Biomechanical evaluation of two implant-supported single crowns and union crown in the premolar area: a finite element analysis

Jinyang Zhang; Xiao Zhang; Jianyu Chen; Xianshuai Chen

doi:10.1117/12.2687767

28 August 2023 Biomechanical evaluation of two implant-supported single crowns and union crown in the premolar area: a finite element analysis

Jinyang Zhang, Xiao Zhang, Jianyu Chen, Xianshuai Chen

Author Affiliations +

Proceedings Volume 12724, Second International Conference on Biomedical and Intelligent Systems (IC-BIS 2023); 127240T (2023) https://doi.org/10.1117/12.2687767
Event: Second International Conference on Biomedical and Intelligent Systems (IC-BIS2023), 2023, Xiamen, China

Abstract

The purpose of the present study is to evaluate the biomechanical differences between two implant-supported cement retained single crown, screw-retained single crown and screw-retained union crown in premolar area. Thus, three prosthetic restoration groups were established based on different abutment types and crown retention designs: 2 straight abutments and 2 single cement-retained crowns (T1), 2 screw-retained abutments and 2 single screw-retained crowns (T2), 2 screw-retained abutments and screw-retained union crown (T3). The finite element analysis (FEA) was performed to explore the stress distribution of prosthetic restoration. Further linear regression analysis was performed to study the effect of crown height (CH) on the maximum stress of the implant system. The FEA results demonstrated that T3 restorations model exhibited the lowest level of stress. The overall peak stress of the implant-abutment assembly in T3 model were reduced by 69.6%-92.9% compared with T1 and T2 models. Furthermore, increasing CH values will lead to a strong linear increase in the maximum equivalent stress of the implant-abutment assembly. In terms of biomechanical property, the screw-retained union crown design for the double implant-supported prostheses achieved the best load resistance and optimal stress distribution compared to the other two single crown designs. Besides, screw retained union crown with smaller CH value was preferred for implant-supported restorations.

Citation Download Citation

Jinyang Zhang, Xiao Zhang, Jianyu Chen, and Xianshuai Chen "Biomechanical evaluation of two implant-supported single crowns and union crown in the premolar area: a finite element analysis", Proc. SPIE 12724, Second International Conference on Biomedical and Intelligent Systems (IC-BIS 2023), 127240T (28 August 2023); https://doi.org/10.1117/12.2687767

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KEYWORDS

Cements

Biomechanics

Bone

Finite element methods

Teeth

3D modeling

Biotechnology

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