Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting
Porous dental implants represent a significant advancement in dentistry, offering improved osseointegration, reduced bone resorption and minimized stiffness to better interact with surrounding bone. This study focuses on the development of Ti6Al4V implants with immediate loading and controlled poros...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000802 |
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| author | Amanda Robau-Porrua Jesús E. González Roberto Arancibia-Castillo Alberto Picardo Eugenia Araneda-Hernández Yadir Torres |
| author_facet | Amanda Robau-Porrua Jesús E. González Roberto Arancibia-Castillo Alberto Picardo Eugenia Araneda-Hernández Yadir Torres |
| author_sort | Amanda Robau-Porrua |
| collection | DOAJ |
| description | Porous dental implants represent a significant advancement in dentistry, offering improved osseointegration, reduced bone resorption and minimized stiffness to better interact with surrounding bone. This study focuses on the development of Ti6Al4V implants with immediate loading and controlled porosity (40 vol% and 600 µm pore size) to improve vascularization and bone ingrowth, which are crucial for successful integration and long-term performance. Dense implants, fully porous implants, and a hybrid design combining a porous surface with a dense core were fabricated using Selective Laser Melting, enhancing fatigue resistance under cyclic loads. Porosity was quantified, revealing 19 % through image analysis and 13 % via the Archimedes method. Finite Element Analysis demonstrated that porous implants improve stress distribution, facilitate load transfer to peri-implant trabecular bone, and achieve uniform stress and strain distributions between thread fillets, with values ranging from 1.1 MPa to 1.6 MPa for stress and 0.0002 to 0.0030 for strain, promoting bone growth. Comparisons with β-Ti alloy implants featuring a porous structure and dense core revealed reduced stress concentrations and a lower risk of fatigue failure. These findings highlight the potential of hybrid and β-Ti designs for personalized dental implants, balancing mechanical performance with biological compatibility to meet patient-specific needs. |
| format | Article |
| id | doaj-art-9d35fc0b088e439783d9bc7f809631a8 |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-9d35fc0b088e439783d9bc7f809631a82025-08-20T02:00:43ZengElsevierMaterials & Design0264-12752025-03-0125111366010.1016/j.matdes.2025.113660Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser MeltingAmanda Robau-Porrua0Jesús E. González1Roberto Arancibia-Castillo2Alberto Picardo3Eugenia Araneda-Hernández4Yadir Torres5Departamento de Metalurgia, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 234, Concepción 4070386 ChileDepartamento de Biomateriales Cerámicos y Metálicos, Centro de Biomateriales, Universidad de La Habana, Ave. Universidad s/n Entre G y Ronda, Vedado, La Habana 6323 CubaDepartamento de Manufactura avanzada/AM-3DP, Leitat Technological Center, Ave. Román Díaz 532, 7500724 Providencia, Región Metropolitana, ChileDepartamento de Ingeniería del Diseño, Escuela Politécnica Superior de Sevilla, Universidad de Sevilla, Calle Virgen de África, 7, 41011 Sevilla, SpainDepartamento de Metalurgia, Facultad de Ingeniería, Universidad de Concepción, Edmundo Larenas 234, Concepción 4070386 ChileIngeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior de Sevilla, Universidad de Sevilla, Calle Virgen de África, 7, 41011 Sevilla, Spain; Corresponding author.Porous dental implants represent a significant advancement in dentistry, offering improved osseointegration, reduced bone resorption and minimized stiffness to better interact with surrounding bone. This study focuses on the development of Ti6Al4V implants with immediate loading and controlled porosity (40 vol% and 600 µm pore size) to improve vascularization and bone ingrowth, which are crucial for successful integration and long-term performance. Dense implants, fully porous implants, and a hybrid design combining a porous surface with a dense core were fabricated using Selective Laser Melting, enhancing fatigue resistance under cyclic loads. Porosity was quantified, revealing 19 % through image analysis and 13 % via the Archimedes method. Finite Element Analysis demonstrated that porous implants improve stress distribution, facilitate load transfer to peri-implant trabecular bone, and achieve uniform stress and strain distributions between thread fillets, with values ranging from 1.1 MPa to 1.6 MPa for stress and 0.0002 to 0.0030 for strain, promoting bone growth. Comparisons with β-Ti alloy implants featuring a porous structure and dense core revealed reduced stress concentrations and a lower risk of fatigue failure. These findings highlight the potential of hybrid and β-Ti designs for personalized dental implants, balancing mechanical performance with biological compatibility to meet patient-specific needs.http://www.sciencedirect.com/science/article/pii/S0264127525000802Selective Laser MeltingGradient porosityDental implantsFinite elementsBiomechanical behaviorTitanium alloys |
| spellingShingle | Amanda Robau-Porrua Jesús E. González Roberto Arancibia-Castillo Alberto Picardo Eugenia Araneda-Hernández Yadir Torres Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting Materials & Design Selective Laser Melting Gradient porosity Dental implants Finite elements Biomechanical behavior Titanium alloys |
| title | Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting |
| title_full | Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting |
| title_fullStr | Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting |
| title_full_unstemmed | Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting |
| title_short | Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting |
| title_sort | design fabrication and characterization of novel dental implants with porosity gradient obtained by selective laser melting |
| topic | Selective Laser Melting Gradient porosity Dental implants Finite elements Biomechanical behavior Titanium alloys |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000802 |
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