CAJ | 학술논문

目的：???分析螺距变化对微种植体—骨界面、微种植体的应力分布和位移的影响，为支抗微种植体的临床选择和优化设计提供理论参照。方法???运用Pro/E软件建立不同螺距的微种植体和下颌骨三维有限元模型，用Hyper-mesh软件对该模型进行网格划分，并在微种植体顶部施加与颌骨面平行的正畸力1.96?N，用ANSYS软件进行三维模拟计算。结果???微种植体—骨界面应力峰值集中在微种植体颈部和尖部，当螺距为0.5?mm时，微种植体颈部的Von-mises应力和位移峰值最小，分别为27?MPa和0.001?5?mm，且应力和位移曲线最为平缓。结论???螺距变化影响微种植体和微种植体—骨界面的应力分布。在本实验条件下，螺距为0.5?mm时，微种植体—骨界面、微种植体本身应力和位移最小。
목적：???분석라거변화대미충식체—골계면、미충식체적응력분포화위이적영향，위지항미충식체적림상선택화우화설계제공이론삼조。방법???운용Pro/E연건건립불동라거적미충식체화하합골삼유유한원모형，용Hyper-mesh연건대해모형진행망격화분，병재미충식체정부시가여합골면평행적정기력1.96?N，용ANSYS연건진행삼유모의계산。결과???미충식체—골계면응력봉치집중재미충식체경부화첨부，당라거위0.5?mm시，미충식체경부적Von-mises응력화위이봉치최소，분별위27?MPa화0.001?5?mm，차응력화위이곡선최위평완。결론???라거변화영향미충식체화미충식체—골계면적응력분포。재본실험조건하，라거위0.5?mm시，미충식체—골계면、미충식체본신응력화위이최소。
Objective??To?analyze?the?stress?distribution?at?micro-implant-bone?interface?and?the?displacement?of?micro-implant?based?on?different?pitch?and?to?apply?the?theoretical?reference?for?choosing?orthodontic?anchorage?micro-implant?and?optimize?design?of?micro-implant. Methods???The?three-dimensional?finite?element?models?of?micro-implant?with?different?pitches?and?mandible?were?established?by?Pro/E;?the?elements?were?divided?by?Hypermesh.?The?force?of?1.96?N?was?applied?on?the?top?of?the?implant?parallel?to?the?mandible?surface?to?analyze?the?differences?of?the?micro-implant?displacement?and?that?of?the?force?on?the?micro-implant-bone?interface.?Results??The?maximum?Von-mises?stress?focused?on?the?neck?and?tip?of?micro-implant.?The?peak?Von-mises?stress?and?displacement?on?the?neck?of?micro-implant?are?both?the?smallest,?which?are?27?MPa?and?0.001?5?mm?respectively,?and?the?stress?and?displacement?curves?are?the?flattest?at?the?pitch?of?0.5?mm?than?that?of?other?sizes. Conclusion??The?pitch?of?micro-implant?influences?the?stress?distribution?on?micro-implant?and?bone?surface.?The?stress?and?displacement?on?both?micro-implant-bone?interface?and?micro-implant?are?both?the?smallest?in?the?0.5?mm?case?of?other?micro-implant?parameters?in?this?work.