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Abstract The presence of plaque and calculus on the tooth surface can be an indicator of oral environment condition and status. Periodontal treatment plays an important role, especially in maintaining the salivary pH in a normal value. Hence, scaling treatment is expected to give a significant change to the salivary pH after the procedure. The aim of this study is to assess and compare the salivary pH before and after scaling treatment. This was a comparative study reporting on 30 saliva samples. Samples were taken by collecting stimulated whole saliva before and after 7 days of scaling treatment. After obtaining the sample, the saliva pH was immediately tested using a portable digital pH meter. The collected data was tabulated in Microsoft Excel 2019, then it was exported to statistical software SPSS for statistical analysis to calculate the mean and p value for each category. The Mean ± SD value of pre-scaling pH and post-scaling pH is 6.957 and 7.103 respectively. Results showed a significant change in salivary pH before and after scaling treatment with the p value of <0.001. The removal of plaque and calculus procedure by means of scaling treatment marked a significant change in salivary pH.