Marc Kamp appeared today before Oakland Circuit Judge Mark Goldsmith.
Officials say Kamp sent a threatening, anti-Semitic letter in April 2008 to another dentist with whom he was involved in a civil lawsuit.
The other dentist, Steven Moss, is Jewish.
Kamp could have faced up to two years in prison. He will be on work release after the first 30 days of his sentence.
Kamp’s attorney, David Burgess, did not return calls seeking comment.
According to the Michigan Department of Community Health Web site, Kamp’s license has not been suspended.