Dental hygienists held about 174,100 jobs in 2008. Because multiple job holding is common in this field, the number of jobs exceeds the number of hygienists. About 51 percent of dental hygienists worked part time. Almost all jobs for dental hygienists�about 96 percent�were in offices of dentists. A very small number worked for employment services, in physicians� offices, or in other industries.
Source: U.S. Department of Labor, Occupational Outlook Handbook, 2010-11 Edition