Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach
Fatigue is the most common mechanical failure type in dental implants. ISO 14801 standardizes fatigue testing of dental implants, providing the load-life curve which is most useful for comparing the fatigue behavior of different dental implant designs. Based on it, many works were published in the d...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/6/744 |
| _version_ | 1797566255428796416 |
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| author | Mikel Armentia Mikel Abasolo Ibai Coria Joseba Albizuri |
| author_facet | Mikel Armentia Mikel Abasolo Ibai Coria Joseba Albizuri |
| author_sort | Mikel Armentia |
| collection | DOAJ |
| description | Fatigue is the most common mechanical failure type in dental implants. ISO 14801 standardizes fatigue testing of dental implants, providing the load-life curve which is most useful for comparing the fatigue behavior of different dental implant designs. Based on it, many works were published in the dental implant literature, comparing different materials, component geometries, connection types, surface treatments, etc. These works are useful for clinicians in order to identify the best options available in the market. The present work is intended not for clinicians but for dental implant manufacturers, developing a design tool that combines Finite Element Analysis, fatigue formulation and ISO 14801 experimental tests. For that purpose, 46 experimental tests were performed on BTI INTERNA<sup>®</sup> IIPSCA4513 implants joined with INPPTU44 abutments by means of INTTUH prosthetic screws under three different tightening torque magnitudes. Then, the load case was reproduced in a FE model from where the nominal stress state in the fatigue critical section was worked out. Finally, Walker criterion was used to represent accurately the effects of mean stress and predict fatigue life of the studied dental implant assembly, which can be extended to most of the products of BTI manufacturer. By means of this tool, dental implant manufacturers will be able to identify the critical design and assembly parameters in terms of fatigue behavior, evaluate their influence in preliminary design stages and consequently design dental implants with significantly better fatigue response which in turn will reduce future clinical incidences. |
| first_indexed | 2024-03-10T19:25:07Z |
| format | Article |
| id | doaj.art-c56f9237aa224a5985449a133068b03e |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T19:25:07Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-c56f9237aa224a5985449a133068b03e2023-11-20T02:41:55ZengMDPI AGMetals2075-47012020-06-0110674410.3390/met10060744Fatigue Design of Dental Implant Assemblies: A Nominal Stress ApproachMikel Armentia0Mikel Abasolo1Ibai Coria2Joseba Albizuri3Mechanical Engineering Department, University of the Basque Country, 48013 Bilbao, SpainMechanical Engineering Department, University of the Basque Country, 48013 Bilbao, SpainMechanical Engineering Department, University of the Basque Country, 48013 Bilbao, SpainMechanical Engineering Department, University of the Basque Country, 48013 Bilbao, SpainFatigue is the most common mechanical failure type in dental implants. ISO 14801 standardizes fatigue testing of dental implants, providing the load-life curve which is most useful for comparing the fatigue behavior of different dental implant designs. Based on it, many works were published in the dental implant literature, comparing different materials, component geometries, connection types, surface treatments, etc. These works are useful for clinicians in order to identify the best options available in the market. The present work is intended not for clinicians but for dental implant manufacturers, developing a design tool that combines Finite Element Analysis, fatigue formulation and ISO 14801 experimental tests. For that purpose, 46 experimental tests were performed on BTI INTERNA<sup>®</sup> IIPSCA4513 implants joined with INPPTU44 abutments by means of INTTUH prosthetic screws under three different tightening torque magnitudes. Then, the load case was reproduced in a FE model from where the nominal stress state in the fatigue critical section was worked out. Finally, Walker criterion was used to represent accurately the effects of mean stress and predict fatigue life of the studied dental implant assembly, which can be extended to most of the products of BTI manufacturer. By means of this tool, dental implant manufacturers will be able to identify the critical design and assembly parameters in terms of fatigue behavior, evaluate their influence in preliminary design stages and consequently design dental implants with significantly better fatigue response which in turn will reduce future clinical incidences.https://www.mdpi.com/2075-4701/10/6/744dental Implantsexperimental testsfinite elementhigh cycle fatiguemean stress effectwalker criterion |
| spellingShingle | Mikel Armentia Mikel Abasolo Ibai Coria Joseba Albizuri Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach Metals dental Implants experimental tests finite element high cycle fatigue mean stress effect walker criterion |
| title | Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach |
| title_full | Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach |
| title_fullStr | Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach |
| title_full_unstemmed | Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach |
| title_short | Fatigue Design of Dental Implant Assemblies: A Nominal Stress Approach |
| title_sort | fatigue design of dental implant assemblies a nominal stress approach |
| topic | dental Implants experimental tests finite element high cycle fatigue mean stress effect walker criterion |
| url | https://www.mdpi.com/2075-4701/10/6/744 |
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