Boel T, Kartika D, Liliana L. Root Canal Configuration Of Permanent Mandibular First Molars Using Radiographic Tube Shift Technique On Dentistry Student Of University Of Sumatera Utara. imjm [Internet]. 2017 Dec. 1 [cited 2024 Apr. 23];16(2). Available from: https://journals.iium.edu.my/kom/index.php/imjm/article/view/1098