Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments

The aim of this study was to compare the sizes of the implant-abutment microgap in Morse taper implants with a straight abutment (ISA group) and Morse taper implants with an angled abutment (IAA group). A total of 19 Morse taper dental implants (3.8 . 11.0 mm) were used with their respective abutmen...

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Autores: Costa, Mariana Bispo, Ferreira, Lorena Fernandes, Marqueti, Antonio Carlos, Takeshita, Wilton Mitsunari [UNESP], Trento, Cleverson Luciano
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/306354
Acesso em linha:https://hdl.handle.net/11449/306354
Access Level:acceso abierto
Palavra-chave:dental abutments
dental implants
scanning electron microscopy
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spelling Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutmentsdental abutmentsdental implantsscanning electron microscopyThe aim of this study was to compare the sizes of the implant-abutment microgap in Morse taper implants with a straight abutment (ISA group) and Morse taper implants with an angled abutment (IAA group). A total of 19 Morse taper dental implants (3.8 . 11.0 mm) were used with their respective abutments; 10 abutments were angled at 20°, and 9 were straight. The implant-abutment units were immersed in an epoxy resin to form a base and then crosssectioned until about 50% of the volume was removed. The specimens were analyzed under a scanning electron microscope, and the size of the microgap was measured at 3 regions on each side of the implant, for a total of 6 measurements per specimen. Mann-Whitney U and Kruskal-Wallis tests were used for statistical analysis. In the ISA group, there were no statistically significant differences in the median sizes of the microgap at the different regions of the interface (P > 0.05; Kruskal-Wallis test). The mean (SD) values of the largest and smallest microgaps in the ISA group were 1.64 (1.38) and 0.83 (0.41) μm, respectively. In the IAA group, there was a statistically significant difference in the median sizes of the microgaps at the upper and middle regions on the left side (P = 0.031; Kruskal-Wallis test). The mean (SD) values of the largest and smallest microgaps were 1.43 (0.062) and 0.61 (0.27) μm, respectively. Comparison of the different regions in the ISA and IAA groups revealed that the only statistically significant difference was at the lower region on the right side (P = 0.027; Mann-Whitney U test). The sizes of the microgaps in the ISA and IAA groups were statistically similar in an overall analysis (P > 0.05; Mann-Whitney U test); however, the IAA group showed greater sealing ability. In addition, in both groups in vitro titanium oxide formation was observed at the interface, characterizing a type of coldweld joint that provides effective implant-abutment sealing.Department of Dentistry Federal University of SergipePiracicaba School of Dentistry State University of Campinas (UNICAMP)School of Dentistry São Paulo State University (UNESP)School of Dentistry São Paulo State University (UNESP)Universidade Federal de Sergipe (UFS)Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (UNESP)2025-04-29T20:06:01Z2022-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article34-39General Dentistry, v. 70, n. 6, p. 34-39, 2022.0363-6771https://hdl.handle.net/11449/3063542-s2.0-85140856470Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGeneral Dentistryinfo:eu-repo/semantics/openAccessCosta, Mariana BispoFerreira, Lorena FernandesMarqueti, Antonio CarlosTakeshita, Wilton Mitsunari [UNESP]Trento, Cleverson Luciano2025-04-30T14:00:04Zoai:repositorio.unesp.br:11449/306354Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-04-30T14:00:04Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
title Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
spellingShingle Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
Costa, Mariana Bispo
dental abutments
dental implants
scanning electron microscopy
title_short Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
title_full Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
title_fullStr Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
title_full_unstemmed Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
title_sort Scanning electron microscopic evaluation of microgap size in Morse taper implants with straight and angled abutments
dc.creator.none.fl_str_mv Costa, Mariana Bispo
Ferreira, Lorena Fernandes
Marqueti, Antonio Carlos
Takeshita, Wilton Mitsunari [UNESP]
Trento, Cleverson Luciano
author Costa, Mariana Bispo
author_facet Costa, Mariana Bispo
Ferreira, Lorena Fernandes
Marqueti, Antonio Carlos
Takeshita, Wilton Mitsunari [UNESP]
Trento, Cleverson Luciano
author_role author
author2 Ferreira, Lorena Fernandes
Marqueti, Antonio Carlos
Takeshita, Wilton Mitsunari [UNESP]
Trento, Cleverson Luciano
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Sergipe (UFS)
Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (UNESP)
dc.subject.por.fl_str_mv dental abutments
dental implants
scanning electron microscopy
topic dental abutments
dental implants
scanning electron microscopy
description The aim of this study was to compare the sizes of the implant-abutment microgap in Morse taper implants with a straight abutment (ISA group) and Morse taper implants with an angled abutment (IAA group). A total of 19 Morse taper dental implants (3.8 . 11.0 mm) were used with their respective abutments; 10 abutments were angled at 20°, and 9 were straight. The implant-abutment units were immersed in an epoxy resin to form a base and then crosssectioned until about 50% of the volume was removed. The specimens were analyzed under a scanning electron microscope, and the size of the microgap was measured at 3 regions on each side of the implant, for a total of 6 measurements per specimen. Mann-Whitney U and Kruskal-Wallis tests were used for statistical analysis. In the ISA group, there were no statistically significant differences in the median sizes of the microgap at the different regions of the interface (P > 0.05; Kruskal-Wallis test). The mean (SD) values of the largest and smallest microgaps in the ISA group were 1.64 (1.38) and 0.83 (0.41) μm, respectively. In the IAA group, there was a statistically significant difference in the median sizes of the microgaps at the upper and middle regions on the left side (P = 0.031; Kruskal-Wallis test). The mean (SD) values of the largest and smallest microgaps were 1.43 (0.062) and 0.61 (0.27) μm, respectively. Comparison of the different regions in the ISA and IAA groups revealed that the only statistically significant difference was at the lower region on the right side (P = 0.027; Mann-Whitney U test). The sizes of the microgaps in the ISA and IAA groups were statistically similar in an overall analysis (P > 0.05; Mann-Whitney U test); however, the IAA group showed greater sealing ability. In addition, in both groups in vitro titanium oxide formation was observed at the interface, characterizing a type of coldweld joint that provides effective implant-abutment sealing.
publishDate 2022
dc.date.none.fl_str_mv 2022-11-01
2025-04-29T20:06:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv General Dentistry, v. 70, n. 6, p. 34-39, 2022.
0363-6771
https://hdl.handle.net/11449/306354
2-s2.0-85140856470
identifier_str_mv General Dentistry, v. 70, n. 6, p. 34-39, 2022.
0363-6771
2-s2.0-85140856470
url https://hdl.handle.net/11449/306354
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv General Dentistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 34-39
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
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score 15,228081

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