The effect of complete denture renewal on oral health was evaluated both subjectively and clinically at follow-up 30 months (range 19-36 months) after completion of treatment in 42 edentulous patients (31 women and 11 men, aged 34-76 years) treated by dental students during 1989-1992. Ninety per cent of the patients were satisfied with the new appearance of their dentures and 71% with the way they functioned. When comparing the base data and results from follow-up it seems that general health and medication, anatomical circumstances, salivary flow rates and denture wearing habits in edentulous subjects do not change significantly over a few years. The main effects of denture renewal are seen in patient satisfaction, and clinically in the improved condition of oral mucosa and better fit and acceptable occlusion of dentures.