A study of the effect of implant supported partial overdenture by measuring loads on the abutment teeth and residual ridge

本研究旨在揭示支持部分覆盖义齿(I-Pod)的种植体的数量和位置对义齿基牙和义齿下剩余牙槽骨所施加的机械载荷的影响。用压电式三维力传感器测量基牙上的载荷。用触觉板式传感器测量义齿下剩余牙槽的载荷，分别在无种植体支撑义齿、Imp1支承义齿、Imp2支承义齿、Imp1和Imp2支承义齿四种测试条件下进行。义齿基托下种植体的应用有助于减轻基牙和残留牙槽骨的负荷。

This study aimed to reveal effects of the number and position of implants which support a partial overdenture (I-POd) on mechanical loads exerted onto the abutment tooth of the denture and on the residual ridge beneath the denture.Two implants were placed at the second premolar (imp1) and the second molar (imp2) position in edentulous area of model. Load onto the abutment tooth was measured by a piezo-electric 3D-force transducer. Load exerted on residual ridge beneath the denture was measured by a tactile sheet-sensor.Measurements were performed in four test conditions as follows: no implants supporting the denture, imp1 supporting the denture, imp2 supporting the denture and imp1 and imp2 supporting the denture.Loads onto the abutment tooth and residual ridge beneath the denture base were significantly associated with the implant number and position of I-POd. Application of implants beneath the denture base contributes to reduce the loads onto the abutment tooth and residual ridge.