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目的:评价多种因素对粘固后全冠边缘间隙(marginal discrepancies of crowns after cementation,MDAC)的影响,这些因素包括预备体完成线形态(finish line of preparation,FLP)、预备体轴壁倾斜角(taper angle of axial wall of preparation,TAAWP)、预备体高度(height from occlusal surface to ends of preparation,HP)、粘固前的全冠边缘间