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本实验旨在研究种植支持式单端固定桥(CFPD)斜向集中受载时的三维位移。采用比格犬下颌骨作为实验对象,即刻种植ITI种植体两枚,建立以两种植体为基牙的种植支持式CFPD,采用数字激光散斑技术测量其在斜向加载时不同加载量下的三维位移。结果表明:斜向加载桥体时,随着载荷量的增加,基牙和桥体的位移量随之增大。在相同载荷下,桥体位移量最大,近缺隙侧基牙位移量次之,远缺隙侧基牙位移量最小;斜向加载基牙时,相应受载基牙位移量最大,桥体和邻近基牙位移量次之。在相同加载条件下,加载基牙时CFPD的位移量较加载桥体时的位移量小。因此,可认为种植支持式CFPD是一种可行的修复方式,但是在使用过程中要避免斜向受力,尤其是桥体的斜向受力。
The purpose of this experiment is to study the three-dimensional displacements of CFDD under oblique loading. The Beagle mandible was used as the experimental object, and two ITI implants were implanted immediately to establish implantable CFPD with two implants as abutments. The digital laser speckle technique Three-dimensional displacement. The results show that when the bridge is loaded diagonally, the displacement of the abutment and bridge increases with the increase of the load. Under the same load, the displacement of abutment is the largest, the displacement of proximal abutment on the near flaw side is the second, and the displacement of abutment on the far side is the smallest. When the abutment is loaded diagonally, the displacement of the abutment is the largest, And adjacent abutment displacement amount of times. Under the same loading conditions, the CFPD displacement when loading the abutment is smaller than that when loading the bridge. Therefore, implantable CFPD can be considered as a viable repair method, but in the process to avoid the diagonal force, especially the oblique force of the bridge.