Root canal treatment was completed in two visits. Before treatment, each patient was given pain scale chart and was asked to record their pain level. The tooth was anesthetized using inferior alveolar nerve block technique by local anesthesia of 1.8 - 3.6 ml of 2% Mepivacaine HCl. The access cavity preparation was performed using round carbide bur and Endo-z bur. After access cavity in the intervention group, all occlusal contacts on the functional and non-functional cusps as well as on the marginal ridges were reduced using a wheel diamond bur. Absence of contact was confirmed using an articulating paper. In the control group, all occlusal contacts were left intact. The tooth was then properly isolated with rubber dam. The patency of the root canals was confirmed using stainless steel hand K-files size #10 and #15. Working length was determined using an electronic apex locator and confirmed radiographically to be 1 mm shorter than radiographic apex. Mechanical preparation was done by crown-down technique using rotary Revo-S instruments and Ethylene Diamine Tetra Aceticacid gel as a lubricant. The canals were thoroughly irrigated using 3ml of 2.5% sodium hypochlorite following each instrument. After dryness of the canals using paper points, a cotton pellet was placed in the pulp chamber and the access cavity was sealed with a temporary filling. After 7 days, the root canals were obturated with lateral condensation technique using 0.04 taper gutta-percha and AdSeal resin-based root canal sealer.