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体外研究黏膜厚度对采用非夹板式附着体的下颌种植覆盖义齿应力分布及义齿稳定性的影响。

Effects of mucosal thickness on the stress distribution and denture stability of mandibular implant-supported overdentures with unsplinted attachments in vitro.

作者信息

Haruta Asuka, Matsushita Yasuyuki, Tsukiyama Yoshihiro, Sawae Yoshinori, Sakai Nobuo, Koyano Kiyoshi

机构信息

Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.

出版信息

J Dent Biomech. 2011;2011:894395. doi: 10.4061/2011/894395. Epub 2011 May 26.

DOI:10.4061/2011/894395
PMID:21799705
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3138049/
Abstract

The aim of this study was to compare the effects of mucosal thickness on the stress pattern around implants and movement of implant-supported overdentures with ball/female and three different types of magnetic attachments. After insertion of two root-form implants into a mandibular model, the surface of the model was covered with a 1.5- or 3-mm layer of impression material to simulate the oral mucosa, and removable overdentures were fabricated on each model. A 50-N vertical force was applied to the right first molar, and the resultant stress distribution and denture movement were measured. In the 1.5-mm mucosal model, the magnetic attachments showed significantly lower bending moments than did the ball attachment. The denture base displacement was the lowest on a magnetic attachment. In this study, use of magnetic attachments could be advantageous for mandibular implant-supported overdentures based on lower stress and better denture stability especially in the thin mucosal model.

摘要

本研究的目的是比较黏膜厚度对种植体周围应力模式以及采用球/凹型和三种不同类型磁性附着体的种植体支持覆盖义齿移动的影响。在下颌模型中植入两颗根形种植体后，在模型表面覆盖1.5毫米或3毫米厚的印模材料以模拟口腔黏膜，并在每个模型上制作可摘覆盖义齿。在右侧第一磨牙上施加50牛的垂直力，并测量由此产生的应力分布和义齿移动情况。在1.5毫米黏膜模型中，磁性附着体的弯矩显著低于球型附着体。磁性附着体上的义齿基托位移最小。在本研究中，尤其是在薄黏膜模型中，基于较低的应力和更好的义齿稳定性，使用磁性附着体对下颌种植体支持覆盖义齿可能是有利的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/c875656ffe64/JDB2011-894395.010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/af85fc28fe56/JDB2011-894395.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/39c04620e4c8/JDB2011-894395.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/c6872ba060ca/JDB2011-894395.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/28ec8e65b4ba/JDB2011-894395.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/21de067aafa4/JDB2011-894395.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/eda576d56bba/JDB2011-894395.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/dd4099ee2cf3/JDB2011-894395.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/62b661e05230/JDB2011-894395.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/be3b70afea07/JDB2011-894395.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/c875656ffe64/JDB2011-894395.010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/af85fc28fe56/JDB2011-894395.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/39c04620e4c8/JDB2011-894395.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/c6872ba060ca/JDB2011-894395.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/28ec8e65b4ba/JDB2011-894395.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/21de067aafa4/JDB2011-894395.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/eda576d56bba/JDB2011-894395.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/dd4099ee2cf3/JDB2011-894395.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/62b661e05230/JDB2011-894395.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/be3b70afea07/JDB2011-894395.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0308/3138049/c875656ffe64/JDB2011-894395.010.jpg

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三种不同类型的双种植体支持磁性附着体对无牙下颌骨应力分布的比较
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The McGill consensus statement on overdentures. Mandibular two-implant overdentures as first choice standard of care for edentulous patients.关于覆盖义齿的麦吉尔共识声明。下颌双种植体覆盖义齿作为无牙患者护理的首选标准。
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