This report provides information on some aspects of oral health and use of dental services of young adults in South Australia. Recent research indicates that the high percentages of children and adolescents visiting regularly falls away among young adults and there is a sharp increase in the proportion who usually visit when they have a problem rather than for a check-up. This is despite nearly one-third having untreated decay and signs of early decay being evident in almost half of those examined. Gains in oral health in childhood may be at risk when young people reach early adulthood.