LAUSR

INTRODUCTION This retrospective study analysed the twelve-month pulp sensibility (cold and electric) test response following mineral trioxide aggregate (MTA) full pulpotomy in mature permanent teeth with symptomatic irreversible pulpitis. METHODS Records of 120 subjects from three completed and one ongoing clinical study on MTA full pulpotomy were retrieved. Ninety-six first and second mandibular molar teeth with a diagnosis of symptomatic irreversible pulpitis which underwent a single visit MTA full pulpotomy and had completed a twelve months clinical, radiographic and pulp sensibility (cold and electric) tests follow-up were included. The data were analysed using the Fischer's exact test, Pearson chi-square test and McNemar's test. The significance level was predetermined at p<0.05. RESULTS Higher percentage of teeth (94.7%) responded to the electric pulp test in comparison to the cold test (13.5%) (p<0.05).Gender -based responses to the electric pulp (p>0.05) and cold test were similar (p>0.05). Age- based response was similar for electric pulp test (p>0.05) but was significant for cold test (p<0.05). The tooth quadrant (left and right), the tooth (mandibular first and second molar) and the location of restoration (proximal or occlusal) did not influence the response of either electric pulp (p >0.05) or cold test (p>0.05). At one year follow-up, all the teeth that were classified as clinically and radiographically successful responded to the electric pulp test; however, only thirteen teeth responded to the cold test (p=0.00). CONCLUSION Majority (94.7%) of the teeth that underwent MTA full pulpotomy responded to the electric pulp test at a one-year time interval.