Introduction: Root canal treatment (RCT) is a common procedure in dentistry. In recent year, single visit RCT has gained increased acceptance as a treatment procedure of RCT. One of the problem of RCT is post obturation pain. Objectives: This study was conducted to determine the incidence of post obturation pain related to single visit RCT in asymptomatic non-vital single rooted teeth. Methods: A total 60 cases of endodontically involved asymptomatic non-vital single rooted teeth without any evidence of periapical radiolucency in radiograph, were selected for this study. The canals of all teeth were prepared and filled using the standarized preparation and lateral condensation filling technique. The frequency of post obturation pain was recorded as no pain, slight, moderate and severe pain and evaluated at the day l and at the day 7 after obturation. Result: Out of the 60 patients involved in the study, 37 patients had no pain, 12 patients had slight pain and 11 patients had moderate pain at the day 1 after post obturation. At the day 7 after post obturation, 50 patients had no pain, 8 patients had slight pain and 2 patients had moderate pain. No one showed severe pain in both follow up days. Conclusion: Statistically significant differences were found in the incidence and degree of pain between two follow up days. Incidence of pain was more in 1 st post obturation day and decreased thereafter.

Objectives : The purpose of the present study was to asses the incidence and severity of pain after single and two visit Root Canal Treatment ( RCT ) / endodontic treatment in asymptomatic non vital single rooted maxillary teeth. Methods : Eighty one cases of endodontically involved asymptomatic, non vital, single rooted maxillary teeth without evidence of periapical radiolucency in radiograph were selected for this study. The patient were divided into two treatment group. In single visit group, all teeth were prepared and filled using the standardized preparation and lateral condensation filling technique. In the two visit treatment group, at the first appointment, the teeth were prepared and dressed with calcium hydroxide paste for 7 days. At the second appointment, the teeth were prepared and obturated by using lateral condensation technique. The frequency of post obturation pain was recorded as no pain, slight/ mild, moderate and severe pain and evaluated at the day 1 and at the day 7 after obturation. The data were analyzed statistically by using SPSS version 16. p-value <0.05 was taken as significant. Results : No significant difference in post obtuation pain was found in between single and two visit RCT in maxillary teeth. At the day 1 and 7 after obturation, single visit (n= 41) group and two visit (n=40) group similarly experienced moderate pain (2.5% and 1.1% respectively in both group). At day 1 and 7 after obturation, mild pain is more in single visit than two visit group. However, there was no statistically significant difference in pain between the two groups. No one experienced severe pain in two groups. Conclusion: The incidence and severity of post obturation pain did not differ between single and two visit RCT in asymptomatic non vital single rooted maxillary teeth.