Hand scaling is the conventional techniques where hand scalers are being used these hand scalers have advantage over other techniques of scaling by providing increased precision and tactile sensation of the clinician which further results in patient’s better treatment outcomes. Magnification is the advanced equipment used which increase the hand-eye coordination for better results. The aim of this study is to assess the periodontal treatment outcome before and after manual scaling executed by conventional method and surgical operating microscope and to evaluate the ergonomic benefit of the clinician and patient comfort levels in both the groups. Materials and method: A split mouth study is conducted for 50 patients where all the 50 patients underwent scaling and were divided as group A and group B, where scaling procedure was done in conventional procedure and under surgical operation microscope (SOM). Plaque index (PI), gingival index (GI), Bleeding index (BI) and probing pocket depths (PPD) were assessed from baseline to 4 weeks and a questionnaire was given to the clinician and the patients to assess their comfort levels. Results: The results of our study have shown no significant difference in the intra and inter group for PI and GI and intra group for BI and PPDs, whereas a significant reduction is observed in BI under magnification and in PPDs in conventional approach. The ergonomics of the clinician and the patient’s pain perception, satisfaction levels and comfort levels under the surgical operating microscope had also shown positive response when the treatment was performed under surgical operating microscope. Conclusion: Even though there has been better treatment outcomes and increased ergonomics under SOM than the conventional approach, still further studies has to be carried out to analyse the importance of the usage of microscope