
She worked with children who had dental problems similar to those that she herself had suffered in the concentration camp after a Nazi guard knocked her teeth out.
[2] In 1980, Birger founded the Dental Volunteers for Israel, a non-profit clinic in the Jerusalem neighborhood of Mekor Chaim, offering free treatment for needy children.
In 1992 she published the book A Daughter's Gift of Love, detailing her experience during the Holocaust.
In 2000 Birger was named as a Dental Fraternity Alpha Omega International honorary member.