Wear of Morse taper and external hexagon implant joints after abutment removal

The aim of this in vitro study was to evaluate the removal torque values on abutments and the morphological wear aspects of two different dental implant joints after immersion in a medium containing biofilm from human saliva. Twenty implant-abutment assemblies were divided into four groups in this...

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Principais autores: Nascimento, Rubens Maribondo do, Prado, Abraão M., Pereira, Jorge, Silva, Filipe S., Henriques, Bruno, Benfatti, Cesar A. M., López-López, José, Souza, Júlio César Matias de
Formato: article
Idioma:English
Publicado em: Springer Science and Business Media LLC.
Assuntos:
Morse taper
Rxternal hexagon implant joints
Biofilm
Human saliva
Endereço do item:https://repositorio.ufrn.br/handle/123456789/45526
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spelling ri-123456789-455262021-12-21T14:43:07Z Wear of Morse taper and external hexagon implant joints after abutment removal Nascimento, Rubens Maribondo do Prado, Abraão M. Pereira, Jorge Silva, Filipe S. Henriques, Bruno Benfatti, Cesar A. M. López-López, José Souza, Júlio César Matias de Morse taper Rxternal hexagon implant joints Biofilm Human saliva The aim of this in vitro study was to evaluate the removal torque values on abutments and the morphological wear aspects of two different dental implant joints after immersion in a medium containing biofilm from human saliva. Twenty implant-abutment assemblies were divided into four groups in this study: (A) Morse taper free of medium containing biofilm, and (B) after contact with a medium containing biofilm from human saliva; (C) External Hexagon free of medium containing biofilm, and (D) after contact with medium containing biofilm from human saliva. The abutments were firstly torqued to the implants according to the manufacturer ́s recommendations, using a handheld torque meter. Groups B and D were immersed into 24 well-plates containing 2 ml BHI medium with microorganisms for 72 h at 37 °C under microaerophilic conditions. After detorque evaluation, the abutments were removed and the implants were analyzed by scanning electron microscopy (SEM) and profilometry. On the detorque evaluation, the torque values decreased for the external hexagon implants and increased for the Morse taper implants. However, the values were lower when both implantabutment assemblies were in contact with a medium containing biofilm from human saliva. The wear areas of contacting surfaces of the implants were identified by SEM. The highest average roughness values were recorded on the surfaces free of biofilm. The medium containing biofilm from human saliva affected the maintenance of the torque values on Morse taper and external hexagon abutments. Additionally, the removal of abutment altered the inner implant surfaces resulting in an increase of wear of the titanium-based connection 2021-12-21T14:43:06Z 2021-12-21T14:43:06Z 2017-03-20 article PRADO, Abraão M.; PEREIRA, Jorge; SILVA, Filipe S.; HENRIQUES, Bruno; NASCIMENTO, Rubens M.; BENFATTI, Cesar A. M.; LÓPEZ-LÓPEZ, José; SOUZA, Júlio C. M. Wear of Morse taper and external hexagon implant joints after abutment removal. Journal of Materials Science: Materials in Medicine, [S.L.], v. 28, n. 5, p. 1-13, 20 mar. 2017. Disponível em: https://link.springer.com/article/10.1007%2Fs10856-017-5879-6. Acesso em: 05 abr. 2021. http://dx.doi.org/10.1007/s10856-017-5879-6. 0957-4530 1573-4838 https://repositorio.ufrn.br/handle/123456789/45526 10.1007/s10856-017-5879-6. en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Springer Science and Business Media LLC.
institution Repositório Institucional
collection RI - UFRN
language English
topic Morse taper
Rxternal hexagon implant joints
Biofilm
Human saliva
spellingShingle Morse taper
Rxternal hexagon implant joints
Biofilm
Human saliva
Nascimento, Rubens Maribondo do
Prado, Abraão M.
Pereira, Jorge
Silva, Filipe S.
Henriques, Bruno
Benfatti, Cesar A. M.
López-López, José
Souza, Júlio César Matias de
Wear of Morse taper and external hexagon implant joints after abutment removal
description The aim of this in vitro study was to evaluate the removal torque values on abutments and the morphological wear aspects of two different dental implant joints after immersion in a medium containing biofilm from human saliva. Twenty implant-abutment assemblies were divided into four groups in this study: (A) Morse taper free of medium containing biofilm, and (B) after contact with a medium containing biofilm from human saliva; (C) External Hexagon free of medium containing biofilm, and (D) after contact with medium containing biofilm from human saliva. The abutments were firstly torqued to the implants according to the manufacturer ́s recommendations, using a handheld torque meter. Groups B and D were immersed into 24 well-plates containing 2 ml BHI medium with microorganisms for 72 h at 37 °C under microaerophilic conditions. After detorque evaluation, the abutments were removed and the implants were analyzed by scanning electron microscopy (SEM) and profilometry. On the detorque evaluation, the torque values decreased for the external hexagon implants and increased for the Morse taper implants. However, the values were lower when both implantabutment assemblies were in contact with a medium containing biofilm from human saliva. The wear areas of contacting surfaces of the implants were identified by SEM. The highest average roughness values were recorded on the surfaces free of biofilm. The medium containing biofilm from human saliva affected the maintenance of the torque values on Morse taper and external hexagon abutments. Additionally, the removal of abutment altered the inner implant surfaces resulting in an increase of wear of the titanium-based connection
format article
author Nascimento, Rubens Maribondo do
Prado, Abraão M.
Pereira, Jorge
Silva, Filipe S.
Henriques, Bruno
Benfatti, Cesar A. M.
López-López, José
Souza, Júlio César Matias de
author_facet Nascimento, Rubens Maribondo do
Prado, Abraão M.
Pereira, Jorge
Silva, Filipe S.
Henriques, Bruno
Benfatti, Cesar A. M.
López-López, José
Souza, Júlio César Matias de
author_sort Nascimento, Rubens Maribondo do
title Wear of Morse taper and external hexagon implant joints after abutment removal
title_short Wear of Morse taper and external hexagon implant joints after abutment removal
title_full Wear of Morse taper and external hexagon implant joints after abutment removal
title_fullStr Wear of Morse taper and external hexagon implant joints after abutment removal
title_full_unstemmed Wear of Morse taper and external hexagon implant joints after abutment removal
title_sort wear of morse taper and external hexagon implant joints after abutment removal
publisher Springer Science and Business Media LLC.
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/45526
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