Analysis of stress distribution in implant-supported prostheses with custom abutments at different angles of 20 degrees: A finite element analysis

Merve Karagöz(1), Meryem Erdoğdu(2), Reza Mohammadi(3), Ali Rıza Tunçdemir(4)
(1) Necmettin Erbakan University, Faculty of Dentistry, Department of Prosthetic Dentistry, Konya, Türkiye,
(2) Necmettin Erbakan University, Faculty of Dentistry, Department of Prosthodontics, Konya, Türkiye,
(3) Necmettin Erbakan University, Faculty of Dentistry, Konya, Türkiye,
(4) Necmettin Erbakan University, Faculty of Dentistry, Department of Prosthetic Dentistry, Konya, Türkiye

Abstract

Aim: Implants may not always be placed parallel to each other. In such cases, implants can be made more parallel by adjusting the angles with custom abutments. Different cementation materials can be used for cement-retained abutments. The bonding and stress resistance values of materials used in the cementation of implant-supported prostheses vary. The aim of this study is to demonstrate the stress distribution values of restorations bonded with different cementation materials in finite element analysis.


Methodology: In this study, a maxillary edentulous jawbone was designed using the SolidWorks program. Two implants were placed in the regions of teeth #14 and #16. Implant data was obtained from the Bilimplant company. A 20-degree angled custom abutment and implant-supported prosthesis were designed using the Exocad program. Standard Tesellation Language (STL) files were transferred to SolidWorks to obtain Standard for the Exchange of Product Model Data (STP) files. The created prosthesis design was then transferred to the ABAQUS program for finite element analysis. Subsequently, using 5 different cementation materials (glass ionomer cement, dual-cure resin cement - ivoclar, dual-cure resin cement - relyx, polycarboxylate cement, self-cure resin cement), stress distribution values of implant-supported prosthesis components were recorded as von Mises stress values (VMS)


Results: İndicate higher stress values with glass ionomer cement and lower with polycarboxylate cement. Stress distribution increases posteriorly but doesn't significantly differ based on cement type. Lowest stress on implant screws is with glass ionomer, but highest varies. Cortical bone stress is lowest with glass ionomer cement.


Conclusion: There was no significant difference in stress values among different cement types. Stress increases in implants, abutments, and cements due to forces applied posteriorly, while anteriorly, retention screw stress increases. The choice of cementation material does not significantly impact stress in implant components or surrounding tissues.

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Authors

Merve Karagöz
mrvkrgoz@gmail.com (Primary Contact)
Meryem Erdoğdu
Reza Mohammadi
Ali Rıza Tunçdemir
Karagöz, M., Erdoğdu, M., Mohammadi, R., & Tunçdemir, A. R. . (2024). Analysis of stress distribution in implant-supported prostheses with custom abutments at different angles of 20 degrees: A finite element analysis. International Dental Research. https://doi.org/10.5577/intdentres.568

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How to Cite

Karagöz, M., Erdoğdu, M., Mohammadi, R., & Tunçdemir, A. R. . (2024). Analysis of stress distribution in implant-supported prostheses with custom abutments at different angles of 20 degrees: A finite element analysis. International Dental Research. https://doi.org/10.5577/intdentres.568
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