{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T16:51:44Z","timestamp":1786121504720,"version":"build-2736575974"},"reference-count":37,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust Endodontic J"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    This study evaluated the effects of kinematics (reciprocating vs. continuous rotation) and rotational speed (350 vs. 1200\u2009rpm) on filling removal, canal transportation, and apical extrusion during retreatment of curved root canals. Vertucci type II mesial roots of mandibular molars were prepared, filled, and scanned by micro\u2010computed tomography (micro\u2010CT). After 30\u2009days, specimens were assigned to four groups (\n                    <jats:italic>n<\/jats:italic>\n                    \u2009=\u200915): WOrec, WOctn, PF350, and PF1200. Retreatment time was recorded, and micro\u2010CT was used to assess filling removal, canal transportation, and apical extrusion. Data were statistically evaluated and revealed that all systems significantly reduced the amount of filling material (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05). PF1200 and WOctn showed superior removal compared with PF350 and WOrec, respectively (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05). No differences were observed in extrusion (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&gt;\u20090.05). Increased canal transportation occurred only in the mesiolingual canal with WOctn and PF1200 (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009&lt;\u20090.05). Higher speed and continuous rotation improved efficiency without increasing extrusion but resulted in greater transportation.\n                  <\/jats:p>","DOI":"10.1111\/aej.70110","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T08:18:22Z","timestamp":1784621902000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of Kinematics and Speed on Filling Material Removal, Canal Transportation, and Apical Extrusion During Retreatment of Curved Canals"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-3755-6645","authenticated-orcid":false,"given":"Jenny","family":"Guerrero","sequence":"first","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Endodontics Universidad Catolica de Santiago de Guayaquil (UCSG)  Guayaquil Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-4365-2371","authenticated-orcid":false,"given":"Josu\u00e9","family":"Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Endodontics Universidad Catolica de Santiago de Guayaquil (UCSG)  Guayaquil Ecuador"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9922-8202","authenticated-orcid":false,"given":"Fl\u00e1vio R. F.","family":"Alves","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Dental Research, Faculty of Dentistry Igua\u00e7u University (UNIG)  Nova Igua\u00e7u Rio de Janeiro Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4902-8664","authenticated-orcid":false,"given":"Jos\u00e9 C.","family":"Provenzano","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Dental Research, Faculty of Dentistry Igua\u00e7u University (UNIG)  Nova Igua\u00e7u Rio de Janeiro Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7480-0092","authenticated-orcid":false,"given":"Karen M.","family":"Brisson\u2010Su\u00e1rez","sequence":"additional","affiliation":[{"name":"Laboratory of Molecular Microbial Ecology, Institute of Microbiology Paulo de Goes Federal University of Rio de Janeiro  Rio de Janeiro Rio de Janeiro Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2917-5934","authenticated-orcid":false,"given":"Mar\u00edlia F.","family":"Marceliano\u2010Alves","sequence":"additional","affiliation":[{"name":"Department of Dental Research, Faculty of Dentistry Igua\u00e7u University (UNIG)  Nova Igua\u00e7u Rio de Janeiro Brazil"},{"name":"Department of Dental Research Cell Dr. D. 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Patil Dental College and Hospital  Vidyapeeth Pune India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7113-6859","authenticated-orcid":false,"given":"Isabela N.","family":"R\u00f4\u00e7as","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Dental Research, Faculty of Dentistry Igua\u00e7u University (UNIG)  Nova Igua\u00e7u Rio de Janeiro Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7887-8054","authenticated-orcid":false,"suffix":"Jr","given":"Jos\u00e9 F.","family":"Siqueira","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Dentistry University of Grande Rio (UNIGRANRIO)  Rio de Janeiro Rio de Janeiro Brazil"},{"name":"Department of Dental Research, Faculty of Dentistry Igua\u00e7u University (UNIG)  Nova Igua\u00e7u Rio de 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