Yoda Nobuhiro, Matsudate Yoshiki, Abue Masaru, Hong Guang, Sasaki Keiichi
Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
J Dent Biomech. 2015 Mar 16;6:1758736015576009. doi: 10.1177/1758736015576009. eCollection 2015.
This study aimed to investigate the effect of attachment type on the load transmitted to implants and the residual ridge in a mandibular two-implant-supported overdenture in a model study. Ball attachments, locator attachments, and round-bar attachments were selected and examined. Static and dynamic vertical loads of 100 N were applied in the right first molar region. The load on the implants was measured by piezoelectric three-dimensional force transducers, and the load on the residual ridge beneath the denture base was measured using a tactile sheet sensor. The load on the implants with ball attachments was significantly higher than that with the other two attachments. The load on the residual ridge with round-bar attachments was significantly higher than that with the other two attachments. Our findings indicate that the three-dimensional load on implants and the residual ridge beneath the denture base is significantly associated with the type of attachment used in implant-supported overdentures.
本研究旨在通过模型研究，探讨附着类型对下颌双种植体支持覆盖义齿中种植体及剩余牙槽嵴所传递负荷的影响。选取并检查了球形附着体、Locator附着体和圆杆附着体。在右侧第一磨牙区域施加100 N的静态和动态垂直负荷。使用压电式三维力传感器测量种植体上的负荷，并使用触觉片式传感器测量义齿基托下方剩余牙槽嵴上的负荷。球形附着体种植体上的负荷显著高于其他两种附着体。圆杆附着体剩余牙槽嵴上的负荷显著高于其他两种附着体。我们的研究结果表明，种植体及义齿基托下方剩余牙槽嵴上的三维负荷与种植体支持覆盖义齿中使用的附着体类型显著相关。
