Aim: The aim of this study is to determine the awareness of fluoride containing tooth paste among the adult patients. Objective: The main objective is to know the patients knowledge about fluoride containing tooth paste and its benefits in prevention of caries. Background: The role of fluoride is well documented in the caries process when it is present in the oral cavity. This study helps in assessing patients knowledge about fluoride containing tooth paste and its effects in prevention. Thereby this study also gives us an idea of whether they could be educated further about fluoride tooth paste. Materials and Methods: Patients seeking for dental treatment in Saveetha dental college were included for this study. The questionnaire was prepared in two languages, both Tamil and English. A total of 150 participants (convenient sample) were included in the study. The questionnaire were distributed in the waiting area of the clinics and the patients were given enough time to fill up the questionnaire. Then the questionnaire was collected back and the data was assessed. Conclusion: As fluoride has been found to be more effective in preventing caries, knowledge about fluoride and also about fluoride containing tooth paste is a must for the patients. This study helps is increasing the awareness for the patients about the fluoride in tooth paste.