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一项有限元分析，用于比较具有两种不同内部连接方式的超短种植体上的应力分布。

A Finite Element Analysis to Compare Stress Distribution on Extra-Short Implants with Two Different Internal Connections.

作者信息

García-Braz Silvia Helena, Prados-Privado María, Zanatta Luiz Carlos Silveira, Calvo-Guirado José Luis, Prados-Frutos Juan Carlos, Gehrke Sérgio Alexandre

机构信息

Department of Implantology, Paulista University, São Paulo 01000, Brazil.

Department of Continuum Mechanics and Structural Analysis, Carlos III University, Leganés, Madrid, Spain.

出版信息

J Clin Med. 2019 Jul 25;8(8):1103. doi: 10.3390/jcm8081103.

DOI:10.3390/jcm8081103
PMID:31349666
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6722822/
Abstract

BACKGROUND

The goal of this study was to analyze the stress distribution on two types of extra-short dental implants with 5 mm of length: An internal hexagon (IH) and morse taper connection (MT).

METHODS

The three-dimensional model was composed of trabecular and cortical bone, a crown, an extra-short dental implant and their components. An axial load of 150 N was applied and another inclined 30° with the same magnitude.

RESULTS

Stress concentrations on the IH implant are observed in the region of the first threads for the screw. However, in the MT implant the highest stress occurs at the edges of the upper implant platform.

CONCLUSIONS

In view of the results obtained in this study the two types of prosthetic fittings present a good stress distribution. The Morse taper connections presented better behavior than the internal in both loading configurations.

摘要

背景

本研究的目的是分析两种长度为5毫米的超短牙种植体上的应力分布：内六角（IH）和莫氏锥度连接（MT）。

方法

三维模型由松质骨和皮质骨、牙冠、超短牙种植体及其组件组成。施加150 N的轴向载荷，并施加另一个大小相同、倾斜30°的载荷。

结果

在IH种植体上，应力集中出现在螺钉的第一螺纹区域。然而，在MT种植体中，最高应力出现在种植体上部平台的边缘。

结论

鉴于本研究获得的结果，两种类型的修复配件具有良好的应力分布。在两种加载配置下，莫氏锥度连接的表现均优于内六角连接。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/7e7087db5c20/jcm-08-01103-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/13cde8acf349/jcm-08-01103-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/ee2838becc7e/jcm-08-01103-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/b8c1b59883bd/jcm-08-01103-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/d8ea81785000/jcm-08-01103-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/0fb31ed22dc5/jcm-08-01103-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/9b6f2957e43f/jcm-08-01103-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/7e7087db5c20/jcm-08-01103-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/c3b00e5ff28e/jcm-08-01103-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/ee16a81c99d6/jcm-08-01103-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/4c6f50b6c5ac/jcm-08-01103-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/4261c4699070/jcm-08-01103-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/13cde8acf349/jcm-08-01103-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/ee2838becc7e/jcm-08-01103-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/b8c1b59883bd/jcm-08-01103-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/d8ea81785000/jcm-08-01103-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/0fb31ed22dc5/jcm-08-01103-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/9b6f2957e43f/jcm-08-01103-g010a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ce6c/6722822/7e7087db5c20/jcm-08-01103-g011.jpg

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