Effect of Attachment Type on Denture Strain in Maxillary Implant Overdentures: Part 1. Overdenture with Palate.
Effect of Attachment Type on Denture Strain in Maxillary Implant Overdentures: Part 1. Overdenture with Palate.
复制标题
附着体类型对上颌种植覆盖义齿中义齿应变的影响：第 1 部分：带腭的覆盖义齿。
DOI：
10.11607/jomi.5618
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Maeda Y.
中科院分区：
文献类型：
--
作者：
Takahashi T;Gonda T;Maeda Y.
目的：研究附着体对两个或四个种植体支撑的上颌种植覆盖义齿应变的影响。材料和方法：制作上颌无牙种植模型，分别在前牙、前磨牙和磨牙区植入种植体，在不同条件下分别放置球型、定位型和磁型三种无夹板附着体。制作上颌实验义齿，在唇侧和腭侧的前中线安装两个应变片。施加98N的垂直咬合载荷，测量义齿的剪切应变。结果：在大多数情况下，磁体附着体的两侧剪切应变最小，球体附着体的剪切应变最大。然而，当有四种种植体支持时，三种附着体类型之间的剪切应变差异不显著，尤其是磨牙种植体。结论：使用磁性附着体时，上颌种植覆盖义齿的剪切应变最小。当使用上颌种植覆盖义齿时，建议在四个种植体上安装磁铁附着体以预防义齿并发症。
Purpose: This study examined the effects of attachments on strain in maxillary implant overdentures supported by two or four implants. Materials and Methods: A maxillary edentulous model with implants inserted into anterior, premolar, and molar areas was fabricated, and three types of unsplinted attachments--ball, locator, and magnet--were set on the implants distributed under various conditions. Maxillary experimental dentures were fabricated, and two strain gauges were attached at the anterior midline on the labial and palatal sides. A vertical occlusal load of 98 N was applied and shear strain of the dentures was measured. Results: On both sides, magnet attachments resulted in the lowest shear strain, while ball attachments resulted in the highest shear strain under most conditions. However, differences in shear strain among the three attachment types were not significant when supported by four implants, especially molar implants. Conclusion: Shear strain of the maxillary implant overdenture was lowest when using magnet attachments. Magnet attachments mounted on four implants are recommended to prevent denture complications when using maxillary implant overdentures.