中国组织工程研究
中國組織工程研究
중국조직공정연구
Journal of Clinical Rehabilitative Tissue Engineering Research
2015年
3期
460-464
,共5页
姜瑞%聂二民%张春元%曾尽娣%谈济州
薑瑞%聶二民%張春元%曾儘娣%談濟州
강서%섭이민%장춘원%증진제%담제주
生物材料%口腔生物材料%钕铁硼%磁性附着体%永磁体%模型%磁感应强度
生物材料%口腔生物材料%釹鐵硼%磁性附著體%永磁體%模型%磁感應彊度
생물재료%구강생물재료%녀철붕%자성부착체%영자체%모형%자감응강도
Subject headings:Denture Precision Attachment%Models,Structural%Dentures
背景：研究表明钕铁硼是体积小、质量轻、高性能的新型永磁体材料，最新研制出来的钕铁硼永磁体(钕铁硼N52)磁能积可达53MGOe，目前尚未应用于口腔领域。
<br> 目的：建立钕铁硼永磁体的磁性附着体模型并进行模型结构的评价。
<br> 方法：根据设计模型结构图，磁体结构采用闭路磁场中的“杯型”结构，按照尺寸对购买的钕铁硼磁性材料、铁镍软磁合金和HPM75不锈钢进行切割，分别制备出永磁体、衔铁、磁轭、垫片、隔磁环，然后进行组装、焊接、镀铬与充磁。制作10个试件，测试并记录每个试件的磁力和磁感应强度。
<br> 结果与结论：成功建立了10个闭路式磁性附着体模型，其模拟磁力和实际磁力分别为87.6 mT和(48.930±2.827) mT，侧面模拟磁感应强度和实际磁感应强度分别为0.331 mT和2.7 mT，顶面模拟磁感应强度和实际磁感应强度分别为6.52 mT和18.7 mT。3D软件模拟钕铁硼N52磁性附着体中磁体和衔铁之间距离与磁力的关系显示，磁体和衔铁从紧密接触到二者之间分开距离0.1 mm的过程中，随着磁体与衔铁之间距离的增加，磁力迅速下降；当磁体和衔铁分开距离0.1 mm时，磁力由最大下降为最初固位力的24%左右，随着二者分开距离继续增加，磁力下降趋势减缓，当分开距离达到0.5 mm时，磁力几乎为零。结果表明新型材料磁性附着体设计模型能够满足临床需求，磁场泄露符合安全标准。
揹景：研究錶明釹鐵硼是體積小、質量輕、高性能的新型永磁體材料，最新研製齣來的釹鐵硼永磁體(釹鐵硼N52)磁能積可達53MGOe，目前尚未應用于口腔領域。
<br> 目的：建立釹鐵硼永磁體的磁性附著體模型併進行模型結構的評價。
<br> 方法：根據設計模型結構圖，磁體結構採用閉路磁場中的“杯型”結構，按照呎吋對購買的釹鐵硼磁性材料、鐵鎳軟磁閤金和HPM75不鏽鋼進行切割，分彆製備齣永磁體、銜鐵、磁軛、墊片、隔磁環，然後進行組裝、銲接、鍍鉻與充磁。製作10箇試件，測試併記錄每箇試件的磁力和磁感應彊度。
<br> 結果與結論：成功建立瞭10箇閉路式磁性附著體模型，其模擬磁力和實際磁力分彆為87.6 mT和(48.930±2.827) mT，側麵模擬磁感應彊度和實際磁感應彊度分彆為0.331 mT和2.7 mT，頂麵模擬磁感應彊度和實際磁感應彊度分彆為6.52 mT和18.7 mT。3D軟件模擬釹鐵硼N52磁性附著體中磁體和銜鐵之間距離與磁力的關繫顯示，磁體和銜鐵從緊密接觸到二者之間分開距離0.1 mm的過程中，隨著磁體與銜鐵之間距離的增加，磁力迅速下降；噹磁體和銜鐵分開距離0.1 mm時，磁力由最大下降為最初固位力的24%左右，隨著二者分開距離繼續增加，磁力下降趨勢減緩，噹分開距離達到0.5 mm時，磁力幾乎為零。結果錶明新型材料磁性附著體設計模型能夠滿足臨床需求，磁場洩露符閤安全標準。
배경：연구표명녀철붕시체적소、질량경、고성능적신형영자체재료，최신연제출래적녀철붕영자체(녀철붕N52)자능적가체53MGOe，목전상미응용우구강영역。
<br> 목적：건립녀철붕영자체적자성부착체모형병진행모형결구적평개。
<br> 방법：근거설계모형결구도，자체결구채용폐로자장중적“배형”결구，안조척촌대구매적녀철붕자성재료、철얼연자합금화HPM75불수강진행절할，분별제비출영자체、함철、자액、점편、격자배，연후진행조장、한접、도락여충자。제작10개시건，측시병기록매개시건적자력화자감응강도。
<br> 결과여결론：성공건립료10개폐로식자성부착체모형，기모의자력화실제자력분별위87.6 mT화(48.930±2.827) mT，측면모의자감응강도화실제자감응강도분별위0.331 mT화2.7 mT，정면모의자감응강도화실제자감응강도분별위6.52 mT화18.7 mT。3D연건모의녀철붕N52자성부착체중자체화함철지간거리여자력적관계현시，자체화함철종긴밀접촉도이자지간분개거리0.1 mm적과정중，수착자체여함철지간거리적증가，자력신속하강；당자체화함철분개거리0.1 mm시，자력유최대하강위최초고위력적24%좌우，수착이자분개거리계속증가，자력하강추세감완，당분개거리체도0.5 mm시，자력궤호위령。결과표명신형재료자성부착체설계모형능구만족림상수구，자장설로부합안전표준。
BACKGROUND:Studies have demonstrated that neodymium iron boron (NdFeB) is a new kind of permanent magnet material with size reduction, light quality and high performance. The magnetic energy product of NdFeB N52 newly developed is 53MGOe, and the N52 is not used in dental field.
<br> OBJECTIVE:To establish and evaluate the model of NdFeB magnetic attachment.
<br> METHODS: The NdFeB magnetic material, Fe-Ni soft magnetic aloy and HPM75 stainless steel were bought and cut by the size of model structure with the “cup” type of closed magnetic field, to prepare the permanent magnet, keeper, yoke, shield disk and ring. Al the parts were assembled, welded, chromed and magnetized. The magnetic force and magnetic induction intensity of 10 specimens were tested and recorded.
<br> RESULTS AND CONCLUSION:Ten models of magnetic attachment with closed magnetic field were established. The simulated magnetic force and actual magnetic force were 87.6 mT and (48.930±2.827) mT. The simulated magnetic induction intensity and actual magnetic induction intensity were 0.331 mT and 2.7 mT in the side, 6.52 mT and 18.7 mT in the top. The geometric diagram between the magnetic force and distance was simulated by the 3D simulation software. The results showed the magnetic force decreased rapidly with the distance increase between the magnet and keeper when the distance became from close contact to a gap of 0.1 mm. The magnetic force with a gap of 0.1 mm between the magnet and the keeper was decreased to about 24% of the magnetic force at zero gap. The magnetic force decreased slowly with the distance increase from 0.1 mm gap, and then the magnetic force was almost zero with the 0.5 mm gap. The clinical demand and the safety standard of magnetic leakage can be meted with the model of magnetic attachment by using the new magnetic material.
