Evaluation of Postoperative Pain after Pulpectomy using Different File Systems in Primary Teeth: A Systematic Review

Objective: The purpose of this systematic review was to compare the incidence and intensity of postoperative pain after pulpectomy using different instrumentations in primary teeth. Materials and Methods: An extensive literature search in PubMed, Cochrane Library, Science Direct, LILAC, SIGLE, and Google Scholar was performed to identify English language articles with human subjects that evaluated the effects of different instruments on postoperative pain after pulpectomy. Results: The search retrieved 187 references. After screening of the abstracts and articles, based on the inclusion and exclusion criteria, a total of three articles were included in the systematic review. Of the three included studies, two of them had a moderate risk of bias and one showed a high risk of bias. Conclusion: The use of rotary instruments contributed to a lower incidence and intensity of postoperative pain than did the hand instruments in all the three studies. More high-quality randomized clinical trials are needed in this field in future studies to support the evidence.