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This in vitro cone-beam computed tomography (CBCT) study compared the retrieval of Endoseal MTA, AH Plus, and MTA Fillapex during endodontic retreatment. Forty-five radiographically confirmed single-rooted single-canal mandibular premolars were prepared, assigned to three sealer groups, obturated, and then treated with chloroform solvent and a retreatment rotary system. Residual sealer volume was quantified on axial CBCT sections with Gaussian/nonlinear diffusion noise reduction and MATLAB analysis. Results showed significant intergroup differences (P\u003C0.001), with the highest residual volume for Endoseal MTA and a higher residual volume than MTA Fillapex, while AH Plus comparisons were not significant.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/retrieval-of-ah-plus-mta-fillapex-and-endoseal-mta-in-endodontic-retreatment-an-in-vitro-cone-beam-computed-tomography-study/432826/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/retrieval-of-ah-plus-mta-fillapex-and-endoseal-mta-in-endodontic-retreatment-an-in-vitro-cone-beam-computed-tomography-study/432826.png","ImageObject",300,407,{"name":92,"@type":93},"Alexandar","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":56},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What was the study’s main objective?","Question",{"text":112,"@type":113},"To compare the retrieval (retrievability) of Endoseal MTA, AH Plus, and MTA Fillapex during endodontic retreatment using CBCT.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How were residual sealer volumes evaluated?",{"text":117,"@type":113},"After retreatment, roots were scanned by CBCT with Gaussian and nonlinear diffusion filters for noise reduction, and residual sealer volume was quantified on axial CBCT sections using MATLAB analysis.",{"name":119,"@type":110,"acceptedAnswer":120},"Which sealer showed the greatest residual volume, and how did it compare to others?",{"text":121,"@type":113},"Endoseal MTA showed the highest residual sealer volume (2.70±2.41 mm³). Its residual volume was significantly greater than MTA Fillapex, while differences involving AH Plus were not significant.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},432826,1790694037,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":56,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":39,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":46,"preview_page_count":4},962090768658,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Retrieval of AH Plus, MTA Fillapex, and Endoseal MTA in Endodontic Retreatment: An in Vitro Cone-Beam Computed Tomography Study  \nSalma Omidi 1,2, Sadaf Rahmanirad3, Ali Jafari3, Mahmood Moosazadeh4, Hadis Abbaspourrokni2, Mona Alimohammadi*5  \n1. Dental Research Center, Mazandaran University of Medical Sciences, Sari, Iran  \n2. Department of Endodontics, School of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran  \n3. Private practice, Sari, Iran  \n4. Gastrointestinal Cancer Research Center, Non-Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran  \n5. Department of Oral and Maxillofacial Radiology, School of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran  \n\n| Article Info | A B S T R A C T |\n| --- | --- |\n| Article type:\u003Cbr>Original Article | Objectives: Retrievability is an important characteristic for an endodontic sealer. This study compared the retrieval of Endoseal MTA, AH Plus, and MTA Fillapex in endodontic retreatment using cone-beam computed tomography (CBCT) . |\n|  | Materials and Methods: This in vitro study was conducted on 45 radiographically confirmed single-rooted and single-canal mandibular premolars. The root canals were instrumented by the Denco Universal rotary |\n| Article History: |  |\n| Received: 20 Aug 2024 | system up to size F3, and randomly divided into 3 groups for the application |\n| Accepted: 29 Mar 2025 | of either AH Plus, Endoseal MTA, or MTA Fillapex and subsequent root canal |\n| Published: 20 Sep 2025 | obturation. Next, the root filling materials were removed using chloroform |\n|  | solvent and Denco Universal retreatment rotary system. The roots then |\n|  | underwent CBCT with the Gaussian and nonlinear diffusion filters for noise reduction. The residual sealer volume on the root canal walls was quantified on axial CBCT sections using MATLAB R2012 version 14 software. Data were |\n| * Corresponding author: |  |\n| Department of Oral and Maxillofacial | analyzed by the Kruskal-Wallis and Dunn tests (alpha=0.05) . |\n| Radiology, School of Dentistry, Mazandaran University of Medical Sciences,\u003Cbr>Sari, Iran [Email:](Email: mona_y28 @yahoo.com)[ ](Email: mona_y28 @yahoo.com)[mona_y28 @yahoo.com](Email: mona_y28 @yahoo.com) | Results: The residual sealer volume was significantly different among the three groups (P\u003C0.001) and was the highest in Endoseal MTA (2.70±2.41mm3 ) . The residual volume of Endoseal MTA sealer was significantly greater than MTA Fillapex (P=0.009) . However, the difference between AH Plus and Endoseal MTA (P=0.592), or AH Plus and MTA Fillapex (P=0.352) was not significant. Conclusion: Within the limitations of this in vitro study and considering the residual sealer volume, retrieval of Endoseal MTA was comparable to that of AH Plus, and lower than that of MTA Fillapex in endodontic retreatment.\u003Cbr>Keywords: Epoxy Resin-Based Root Canal Sealer; Cone-Beam Computed Tomography; Retreatment |\n| 􀂾 Cite this article as: Omidi S, Rahmanirad S, Jafari A, Moosazadeh M, Abbaspourrokni H, Alimohammadi M. Retrieval of AH Plus, MTA Fillapex, and Endoseal MTA in Endodontic Retreatment: An In Vitro Cone-Beam Computed Tomography Study. Front Dent. 2025:22:38. [http://doi.org/10.18502/fid.v22i38.19801](http://doi.org/10.18502/fid.v22i38.19801) |  |\n\nINTRODUCTION  \nNon-surgical endodontic retreatment is the first and most popular treatment option for  \na failed primary endodontic treatment. As part of this procedure, the root filling material is completely removed, and the  \ncanal is biochemically cleaned, disinfected, and obturated again [1] . It is essential to remove all the root filling material with noor minimal residues during the retreatment process to avoid periapical inflammation. The new root filling material's sealing ability is also decreased by residual components. Root filling materials can be successfully removed by various methods developed for this purpose; however, such methods cannot completely remove the enti","cbCailkErvjs9ILr","https://ap.wps.com/l/cbCailkErvjs9ILr","pdf",1577007,"English","# Article Info\n## Article type\n# Article History\n# Materials and Methods\n## Study design and specimens\n## Retreatment and CBCT analysis\n# Results\n## Residual sealer volume comparisons\n# Conclusion\n# Introduction","[{\"question\":\"What was the study’s main objective?\",\"answer\":\"To compare the retrieval (retrievability) of Endoseal MTA, AH Plus, and MTA Fillapex during endodontic retreatment using CBCT.\"},{\"question\":\"How were residual sealer volumes evaluated?\",\"answer\":\"After retreatment, roots were scanned by CBCT with Gaussian and nonlinear diffusion filters for noise reduction, and residual sealer volume was quantified on axial CBCT sections using MATLAB analysis.\"},{\"question\":\"Which sealer showed the greatest residual volume, and how did it compare to others?\",\"answer\":\"Endoseal MTA showed the highest residual sealer volume (2.70±2.41 mm³). Its residual volume was significantly greater than MTA Fillapex, while differences involving AH Plus were not significant.\"}]","Retrieval of AH Plus, MTA Fillapex, and Endoseal MTA in Endodontic Retreatment - An In Vitro Cone-Beam Computed Tomography Study | PDF",1790661527]