{"title":"Multidimensional Analysis of Canal Transportation and Centering Ability of WaveOne Gold and ProTaper Next File Systems in Curved Root Canals.","authors":"Syeda Abeerah Tanveer, Robia Ghafoor","doi":"10.22037/iej.v21i1.44573","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>Advances in endodontic instrumentation are centered around innovation of variable metallurgy and designs of endodontic files to reduce procedural errors. However, there is a lack of consensus in the literature with regard to the shaping ability of WaveOne Gold (WOG) and ProTaper next (PTN) endodontic file systems in the curved root canals. This study aimed to measure and compare the amount of canal transportation (CT) and centering ability (CA) in the coronal, middle, and apical thirds of root canals prepared using the WOG file and PTN system using cone-beam computed tomography (CBCT).</p><p><strong>Materials and methods: </strong>A total of sixty single-rooted teeth with Type I Vertucci canal and moderate 10-30<sup>°</sup> canal curvature according to AAE guidelines were collected and divided into two groups: Group 1: WOG system, Group 2: PTN. Baseline and post-operative CBCT scans were obtained for all the specimens using the same exposure parameters. The CT and CA of each root canal at 3, 6, and 9 mm, corresponding to the coronal, middle, and apical third, were calculated. The data was analyzed using SPSS. The level of significance was kept at 0.05.</p><p><strong>Results: </strong>At the 6 mm level, The WOG system exhibited statistically less canal transportation (CT) in mesio-distal dimension compared to PTN (<i>P</i>=0.005). The direction of transportation was predominantly towards the distal and lingual aspects for both systems. The centering ability (CA) of WOG was statistically higher than that of PTN at 9 mm level (<i>P</i>=0.023). However, all measured transportation values for both systems fell within the clinically acceptable threshold of <0.15 mm.</p><p><strong>Conclusion: </strong>Within the limitations of this <i>in vitro</i> study, both the WOG and PTN Next file systems prepared moderately curved root canals with clinically acceptable accuracy, maintaining canal transportation within a safe range. The observed statistical differences are of uncertain clinical significance given the measurement resolution of CBCT.</p>","PeriodicalId":14534,"journal":{"name":"Iranian Endodontic Journal","volume":"21 1","pages":"e21"},"PeriodicalIF":0.0000,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13332815/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Endodontic Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22037/iej.v21i1.44573","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/6/22 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"Dentistry","Score":null,"Total":0}
引用次数: 0
Abstract
Introduction: Advances in endodontic instrumentation are centered around innovation of variable metallurgy and designs of endodontic files to reduce procedural errors. However, there is a lack of consensus in the literature with regard to the shaping ability of WaveOne Gold (WOG) and ProTaper next (PTN) endodontic file systems in the curved root canals. This study aimed to measure and compare the amount of canal transportation (CT) and centering ability (CA) in the coronal, middle, and apical thirds of root canals prepared using the WOG file and PTN system using cone-beam computed tomography (CBCT).
Materials and methods: A total of sixty single-rooted teeth with Type I Vertucci canal and moderate 10-30° canal curvature according to AAE guidelines were collected and divided into two groups: Group 1: WOG system, Group 2: PTN. Baseline and post-operative CBCT scans were obtained for all the specimens using the same exposure parameters. The CT and CA of each root canal at 3, 6, and 9 mm, corresponding to the coronal, middle, and apical third, were calculated. The data was analyzed using SPSS. The level of significance was kept at 0.05.
Results: At the 6 mm level, The WOG system exhibited statistically less canal transportation (CT) in mesio-distal dimension compared to PTN (P=0.005). The direction of transportation was predominantly towards the distal and lingual aspects for both systems. The centering ability (CA) of WOG was statistically higher than that of PTN at 9 mm level (P=0.023). However, all measured transportation values for both systems fell within the clinically acceptable threshold of <0.15 mm.
Conclusion: Within the limitations of this in vitro study, both the WOG and PTN Next file systems prepared moderately curved root canals with clinically acceptable accuracy, maintaining canal transportation within a safe range. The observed statistical differences are of uncertain clinical significance given the measurement resolution of CBCT.
期刊介绍：
The Iranian Endodontic Journal (IEJ) is an international peer-reviewed biomedical publication, the aim of which is to provide a scientific medium of communication for researchers throughout the globe. IEJ aims to publish the highest quality articles, both clinical and scientific, on all aspects of Endodontics. The journal is an official Journal of the Iranian Center for Endodontic Research (ICER) and the Iranian Association of Endodontists (IAE). The Journal welcomes articles related to the scientific or applied aspects of endodontics e.g. original researches, systematic reviews, meta-analyses, review articles, clinical trials, case series/reports, hypotheses, letters to the editor, etc. From the beginning (i.e. since 2006), the IEJ was the first open access endodontic journal in the world, which gave readers free and instant access to published articles and enabling them faster discovery of the latest endodontic research.
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