A randomized clinical trial was conducted to determine the efficacy of mastoid obliteration in controlling persistent ear discharge, wax accumulation, fungal infection and granulation tissue formation in patients with cavity problems following modified radical mastoidectomy (MRM). Thirty patients underwent revision mastoidectomy with mastoid obliteration using a temporoparietal fascial flap. They were then followed up over a one-year period and the stated parameters observed. They were compared with 30 patients with similar complaints who were treated conservatively and kept under observation for 12 months. On follow-up, the number of patients in both the groups suffering from various cavity problems was compared. The chi-squared test was applied to the results and it was determined that there was a significantly lower incidence of discharging ear and formation of granulations in the operative group. However, audiological status, development of otomycosis and wax accumulation did not reveal any significant variation between the two groups.