Effect of three different methods of working length determination during root canal preparation on post operative pain - An in vivo study

Theaim of the present study will be to clinically evaluate the post operative painduring root canal preparation , with three different methods of working lengthpreparation.

Suitable number ofpatients will be selected for this in-vivo study . Single rooted tooth will betaken into consideration for this study . Healthy young patients havingirrerversible pulpitis with  toothpositive to a percussion test , negative to palpation test  and without any periapical lesion or any systemicdisease will be included in this study

Patients which will beexcluded from the study according to the following criteria: those withsystemic diseases, swelling, sinus tract, or preoperative palpation pain , thosehaving bruxism or clenching , a severely damaged tooth, severe periodontaldisease in related tooth or resorption in related tooth , having previouslyundergone root canal treatment in related tooth.

A digital radiograph willbe used to confirm the presence of single root for the tooth to be operated on. Preoperative pulpal diagnosis will be performed by both cold test andElectric pulp test .Periapical diagnosis will be performed by periapical radiographsand percussion and palpation tests  .

Patients will be randomlydistributed into 3 experimental groups viz. Radiographic group, Electronic apex locator group and Simultaneous Prepared Group; with equal number of  patients  in each group. After the root canal preparations , patient will be evaluated for postoperative pain after 24hrs ,48 hrs & 72 hrs respectively , keeping in mindno anaelgesics were given post-operatively before pain evaluation . Patientwill respond for pain after percussion on a designed visual analogue scale forpain.