Aim: The study aims to assess the effect of pre and post Non-Surgical Periodontal Therapy (NSPT) on salivary pH in patients suffering from chronic periodontitis. Materials and Method: Patients reporting to the Department of Periodontics, I.T.S Dental College, Hospital and Research Centre, Greater Noida, Uttar Pradesh are included in the study. It’s a randomized clinical trial where patients are randomized into two groups of generalized chronic gingivitis and generalized chronic periodontitis. The sample size was 30 patients and the period of study was 2 months. Unstimulated saliva is collected at the first visit when a patient reports to the OPD for NSPT. Clinical parameters are recorded and NSPT is performed for the patient. Post 14 days of the treatment, saliva is collected and analyzed for pH and clinical parameters are recorded again. pH is determined using a pH meter. Data is collected and statistically interpreted. Statistical testing to be used is Mann Whitney U Test, Chi-square test, and Paired t-test. Results: There was a statistically significant difference in plaque index, gingival index, and oral hygiene index between the two groups. There was a definite reduction in pH post Scaling and Root Planning (SRP) but it was statistically non-significant due to the relatively smaller sample size. Further research is required to substantiate the results for the same.