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Understanding the S...
Understanding the Stress Distribution on Anatomic Customized Root-Analog Dental Implant at Bone-Implant Interface for Different Bone Densities
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Nimmawitt, P (författare)
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Aliyu, AAA (författare)
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Lohwongwatana, B (författare)
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Arunjaroensuk, S (författare)
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Puncreobutr, C (författare)
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- Mattheos, N (författare)
- Karolinska Institutet
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Pimkhaokham, A (författare)
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(creator_code:org_t)
- 2022-09-14
- 2022
- Engelska.
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Ingår i: Materials (Basel, Switzerland). - : MDPI AG. - 1996-1944. ; 15:18
- Relaterad länk:
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http://kipublication...
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https://doi.org/10.3...
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Abstract
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- The aim of this study is to assess the stress distribution on the bone tissue and bone-implant interface of a customized anatomic root-analog dental implant (RAI) by means of finite element analysis (FEA) for different types of bone density. A mandibular right second premolar was selected from the CBCT database. A DICOM file was converted to an STL file to create a CAD model in FEA software. The bone boundary model was created, while bone density types I–IV were determined. Von Mises stress was measured at bone tissues and bone-implant interfaces. To validate the models, the RAI was 3D printed through a laser powder-bed fusion (L-PBF) approach. The results revealed that all RAI designs could not cause plastic deformation or fracture resulting in lower stress than the ultimate tensile stress of natural bone and implant. Compared to a conventional screw-type implant, RAIs possess a more favorable stress distribution pattern around the bone tissue and the bone-implant interface. The presence of a porous structure was found to reduce the stress at cancellous bone in type IV bone density.
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