Jeff Purk is the racing dentist. That’s right. A dentist. When he’s not blazing around racetracks as a regular in the MotoAmerica Series, Purk is a practicing dentist in Iowa. We caught up with “the racing dentist” this week for our 118th episode of Off Track With Carruthers And Bice to see what it takes to do two completely different things – dentistry and motorcycle racing.