种植修复牙合面开孔冠粘接剂用量的研究

目的 用计算流体力学(computational fluid dynamics,CFD)方法 研究种植修复中牙冠牙合面开1 mm指示孔的情况下,粘接剂用量对牙冠内部的粘接剂充盈情况及颈部溢出量的影响.方法 利用SolidWorks及ANSYS软件建立冠、基台模型,并利用多相流模型对牙冠就位过程中粘接剂的流动进行瞬态模拟...

Analysis of cement amount applied to an occlusal vented implant crown

Objective To investigate the different amount of cement applied to the vent in the occlusal surface of implant supported crowns.Methods Firstly,the crown and abutment models were established using SolidWorks and ANSYS software.Then the two-phase flow model was used to simulate the real cement flow process during crown seating.Different radii within 0.5-2.4 mm at the initial state were simulated.Eventually,contours of cement distribution were output.The filling ratio of axial surface and shoulder,neck overflow were calculated.Results The filling ratio of axial surface and shoulder surface first increased with the increase of the amount of adhesive,and then tended to be stable.When the adhesive radius was in the range of 1.0-1.7 mm,the filling condition of the adhesive was ideal,and the amount of neck overflow was relatively small.Conclusions In order to obtain ideal filling and less neck overflow of the adhesive,it is recommended to control the adhesive radius between 1.0 mm and 1.7 mm when using the small opening scheme in the molar area.