Objective: The study's objective was to assess the private dental practitioners in Ghaziabad city's knowledge, attitudes, and preventative dental practices. Materials and Methods: A self-administered, closed-ended, and structured questionnaire with 40 items was used to conduct a descriptive cross-sectional study. The sampling frame of the study consisted of a total of 162 available private dental practitioners from the IDA list of Ghaziabad city, of which 104 participated. The software packages IBM SPSS Statistics version 25.0 and Microsoft Excel were used to statistically analyze the data gathered. Pearson's test and the Chi-square test were used for statistical evaluation. Results: This questionnaire survey included 104 dental practitioners in total, with 54.2% of them being female. The likelihood of remineralization in initial carious lesions was generally understood by dentists in 87.57% of cases. The mean was determined to be 14.47 ± 2.59 for age under 30 and 15.75 ± 2.39 for age over 30. The results were found to be very significant (P = 0.011) when knowledge was compared in respect to age distribution. Conclusions: The majority of dentists adopted preventive practices in their practices and had excellent attitudes toward preventive dentistry.