Three years after providing an oral health education program (OHEP) to nursing personnel, the authors analyzed the effect of the program on knowledge of the importance of oral health and on perception among the nurses of the possibility to implement oral care in patient care. The study was based on a cross-sectional survey of all nursing personnel (N = 2,901) in five municipalities in the Southwestern Sweden, of whom 950 had attended four one-hour lessons during an OHEP in 1996. The response rate to the survey questionnaire was 67% (1,930 subjects). Statistical analysis was performed by means of descriptive and analytical statistics. The program was shown to have an independent effect on the dependent variables "knowledge of oral health" and "assessment of implementation possibilities," This study has given further evidence of the feasibility of an educational program to improve both knowledge and implementation of oral health care.