INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY
Aim of study was to evaluate the stress, displacements and deformation in the peri-implant alveolar bone and prosthetic components in mandibular implant-supported hybrid prostheses. Materials and Method.. This finite element analysis (FEA) study modeled a 3D maxillary edentulous section based on CT...
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Romanian Society of Oral Rehabilitation
2025-06-01
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| Series: | Romanian Journal of Oral Rehabilitation |
| Online Access: | https://rjor.ro/influence-of-alveolar-bone-resorption-on-stress-deformation-and-displacements-in-mandibular-implant-supported-removable-hybrid-prostheses-a-finite-element-study/ |
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| author | Cristian Drochioi Petrica-Florin Sava Stefan Gherasimescu Norina Consuela Forna Igor Blanaru Victor Vlad Costan |
| author_facet | Cristian Drochioi Petrica-Florin Sava Stefan Gherasimescu Norina Consuela Forna Igor Blanaru Victor Vlad Costan |
| author_sort | Cristian Drochioi |
| collection | DOAJ |
| description | Aim of study was to evaluate the stress, displacements and deformation in the peri-implant alveolar bone and prosthetic components in mandibular implant-supported hybrid prostheses. Materials and Method.. This finite element analysis (FEA) study modeled a 3D maxillary edentulous section based on CT data from a 65-year-old patient. Four models of implant-supported removable hybrid prostheses were created, combining two implants with retention bars and various degree of alveolar bone resorption on both quadrants (1-1 mm; 2-2 mm; 3-3 mm; 4-4 mm). Bilateral mastication was simulated by applyincg static vertical forces (100 N) on the first molar region. Linear static analysis was conducted using Ansys Workbench 2017 to assess von Mises stress distribution in the bone–implant interface and prosthetic components under different loading and configuration scenarios. Results. The highest von Mises stress occurred in cortical bone (20.5 MPa) and the implant–Ti bar interface (55.15 MPa) in the 4-4 mm model, while the lowest were in cancellous bone (0.58 MPa) and displacement (0.00119 mm) in the 1-1 mm model. Conclusions. As bone resorption increased, higher stress concentrations and mechanical demands were observed in the cortical and cancellous bone, at the implant–Ti bar interface, and within the acrylic saddle structure. These results emphasize the importance of preserving alveolar bone volume to maintain favorable stress distribution and prosthetic performance. In patients with advanced resorption, special attention should be given to implant positioning, prosthetic design, and material selection in order to mitigate the risk of biomechanical complications.
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| format | Article |
| id | doaj-art-6165616626ac4bf99e56a8b4488a8bac |
| institution | Kabale University |
| issn | 2066-7000 2601-4661 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Romanian Society of Oral Rehabilitation |
| record_format | Article |
| series | Romanian Journal of Oral Rehabilitation |
| spelling | doaj-art-6165616626ac4bf99e56a8b4488a8bac2025-08-20T03:36:57ZengRomanian Society of Oral RehabilitationRomanian Journal of Oral Rehabilitation2066-70002601-46612025-06-0117251052210.62610/RJOR.2025.2.17.46INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDYCristian Drochioi0Petrica-Florin Sava1Stefan Gherasimescu2Norina Consuela Forna3Igor Blanaru4Victor Vlad Costan5U.M.F. "Grigore T.Popa" Iasi, Romania, Faculty of Dental Medicine, Surgical DepartmentU.M.F. "Grigore T.Popa" Iasi, Romania, Faculty of Dental Medicine, Surgical DepartmentU.M.F. "Grigore T.Popa" Iasi, Romania, Faculty of Dental Medicine, Surgical Department“Gr. T. “Grigore T. Popa” University of Medicine and Pharmacy, Faculty of Dental MedicineGhiorghe Asachi Technical University, Iasi, Romania, Faculty of Mechanical EngineeringU.M.F. "Grigore T.Popa" Iasi, Romania, Faculty of Dental Medicine, Surgical DepartmentAim of study was to evaluate the stress, displacements and deformation in the peri-implant alveolar bone and prosthetic components in mandibular implant-supported hybrid prostheses. Materials and Method.. This finite element analysis (FEA) study modeled a 3D maxillary edentulous section based on CT data from a 65-year-old patient. Four models of implant-supported removable hybrid prostheses were created, combining two implants with retention bars and various degree of alveolar bone resorption on both quadrants (1-1 mm; 2-2 mm; 3-3 mm; 4-4 mm). Bilateral mastication was simulated by applyincg static vertical forces (100 N) on the first molar region. Linear static analysis was conducted using Ansys Workbench 2017 to assess von Mises stress distribution in the bone–implant interface and prosthetic components under different loading and configuration scenarios. Results. The highest von Mises stress occurred in cortical bone (20.5 MPa) and the implant–Ti bar interface (55.15 MPa) in the 4-4 mm model, while the lowest were in cancellous bone (0.58 MPa) and displacement (0.00119 mm) in the 1-1 mm model. Conclusions. As bone resorption increased, higher stress concentrations and mechanical demands were observed in the cortical and cancellous bone, at the implant–Ti bar interface, and within the acrylic saddle structure. These results emphasize the importance of preserving alveolar bone volume to maintain favorable stress distribution and prosthetic performance. In patients with advanced resorption, special attention should be given to implant positioning, prosthetic design, and material selection in order to mitigate the risk of biomechanical complications. https://rjor.ro/influence-of-alveolar-bone-resorption-on-stress-deformation-and-displacements-in-mandibular-implant-supported-removable-hybrid-prostheses-a-finite-element-study/ |
| spellingShingle | Cristian Drochioi Petrica-Florin Sava Stefan Gherasimescu Norina Consuela Forna Igor Blanaru Victor Vlad Costan INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY Romanian Journal of Oral Rehabilitation |
| title | INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY |
| title_full | INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY |
| title_fullStr | INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY |
| title_full_unstemmed | INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY |
| title_short | INFLUENCE OF ALVEOLAR BONE RESORPTION ON STRESS, DEFORMATION AND DISPLACEMENTS IN MANDIBULAR IMPLANT-SUPPORTED REMOVABLE HYBRID PROSTHESES: A FINITE ELEMENT STUDY |
| title_sort | influence of alveolar bone resorption on stress deformation and displacements in mandibular implant supported removable hybrid prostheses a finite element study |
| url | https://rjor.ro/influence-of-alveolar-bone-resorption-on-stress-deformation-and-displacements-in-mandibular-implant-supported-removable-hybrid-prostheses-a-finite-element-study/ |
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