Effect of foraminal enlargement on microcrack formation and apical transportation: a nano-CT assessment

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dc.contributor.authorPinto, Jader Camilo [UNESP]
dc.contributor.authorde Faria-Vasconcelos, Karla
dc.contributor.authorLeite, André Ferreira
dc.contributor.authorPedano, Mariano Simón
dc.contributor.authorGuerreiro-Tanomaru, Juliane [UNESP]
dc.contributor.authorJacobs, Reinhilde
dc.contributor.authorTanomaru-Filho, Mario [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversity Hospitals Leuven
dc.contributor.institutionUniversity of Brasília
dc.contributor.institutionDentistry
dc.contributor.institutionKarolinska Institutet
dc.date.accessioned2023-07-29T13:47:49Z
dc.date.available2023-07-29T13:47:49Z
dc.date.issued2023-12-01
dc.description.abstractThe aim of this study was to evaluate the foraminal enlargement and its influence on microcrack formation and apical transportation in root canals with apical curvature. Eighteen maxillary lateral incisors with apical curvature were selected by using micro-CT images. Root canals were randomly divided in two groups (n = 9) according to root canal preparation using two working lengths: 1 mm short of the apical foramen (control group) and 1 mm beyond the apical foramen (foraminal enlargement). For both groups Reciproc Blue R40 was used for root canal instrumentation. Specimens were scanned by nano-CT (UniTOM HR) before and after root canal preparation. Percentage, length, and width of microcracks, and apical transportation were assessed. Kappa, chi‐square and McNemar tests were used for qualitative analyses while paired and unpaired t-test were used for quantitative analyses (α = 0.05). For both groups, rather similar and low percentages of microcracks were observed before root canal preparation (P > 0.05). The foraminal enlargement promoted new microcracks, not observed in the control group. An increase in microcrack length was observed when the foraminal enlargement was performed (P < 0.05). Higher apical transportation was observed when foraminal enlargement was performed (P < 0.05). Foraminal enlargement using a heat-treated reciprocating file size 40 promoted microcracks and higher apical transportation than root canal preparation up to 1 mm short of apical foramen.en
dc.description.affiliationDepartment of Restorative Dentistry Araraquara Dental School São Paulo State University (UNESP) School of Dentistry, Rua Humaitá, 1680, SP
dc.description.affiliationOMFS IMPATH Research Group Department of Imaging and Pathology Faculty of Medicine KU Leuven and Oral and Maxillofacial Surgery University Hospitals Leuven
dc.description.affiliationDepartment of Dentistry Faculty of Health Sciences University of Brasília
dc.description.affiliationDepartment of Oral Health Sciences Endodontology and BIOMAT-Biomaterials Research Group KU Leuven (University of Leuven) UZ Leuven (University Hospitals Leuven) Dentistry
dc.description.affiliationDepartment of Dental Medicine Karolinska Institutet
dc.description.affiliationUnespDepartment of Restorative Dentistry Araraquara Dental School São Paulo State University (UNESP) School of Dentistry, Rua Humaitá, 1680, SP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: FAPESP (2019/22885-0)
dc.identifierhttp://dx.doi.org/10.1038/s41598-023-31595-8
dc.identifier.citationScientific Reports, v. 13, n. 1, 2023.
dc.identifier.doi10.1038/s41598-023-31595-8
dc.identifier.issn2045-2322
dc.identifier.scopus2-s2.0-85150945010
dc.identifier.urihttp://hdl.handle.net/11449/248576
dc.language.isoeng
dc.relation.ispartofScientific Reports
dc.sourceScopus
dc.titleEffect of foraminal enlargement on microcrack formation and apical transportation: a nano-CT assessmenten
dc.typeArtigo
unesp.author.orcid0000-0003-2023-1589[1]
unesp.author.orcid0000-0002-0351-3683[2]
unesp.author.orcid0000-0002-7803-4740[3]
unesp.author.orcid0000-0002-7686-4476[4]
unesp.author.orcid0000-0003-0446-2037[5]
unesp.author.orcid0000-0002-3461-0363[6]
unesp.author.orcid0000-0002-2574-4706[7]

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Artigos - Odontologia Restauradora - FOAR