In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation
Abstract Background The stability of implant-abutment connection is crucial to minimize mechanical and biological complications. Therefore, an assessment of the microgap behavior and abutment displacement in different implant-abutment designs was performed. Methods Four implant systems were tested,...
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BMC
2024-03-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-024-04156-2 |
| _version_ | 1797233220747526144 |
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| author | Johannes Angermair Gerhard Iglhaut Konrad Meyenberg Wolfram Wiest Alexander Rack Simon Zabler Tobias Fretwurst Katja Nelson Florian Kernen |
| author_facet | Johannes Angermair Gerhard Iglhaut Konrad Meyenberg Wolfram Wiest Alexander Rack Simon Zabler Tobias Fretwurst Katja Nelson Florian Kernen |
| author_sort | Johannes Angermair |
| collection | DOAJ |
| description | Abstract Background The stability of implant-abutment connection is crucial to minimize mechanical and biological complications. Therefore, an assessment of the microgap behavior and abutment displacement in different implant-abutment designs was performed. Methods Four implant systems were tested, three with a conical implant-abutment connection based on friction fit and a cone angle < 12 ° (Medentika, Medentis, NobelActive) and a system with an angulated connection (< 40°) (Semados). In different static loading conditions (30 N − 90º, 100 N − 90º, 200 N − 30º) the microgap and abutment displacement was evaluated using synchrotron-based microtomography and phase-contrast radioscopy with numerical forward simulation of the optical Fresnel propagation yielding an accuracy down to 0.1 μm. Results Microgaps were present in all implant systems prior to loading (0.15–9 μm). Values increased with mounting force and angle up to 40.5 μm at an off axis loading of 100 N in a 90° angle. Conclusions In contrast to the implant-abutment connection with a large cone angle (45°), the conical connections based on a friction fit (small cone angles with < 12°) demonstrated an abutment displacement which resulted in a deformation of the outer implant wall. The design of the implant-abutment connection seems to be crucial for the force distribution on the implant wall which might influence peri-implant bone stability. |
| first_indexed | 2024-04-24T16:12:43Z |
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| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-04-24T16:12:43Z |
| publishDate | 2024-03-01 |
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| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-ed30d0de03b64568b1cd4427da383cd12024-03-31T11:37:22ZengBMCBMC Oral Health1472-68312024-03-0124111010.1186/s12903-024-04156-2In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiationJohannes Angermair0Gerhard Iglhaut1Konrad Meyenberg2Wolfram Wiest3Alexander Rack4Simon Zabler5Tobias Fretwurst6Katja Nelson7Florian Kernen8Private Practice for Oral and Maxillofacial SurgeryDepartment of Oral and Maxillofacial Surgery, Translational Implantology, Medical Center, Faculty of Medicine, University of FreiburgPrivate OfficeChair of X-ray Microscopy LRM, University WürzburgExperiments Division, ESRF – The European SynchrotronDeggendorf Institute of Technology DITDepartment of Oral and Maxillofacial Surgery, Translational Implantology, Medical Center, Faculty of Medicine, University of FreiburgDepartment of Oral and Maxillofacial Surgery, Translational Implantology, Medical Center, Faculty of Medicine, University of FreiburgDepartment of Oral and Maxillofacial Surgery, Translational Implantology, Medical Center, Faculty of Medicine, University of FreiburgAbstract Background The stability of implant-abutment connection is crucial to minimize mechanical and biological complications. Therefore, an assessment of the microgap behavior and abutment displacement in different implant-abutment designs was performed. Methods Four implant systems were tested, three with a conical implant-abutment connection based on friction fit and a cone angle < 12 ° (Medentika, Medentis, NobelActive) and a system with an angulated connection (< 40°) (Semados). In different static loading conditions (30 N − 90º, 100 N − 90º, 200 N − 30º) the microgap and abutment displacement was evaluated using synchrotron-based microtomography and phase-contrast radioscopy with numerical forward simulation of the optical Fresnel propagation yielding an accuracy down to 0.1 μm. Results Microgaps were present in all implant systems prior to loading (0.15–9 μm). Values increased with mounting force and angle up to 40.5 μm at an off axis loading of 100 N in a 90° angle. Conclusions In contrast to the implant-abutment connection with a large cone angle (45°), the conical connections based on a friction fit (small cone angles with < 12°) demonstrated an abutment displacement which resulted in a deformation of the outer implant wall. The design of the implant-abutment connection seems to be crucial for the force distribution on the implant wall which might influence peri-implant bone stability.https://doi.org/10.1186/s12903-024-04156-2Dental implantsImplant designMicrogap formationMechanical testingSynchrotron radiation |
| spellingShingle | Johannes Angermair Gerhard Iglhaut Konrad Meyenberg Wolfram Wiest Alexander Rack Simon Zabler Tobias Fretwurst Katja Nelson Florian Kernen In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation BMC Oral Health Dental implants Implant design Microgap formation Mechanical testing Synchrotron radiation |
| title | In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation |
| title_full | In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation |
| title_fullStr | In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation |
| title_full_unstemmed | In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation |
| title_short | In vitro assessment of internal implant-abutment connections with different cone angles under static loading using synchrotron-based radiation |
| title_sort | in vitro assessment of internal implant abutment connections with different cone angles under static loading using synchrotron based radiation |
| topic | Dental implants Implant design Microgap formation Mechanical testing Synchrotron radiation |
| url | https://doi.org/10.1186/s12903-024-04156-2 |
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