Management of radix entomolaris of mandibular first molar with complex root canal curvatures; A case report and mini reviewRunning title: Managing Radix Entomolaris with complex root canal curvaturesAli Chamani1, Maryam Gharechahi2, Reza Shakiba3, Farshad Alipour3*Department of Endodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, IranAssociate Professor of Endodontics, Department of Endodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, IranStudent research committee, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran*­ Corresponding author:Farshad Alipour Student research committee, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, IranTel: +98 915 536 5508Email: farshada2563@gmail.comOrcid: 0009-0007-1021-5944Address: Department of Endodontics, School of Dentistry, Vakil Abad Blv, Azadi Square