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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| Format: | Article |
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MDPI AG
2021-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/10/2598 |
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| author | Małgorzata Idzior-Haufa Agnieszka A. Pilarska Wiesław Hędzelek Piotr Boniecki Krzysztof Pilarski Barbara Dorocka-Bobkowska |
| author_facet | Małgorzata Idzior-Haufa Agnieszka A. Pilarska Wiesław Hędzelek Piotr Boniecki Krzysztof Pilarski Barbara Dorocka-Bobkowska |
| author_sort | Małgorzata Idzior-Haufa |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T11:21:10Z |
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| id | doaj.art-8b351dd1b38549ba9d995a260a3cc521 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:21:10Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8b351dd1b38549ba9d995a260a3cc5212023-11-21T20:01:00ZengMDPI AGMaterials1996-19442021-05-011410259810.3390/ma14102598A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment TypeMałgorzata Idzior-Haufa0Agnieszka A. Pilarska1Wiesław Hędzelek2Piotr Boniecki3Krzysztof Pilarski4Barbara Dorocka-Bobkowska5Department of Gerodontology and Oral Pathology, Poznan University of Medical Sciences, Bukowska Street 70, 60-812 Poznan, PolandDepartment of Plant-Derived Food Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 31, 60-624 Poznan, PolandDepartment of Prosthodontics, Poznan University of Medical Sciences, Bukowska Street 70, 60-812 Poznań, PolandDepartment of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-627 Poznan, PolandDepartment of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-627 Poznan, PolandDepartment of Gerodontology and Oral Pathology, Poznan University of Medical Sciences, Bukowska Street 70, 60-812 Poznan, PolandThis 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.https://www.mdpi.com/1996-1944/14/10/2598overdenturebarimplantmandiblefinite element analysis |
| spellingShingle | Małgorzata Idzior-Haufa Agnieszka A. Pilarska Wiesław Hędzelek Piotr Boniecki Krzysztof Pilarski Barbara Dorocka-Bobkowska A Comparison of Biomechanical Properties of Implant-Retained Overdenture Based on Precision Attachment Type Materials overdenture bar implant mandible finite element analysis |
| 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 | overdenture bar implant mandible finite element analysis |
| url | https://www.mdpi.com/1996-1944/14/10/2598 |
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