Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture
Abstract This study compares ball, bar-clip and bar-ball attachment systems for implant-retained mandibular overdentures with three implants. The first implant is placed in the middle of the mandible and the other two are imbedded in the first premolar regions. Linear elastic finite element analysis...
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| Format: | Article |
| Language: | English |
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Marcílio Alves
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| Series: | Latin American Journal of Solids and Structures |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252016001603126&lng=en&tlng=en |
| _version_ | 1828863834208600064 |
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| author | M. Shishesaz A. Ahmadzadeh A. Baharan |
| author_facet | M. Shishesaz A. Ahmadzadeh A. Baharan |
| author_sort | M. Shishesaz |
| collection | DOAJ |
| description | Abstract This study compares ball, bar-clip and bar-ball attachment systems for implant-retained mandibular overdentures with three implants. The first implant is placed in the middle of the mandible and the other two are imbedded in the first premolar regions. Linear elastic finite element analysis is used for design analysis. Three dimensional geometry of the mandible is generated from computed tomography. Other parts are modeled using SolidWorks software. The foodstuff is positioned at the right first molar, representing the most frequent masticating situation. To obtain accurate mesh-independent results, finite element models are solved using several mesh grids. They are then validated by means of a detailed convergence analysis. The results demonstrate that the highest von-Mises stress in the bone is always located around the neck of the implant, at its upper threads. Ball and bar-ball attachments transfer the highest and lowest stresses to the bone surrounding the implants, respectively. The lowest stresses in the cortical and cancellous bones are due to bar-ball attachment. Yet, the overdenture gets its maximum movement for this arrangement. Consequently, the use of bar-ball attachment is only recommended for the cases in which stress transferred to peri-implant bone is more important than overdenture stability. Among the three treatment designs, ball attachment seems to exhibit the lowest lateral and overall displacements and hence, better overdenture stability. |
| first_indexed | 2024-12-13T03:52:39Z |
| format | Article |
| id | doaj.art-df623abf7e154367a6137dc57efd2823 |
| institution | Directory Open Access Journal |
| issn | 1679-7825 |
| language | English |
| last_indexed | 2024-12-13T03:52:39Z |
| publisher | Marcílio Alves |
| record_format | Article |
| series | Latin American Journal of Solids and Structures |
| spelling | doaj.art-df623abf7e154367a6137dc57efd28232022-12-22T00:00:41ZengMarcílio AlvesLatin American Journal of Solids and Structures1679-782513163126314410.1590/1679-78253212S1679-78252016001603126Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained OverdentureM. ShishesazA. AhmadzadehA. BaharanAbstract This study compares ball, bar-clip and bar-ball attachment systems for implant-retained mandibular overdentures with three implants. The first implant is placed in the middle of the mandible and the other two are imbedded in the first premolar regions. Linear elastic finite element analysis is used for design analysis. Three dimensional geometry of the mandible is generated from computed tomography. Other parts are modeled using SolidWorks software. The foodstuff is positioned at the right first molar, representing the most frequent masticating situation. To obtain accurate mesh-independent results, finite element models are solved using several mesh grids. They are then validated by means of a detailed convergence analysis. The results demonstrate that the highest von-Mises stress in the bone is always located around the neck of the implant, at its upper threads. Ball and bar-ball attachments transfer the highest and lowest stresses to the bone surrounding the implants, respectively. The lowest stresses in the cortical and cancellous bones are due to bar-ball attachment. Yet, the overdenture gets its maximum movement for this arrangement. Consequently, the use of bar-ball attachment is only recommended for the cases in which stress transferred to peri-implant bone is more important than overdenture stability. Among the three treatment designs, ball attachment seems to exhibit the lowest lateral and overall displacements and hence, better overdenture stability.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252016001603126&lng=en&tlng=enOverdenture stabilitycortical bonecancellous boneimplant |
| spellingShingle | M. Shishesaz A. Ahmadzadeh A. Baharan Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture Latin American Journal of Solids and Structures Overdenture stability cortical bone cancellous bone implant |
| title | Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture |
| title_full | Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture |
| title_fullStr | Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture |
| title_full_unstemmed | Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture |
| title_short | Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture |
| title_sort | finite element study of three different treatment designs of a mandibular three implant retained overdenture |
| topic | Overdenture stability cortical bone cancellous bone implant |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252016001603126&lng=en&tlng=en |
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