https://publish.kne-publishing.com/index.php/fid <p><strong><em>Frontiers in Dentistry (Formerly known as :Journal of Dentistry of Tehran University of Medical Sciences (JDT))</em></strong>&nbsp;is the first Iranian dental journal in English.&nbsp;<strong><em>FD</em></strong>&nbsp;is an Open Access,&nbsp;Peer-Reviewed bimonthly journal published by Dental Research Center (DRC) of Tehran University of Medical Sciences which is a dynamic, rapidly growing research center.</p> <p>The Journal aims to publish novel and high quality relevant information written by peers to researchers and readers involved in all fields of dentistry, oral health sciences and related&nbsp;<span dir="LTR">interdisciplinaries,&nbsp;</span>strives to keep pace with the rapid growth of publications, and move on to the edge of knowledge in this field.</p> <p><strong data-stringify-type="bold">All the manuscripts should be submitted through the Journal Primary Website at <a href="https://fid.tums.ac.ir/index.php/fid/about/submissions">https://fid.tums.ac.ir/index.php/fid/about/submissions</a></strong></p> Tehran University of Medical Sciences en-US Frontiers in Dentistry 2676-296X https://publish.kne-publishing.com/index.php/fid/article/view/22049 <p><strong>Objectives: </strong>The purpose of this study was to compare ProTaper Gold, Edge Taper Platinum, and V-Taper Gold regarding transportation, centering ability, remaining dentin thickness at the danger zone, and surface changes.</p> <p><strong>Materials and Methods: </strong>Sixty extracted human mandibular and maxillary first molars were used in this in vitro study. Pre-instrumentation cone-beam computed tomography (CBCT) scanning of all teeth was performed; canal curvatures were calculated, and the samples were randomly allocated into three groups for root canal instrumentation with ProTaper Gold, Edge Taper Platinum, and V-Taper Gold. Post-instrumentation scans were obtained, and the two scans were compared to determine canal transportation, centering ability, and remaining dentin thickness. Surface changes were assessed with scanning electron microscopy (SEM) in the three groups. Data were analyzed using the Shapiro-Wilk test, Kruskal-Wallis test, and one-way ANOVA, as appropriate. The significance level was set at 0.05.</p> <p><strong>Results: </strong>No significant difference was found among the three groups regarding canal transportation (P&gt;0.05), centering ability (P&gt;0.05), or the amount of removed dentin (P&gt;0.05). The mean remaining dentin thickness was more than the acceptable minimum in all three groups. In quality assessment of the files, no fracture, opening, or overlapping of the flutes was seen.</p> <p><strong>Conclusion:</strong> Based on the findings of the present study, the Edge Taper Platinum and V-Taper Gold rotary systems prepared the mesiobuccal canals of first molars similar to the ProTaper Gold system.&nbsp;</p> Armita Rouhani Neda Naghavi Monireh Khorasani Maryam Peighoun Copyright (c) 2026 Frontiers in Dentistry 2026-07-18 2026-07-18 10.18502/fid.v23i21.22049