Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/joor.12519 This article is protected by copyright. All rights reserved. DR. SAYNA SHAMSZADEH (Orcid ID : 0000-0001-6688-3430) Article type : Review Title: The efficacy of non-narcotic analgesics on postoperative endodontic pain: A systematic review and meta-analysis Subtitle: The efficacy of non-steroidal anti-inflammatory drugs and/or paracetamol on postoperative endodontic pain Armin Shirvani 1 , Sayna Shamszadeh 2* , Mohammad Jafar Eghbal 2 , Saeed Asgary 1 1- Iranian Center for Endodontic Research, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Science, Tehran, Iran 2- Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Science, Tehran, Iran Correspondence: Dr. Sayna Shamszadeh, Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Science, Evin, Postal code: 1983963113, Tehran, Iran. Tel: +98 21 22413897, Fax: +98 21 22427753 Email: saynashams@gmail.com