Influence of different crown lengths on shorter implants with different lengths, diameters and designs at atrophic posterior mandible: A finite element analysis
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Short implants, implant restorations, implantology, axial load, oblique load, finite element analysis
Abstract
Aim: The aim of the study was to compare the stresses caused of different crown heights on short implants with different lengths, diameters, and designs under axial and oblique loads on the cortical bone and implant system using finite element analysis.
Methodology: In the atrophic posterior mandible, four different implants of different sizes and designs were placed in the first molar region. Metal supported porcelain crowns with three different heights (10 mm, 12.5 mm, and 15 mm) were designed on the computer. A total of 12 study models were created. Axial and oblique loads were applied, and Von Mises values in the implant and abutment; maximum and minimum principal stress values in the cortical bone were evaluated by the finite element analysis method.
Results: Compared to axial load, significantly higher stress values were found at the implant and cortical bone in obliquely loaded models. As the length and diameter of the implant increased, the stress on the cortical bone decreased. Compared to the threaded implant, the plateau design implant caused less stress on the bone under vertical loads, while causing more stress on the oblique. Unlike the literature, it was observed that the stresses on the implant were higher in the larger diameter implant compared to the narrower.
Conclusion: As a result of the stress values obtained within the limits of the analysis, when the lengths of the crowns restored on short implants were compared, it was determined that the axial forces were at an acceptable level under all conditions.
How to cite this article:
Mahmutoğlu Eİ, Agüloğlu S. Influence of different crown lengths on shorter implants with different lengths, diameters and designs at atrophic posterior mandible: A finite element analysis. Int Dent Res 2023;13(3)125-132. https://doi.org/10.5577/intdentres.430
Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.
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