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A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type

This paper aims to compare, in vitro, the biomechanical properties of an overdenture retained by two bar-retained implants and an overdenture retained by two bar-retained implants with ball attachments. An edentulous mandible model was prepared for the study based on the FRASACO mold with two implan...

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Autores principales: Idzior-Haufa, Małgorzata, Pilarska, Agnieszka A., Hędzelek, Wiesław, Boniecki, Piotr, Pilarski, Krzysztof, Dorocka-Bobkowska, Barbara
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8155947/
https://www.ncbi.nlm.nih.gov/pubmed/34067572
http://dx.doi.org/10.3390/ma14102598
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author Idzior-Haufa, Małgorzata
Pilarska, Agnieszka A.
Hędzelek, Wiesław
Boniecki, Piotr
Pilarski, Krzysztof
Dorocka-Bobkowska, Barbara
author_facet Idzior-Haufa, Małgorzata
Pilarska, Agnieszka A.
Hędzelek, Wiesław
Boniecki, Piotr
Pilarski, Krzysztof
Dorocka-Bobkowska, Barbara
author_sort Idzior-Haufa, Małgorzata
collection PubMed
description This paper aims to compare, in vitro, the biomechanical properties of an overdenture retained by two bar-retained implants and an overdenture retained by two bar-retained implants with ball attachments. An edentulous mandible model was prepared for the study based on the FRASACO mold with two implants. In the first system, the “rider” type (PRECI-HORIX, CEKA) retention structure and the complete mandibular denture with the matrix were made. In the second system, the “rider” type retention suprastructure was also used. In the distal part, (CEKA) clips were placed symmetrically, and a complete mandibular denture, together with the matrix on the bar, and the clip patrices were made. A numerical model was developed for each system where all elements were positioned and related to geometric relations, as in reality. The FEA analysis (finite element analysis) was carried out for seven types of loads: with vertical forces of 20, 50, and 100 N and oblique forces of 20 and 50 N acting on individual teeth of the denture, namely central incisor, canine, and first molar. Displacements, stresses, and deformations within the systems were investigated. Maximum denture displacement in the first system was 0.7 mm. Maximum bar stress amounted to 27.528 MPa, and implant stress to 23.16 MPa. Maximum denture displacement in the second system was 0.6 mm. Maximum bar stress amounted to 578.6 MPa, that of clips was 136.99 MPa, and that of implants was 51.418 MPa. Clips cause smaller displacement of the overdenture when it is loaded but generate higher stress within the precision elements and implants compared to a denture retained only by a bar. Regardless of the shape of the precision element, small deformations occur that mainly affect the mucosa and the matrix.
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spelling pubmed-81559472021-05-28 A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type Idzior-Haufa, Małgorzata Pilarska, Agnieszka A. Hędzelek, Wiesław Boniecki, Piotr Pilarski, Krzysztof Dorocka-Bobkowska, Barbara Materials (Basel) Article This paper aims to compare, in vitro, the biomechanical properties of an overdenture retained by two bar-retained implants and an overdenture retained by two bar-retained implants with ball attachments. An edentulous mandible model was prepared for the study based on the FRASACO mold with two implants. In the first system, the “rider” type (PRECI-HORIX, CEKA) retention structure and the complete mandibular denture with the matrix were made. In the second system, the “rider” type retention suprastructure was also used. In the distal part, (CEKA) clips were placed symmetrically, and a complete mandibular denture, together with the matrix on the bar, and the clip patrices were made. A numerical model was developed for each system where all elements were positioned and related to geometric relations, as in reality. The FEA analysis (finite element analysis) was carried out for seven types of loads: with vertical forces of 20, 50, and 100 N and oblique forces of 20 and 50 N acting on individual teeth of the denture, namely central incisor, canine, and first molar. Displacements, stresses, and deformations within the systems were investigated. Maximum denture displacement in the first system was 0.7 mm. Maximum bar stress amounted to 27.528 MPa, and implant stress to 23.16 MPa. Maximum denture displacement in the second system was 0.6 mm. Maximum bar stress amounted to 578.6 MPa, that of clips was 136.99 MPa, and that of implants was 51.418 MPa. Clips cause smaller displacement of the overdenture when it is loaded but generate higher stress within the precision elements and implants compared to a denture retained only by a bar. Regardless of the shape of the precision element, small deformations occur that mainly affect the mucosa and the matrix. MDPI 2021-05-17 /pmc/articles/PMC8155947/ /pubmed/34067572 http://dx.doi.org/10.3390/ma14102598 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Idzior-Haufa, Małgorzata
Pilarska, Agnieszka A.
Hędzelek, Wiesław
Boniecki, Piotr
Pilarski, Krzysztof
Dorocka-Bobkowska, Barbara
A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title_full A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title_fullStr A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title_full_unstemmed A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title_short A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type
title_sort comparison of biomechanical properties of implant-retained overdenture based on precision attachment type
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8155947/
https://www.ncbi.nlm.nih.gov/pubmed/34067572
http://dx.doi.org/10.3390/ma14102598
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