Torppa-Saarinen E, et al. - Researchers evaluated whether or not the changes in different measures of perceived oral health (POH) were similar and related to each other over 11 years in the Finnish adult population in a longitudinal setting. They measured the perceived oral health by means of subjective oral health (SOH), self-assessed treatment need (STN), and oral health-related quality of life (OHRQoL). Data demonstrated a probable utility of multiple perceived oral health measures for service planning. As in the 3 separate measures used in this longitudinal study, the changes were various and thus measured different aspects of perceived oral health.