Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial

Statement of problem: The implant-abutment interface has been identified as a key factor in preserving peri-implant marginal bone levels. However, current evidence remains insufficient to identify the most suitable connection design since most published studies fail to control critical variables suc...

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Autores: Rubianes-Porta, Laura, Traver Méndez, Valeria, Ghiorghiu, Roxanna, Piera-Auguet, Jordi, Subirà Pifarré, Carles, Barbosa de Figueiredo, Rui Pedro, Valmaseda Castellón, Eduardo, Camps Font, Octavi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/223063
Acceso en línea:https://hdl.handle.net/2445/223063
Access Level:acceso abierto
Palabra clave:Implants dentals
Assaigs clínics
Restauració dental
Dental implants
Clinical trials
Dental Restoration
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spelling Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trialRubianes-Porta, LauraTraver Méndez, ValeriaGhiorghiu, RoxannaPiera-Auguet, JordiSubirà Pifarré, CarlesBarbosa de Figueiredo, Rui PedroValmaseda Castellón, EduardoCamps Font, OctaviImplants dentalsAssaigs clínicsRestauració dentalDental implantsClinical trialsDental RestorationStatement of problem: The implant-abutment interface has been identified as a key factor in preserving peri-implant marginal bone levels. However, current evidence remains insufficient to identify the most suitable connection design since most published studies fail to control critical variables such as the implant surface or design. Purpose: The purpose of this randomized clinical trial was to assess vertical marginal bone loss after 1 year of function of implants with identical macroscopic and microscopic designs and 3 different implant-abutment connections (external hexagon, internal hexagon, and conical) placed in the molar or premolar area. The secondary aims were to assess the mechanical and biological complications after 1 year of function. Material and methods: An open-label, randomized controlled trial with 3 treatment arms was carried out. Participants were assessed at implant placement, prosthesis installation, and after 1 year of loading. The main outcome variable was the distance from the implant shoulder to the marginal bone at the mesial and distal aspect of each implant. Probing depth, plaque index, and bleeding on probing, as well as mechanical or biological complications, were also assessed. A descriptive, bivariate and multivariate analysis (linear models and binary logistic models) of the data was performed. Results: Seventy-five participants with 105 implants were consecutively enrolled and randomized to the external hexagon, internal hexagon, and conical connection groups (35 implants each). The 3 groups had similar baseline features. The distance from the implant shoulder to the marginal bone varied significantly over time (P<.001) but was similar for all groups (P=.152) and followed the same evolution pattern over time (P=.995). Seven failures in 7 participants were registered during the study (3 in external hexagon, 1 in internal hexagon, and 3 in conical connection (P=.356). Conclusions: The implant-abutment connection design did not significantly affect the changes in interproximal bone levels of posterior single-unit implant-supported crowns after 12 months of loading. Furthermore, the risk of developing biological or mechanical complications was similar for all the tested connection designs.Elsevier202520252025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion8 p.application/pdfhttps://hdl.handle.net/2445/223063Articles publicats en revistes (Odontoestomatologia)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1016/j.prosdent.2025.06.022Journal of Prosthetic Dentistry, 2025https://doi.org/10.1016/j.prosdent.2025.06.022cc-by-nc-nd (c) Rubianes-Porta, Laura et al., 2025http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2230632026-05-29T05:05:01Z
dc.title.none.fl_str_mv Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
title Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
spellingShingle Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
Rubianes-Porta, Laura
Implants dentals
Assaigs clínics
Restauració dental
Dental implants
Clinical trials
Dental Restoration
title_short Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
title_full Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
title_fullStr Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
title_full_unstemmed Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
title_sort Impact of implant-abutment connection design on biological and mechanical outcomes in posterior single-tooth restorations: A randomized clinical trial
dc.creator.none.fl_str_mv Rubianes-Porta, Laura
Traver Méndez, Valeria
Ghiorghiu, Roxanna
Piera-Auguet, Jordi
Subirà Pifarré, Carles
Barbosa de Figueiredo, Rui Pedro
Valmaseda Castellón, Eduardo
Camps Font, Octavi
author Rubianes-Porta, Laura
author_facet Rubianes-Porta, Laura
Traver Méndez, Valeria
Ghiorghiu, Roxanna
Piera-Auguet, Jordi
Subirà Pifarré, Carles
Barbosa de Figueiredo, Rui Pedro
Valmaseda Castellón, Eduardo
Camps Font, Octavi
author_role author
author2 Traver Méndez, Valeria
Ghiorghiu, Roxanna
Piera-Auguet, Jordi
Subirà Pifarré, Carles
Barbosa de Figueiredo, Rui Pedro
Valmaseda Castellón, Eduardo
Camps Font, Octavi
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Implants dentals
Assaigs clínics
Restauració dental
Dental implants
Clinical trials
Dental Restoration
topic Implants dentals
Assaigs clínics
Restauració dental
Dental implants
Clinical trials
Dental Restoration
description Statement of problem: The implant-abutment interface has been identified as a key factor in preserving peri-implant marginal bone levels. However, current evidence remains insufficient to identify the most suitable connection design since most published studies fail to control critical variables such as the implant surface or design. Purpose: The purpose of this randomized clinical trial was to assess vertical marginal bone loss after 1 year of function of implants with identical macroscopic and microscopic designs and 3 different implant-abutment connections (external hexagon, internal hexagon, and conical) placed in the molar or premolar area. The secondary aims were to assess the mechanical and biological complications after 1 year of function. Material and methods: An open-label, randomized controlled trial with 3 treatment arms was carried out. Participants were assessed at implant placement, prosthesis installation, and after 1 year of loading. The main outcome variable was the distance from the implant shoulder to the marginal bone at the mesial and distal aspect of each implant. Probing depth, plaque index, and bleeding on probing, as well as mechanical or biological complications, were also assessed. A descriptive, bivariate and multivariate analysis (linear models and binary logistic models) of the data was performed. Results: Seventy-five participants with 105 implants were consecutively enrolled and randomized to the external hexagon, internal hexagon, and conical connection groups (35 implants each). The 3 groups had similar baseline features. The distance from the implant shoulder to the marginal bone varied significantly over time (P<.001) but was similar for all groups (P=.152) and followed the same evolution pattern over time (P=.995). Seven failures in 7 participants were registered during the study (3 in external hexagon, 1 in internal hexagon, and 3 in conical connection (P=.356). Conclusions: The implant-abutment connection design did not significantly affect the changes in interproximal bone levels of posterior single-unit implant-supported crowns after 12 months of loading. Furthermore, the risk of developing biological or mechanical complications was similar for all the tested connection designs.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/223063
url https://hdl.handle.net/2445/223063
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.prosdent.2025.06.022
Journal of Prosthetic Dentistry, 2025
https://doi.org/10.1016/j.prosdent.2025.06.022
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Rubianes-Porta, Laura et al., 2025
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Rubianes-Porta, Laura et al., 2025
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Articles publicats en revistes (Odontoestomatologia)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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