制备多牙根种植窝超声骨刀的研究

发布时间：2018-03-28 04:30

本文选题：牙种植　切入点：超声骨刀　出处：《浙江工业大学》2015年硕士论文

【摘要】：和单根种植体相比,多根牙种植体有很好的抗剪切和抗扭转的能力。超声骨刀能够制备非回转体异型的种植窝,为实现多牙根种植体的修复奠定基础。本研究旨在设计一种能够制备多牙根种植窝的超声骨刀,主要的工作内容和成果如下:(1)结合多牙根种植体的结构特点,设计了多牙根超声骨刀刀头。利用传统解析法和有限元法,分析弯曲刀头谐振时具有的位移响应特点和规律,其中谐振状态下作为输出端的刀头末端具有最大的位移,其主要振动方向依然是纵振方向即Z方向;(2)结合有限元分析结果制作多牙根刀头,搭建了显微观测实验平台,获得振动系统中刀头实际的位移响应,验证有限元分析结果的可靠性;(3)进行了超声骨刀备孔实验,根据备孔时间和骨骼温升情况,验证了所设计超声骨刀的可行性。同时比较了两种冷却方式下的冷却效果和对切削效率的影响。(4)利用有限元方法,研究了超声骨刀备孔时骨界面的温度分布情况。
[Abstract]:Compared with a single implant, multiple dental implants have excellent anti-shear and anti-torsion properties. The purpose of this study was to design a kind of ultrasonic bone knife for the preparation of multi-root implants. The main work and results are as follows: 1) combining with the structural characteristics of multi-root implants. The multi-root ultrasonic bone knife head is designed. The displacement response characteristics and laws of the curved cutter head resonance are analyzed by traditional analytical method and finite element method, in which the end of the tool head as the output end has the largest displacement in the resonant state. The main vibration direction is still longitudinal vibration direction (Z direction) combined with the results of finite element analysis, the multi-root cutter head is made, and a microscopic observation experimental platform is built to obtain the actual displacement response of the cutter head in the vibration system. To verify the reliability of finite element analysis results, the experiment of ultrasonic bone knife with hole preparation was carried out. According to the time of preparation and the temperature rise of bone, The feasibility of the designed ultrasonic bone knife is verified, and the cooling effect and the effect on the cutting efficiency of the ultrasonic bone knife under two cooling methods are compared. The temperature distribution of the interface of the ultrasonic bone knife is studied by using the finite element method.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH787.1

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