To determine the existing complete denture wearer’s knowledge and attitude regarding behaviour habits towards their prosthesis and to re-evaluate any change in knowledge, attitude and practice after delivering educational demonstrations on denture use after six months. Method: A total of 200 patients irrespective of their gender were included in the study. The questionnaire included information on age, length and use of prosthesis. Results: 30.5% subjects were completely edentulous for more than 5 years, 20% had been using their dentures for more than 5 years. 29% subjects did not remove their dentures at night. After the educational program, 3% still wore the dentures during sleep at night. There was only a 3% increment in subjects using the dentures for mastication and speech. Percentage of subjects wearing their dentures for more than 12 hours a day rose from 43.3% to 78.5%. Conclusion: Most of the patients evaluated had limited knowledge about complete denture care. The change in behaviour and attitude was also observed towards the prosthesis during the study period. Thus it was clear that detailed instructions and frequent recall visits play a pivotal role in maintenance of not only denture hygiene but also well-being of the patient. The study was to evaluate the change in behaviour and attitude. No other variable like effect of age, sex, socioeconomic status, education, profession was taken into account. Further studies should be conducted in a more explicit manner explaining the effect of each of this variable on the educational lectures.