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Introduction: Impacted Mandibular third molars are the major oral health problem. Despite the introduction of modified surgical techniques and improved precision in control of soft and hard tissues, that reduces post operative sequelae; there still exists various unavoidable complications after surgery. Impacted lower third molar surgery is commonly associated with trismus, swelling and pain. Material and Method: In this study, 50 cases with bilaterally impacted third molars have been randomly divided into two groups irrespective of caste, creed and gender. Group A- Cases for TENS therapy Group B- Control group Result: TENS therapy and control group showed almost equal effect on pain at each day, as P value >0.05. On comparing both the groups for swelling, TENS group showed better results as compared to Control group with P value <0.05, on horizontal measurement of swelling and vertical measurement of swelling at each day. TENS therapy showed better results on mouth opening during the course of therapy on day 1, day 3and day 7 when compared with control group, with the P-value<0.05, On day 15 difference of mean was zero that means complete mouth opening was achieved. Conclusion: In our study it has shown that groups are equally effective in managing pain after extraction of impacted lower third molar. TENS therapy showed better results in controlling postoperative sequelae during course of healing.