CAJ | 학술논문

目的：研究反复取戴对磁性附着体固位力和磁通量的影响及其相关性。方法以5对磁性附着体为研究对象，模拟临床义齿取戴的拉脱—复位运动，在取戴前，取戴2500、5000次和10000次后对磁性附着体的固位力进行测量；在磁体和衔铁精确对位组成标准的闭合磁路的前提下，分别选取3个位点（磁体上表面P1、衔铁下表面P2和侧方P3）进行磁通量的测定。结果5对磁性附着体在取戴前的固位力为（3.361±0.137）N；反复取戴2500、5000次和10000次后固位力分别下降到（3.109±0.160）、（2.666±0.195）和（2.224±0.231）N。反复取戴前后3个位点的磁通量均有所增加，但其差异无统计学意义，同时固位力和磁通量之间呈线性变化趋势。结论反复取戴磁性附着体会导致其固位力下降，而对磁通量没有显著的影响。
목적：연구반복취대대자성부착체고위력화자통량적영향급기상관성。방법이5대자성부착체위연구대상，모의림상의치취대적랍탈—복위운동，재취대전，취대2500、5000차화10000차후대자성부착체적고위력진행측량；재자체화함철정학대위조성표준적폐합자로적전제하，분별선취3개위점（자체상표면P1、함철하표면P2화측방P3）진행자통량적측정。결과5대자성부착체재취대전적고위력위（3.361±0.137）N；반복취대2500、5000차화10000차후고위력분별하강도（3.109±0.160）、（2.666±0.195）화（2.224±0.231）N。반복취대전후3개위점적자통량균유소증가，단기차이무통계학의의，동시고위력화자통량지간정선성변화추세。결론반복취대자성부착체회도치기고위력하강，이대자통량몰유현저적영향。
Objective??This?study?aims?to?evaluate?the?retentive?force?and?magnetic?flux?of?magnetic?attachments?after?repeated?insertion–removal?cycles.?The?correlation?of?retentive?force?and?magnetic?flux?was?also?observed.?Methods???A?Magfit?EX600W(n=5)?was?selected?as?retentive?device?for?this?study.?The?retentive?force?of?the?magnetic?attachments?after?2?500,?5?000,?and?10?000?times?of?insertion–removal?cycles?was?obtained?through?a?universal?testing?machine.?Magnetic?fluxes?at?three?positions?(P1,?upper?surface?of?the?magnet;?P2,?lower?surface?of?the?keeper;?and?P3,?lateral?side?of?the?magnetic?attachment?set)?were?measured?using?a?Gauss?meter.?Results???The?initial?retentive?force?of?the?Magfit?EX600W?attachment?was(3.361±0.137)?N.?The?retentive?force?significantly?decreased?to?(3.109±0.160)?N,?(2.666±0.195)?N,?and?(2.224±0.231)?N?after?2?500,?5?000,?and?10?000?refitting?cycles,?respectively.?However,?no?significant?difference?was?observed?among?the?increased?magnetic?flux?at?the?three?positions?after?refitting?cycles.?Moreover,?the?retentive?force?and?maximum?magnetic?flux?leakage?showed?strong?negative?correlation.?Conclusion???The?retentive?force?decreased?because?of?the?refitting?cycles.?However,?insertion–removal?cycles?had?no?significant?effect?on?magnetic?flux.