有限元分析不同材料对超短种植体的影响

doi:10.13591/j.cnki.kqyx.2023.04.004

Abstract

Abstract:

Objective Finite element analysis was used to study the effect of different implant materials on the stress of ultra-short implants and surrounding bone, in order to lay a theoretical foundation for the application of ultra-short implants in the restoration of mandibular first molars. Methods The mandible model was established by SoildWorks software and the one-step ultra-short implant model was made of three different materials, namely ZrO, Ti-Zr and CFR-PEEK. ABAQUS finite element software was used to simulate the bite force and apply axial load to each model to calculate and analyze the stress distribution of implants and surrounding bone. Results Von-Mises stress values of implants and cortical bone in the CFR-PEEK group were lower than the Ti-Zr and ZrO groups. Conclusion Compared with Ti-Zr and ZrO, CFR-PEEK has more advantages in repairing mandibular first molar area with bone deficiency from the perspective of biomechanics.

Key words: ultra-short implant, three-dimensional finite element, carbon fiber reinforced polyether ether ketone, zirconia, titanium-zirconium alloy

CLC Number:

R783.1

LYU Hongyu,SUN Yi,LI Tianyou,XIE Weili. Effects of different materials on ultra-short implants by finite element analysis[J]. Stomatology, 2023, 43(4): 308-311.

Figures/Tables 5

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References 25

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材料	弹性模量/MPa	泊松比
皮质骨^[14]	13 700	0.30
松质骨^[14]	1 370	0.30
种植冠^[15]	69 000	0.30
ZrO^[14]	210 000	0.30
Ti-Zr^[16]	110 000	0.35
CFR-PEEK^[17]	18 000	0.39

模型	单元数	节点数
牙冠	52 658	11 082
种植体	63 647	12 473
皮质骨	10 581	2 352
松质骨	57 275	11 086

应力	模型	ZrO	Ti-Zr	CFR-PEEK
轴向最大主应力	种植体	28.21	24.56	24.73
	皮质骨	14.27	13.40	8.06
	松质骨	0.862 3	0.864 7	0.857 6
轴向最小主应力	种植体	1.27	1.14	1.21
	皮质骨	5.79	1.51	1.57
	松质骨	0.364 7	0.364 8	0.364 9
轴向Von-Mises应力	种植体	28.21	24.56	21.27
	皮质骨	8.30	7.81	7.61
	松质骨	0.653 9	0.628 9	0.628 8
斜向Von-Mises应力	种植体	106.50	107.81	105.23
	皮质骨	27.17	27.56	26.78
	松质骨	1.895 2	1.835 0	1.866 9

Effects of different materials on ultra-short implants by finite element analysis

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