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| 1 | 上颌后牙区不同形状短种植体修复的三维有限元分析显示文摘目的 评价上颌后牙区4种不同形状短种植体修复时种植体周围骨组织的应力特征,为短种植体的临床选择提供参考.方法 根据CT扫描数据及种植体产品数据建立包括牙槽骨、4种形状短种植体(A:鳍形螺纹鱼雷形;B:三角形螺纹根形;C:密螺纹柱形;D:疏螺纹柱形)及上颌右侧第一磨牙全瓷冠修复的三维有限元模型,采用三维六面体及楔形单元划分网格.假设种植体与骨为50%的骨结合,与种植体长轴成45°斜向颊侧的200或1000N载荷四等分作用于冠的4个牙尖上.假设种植体周围的骨质为Ⅳ类骨(即很薄的一层骨皮质包绕较疏松的骨松质),比较4种种植体周围骨皮质及骨松质的von Mises应力分布.在牙槽嵴顶的骨皮质中及距离螺纹顶端约0.2 mm的骨松质中分别设定测量线,以便于对比应力结果.结果 4种种植体模型骨皮质的应力分布规律相似,骨松质的应力分布差别较大.从测量线观察,A、C和D种植体周围骨松质最大应力位于种植体颈部,200 N作用下应力分别为6.60、6.50和7.79 MPa,B种植体末端骨松质的应力(5.84 MPa)超过颈部(5.72 MPa).A和C种植体周围骨松质应力分布相对均匀,200N作用下,A、C种植体末端应力分别为5.02、4.96 MPa;B、D种植体末端应力分别为5.84、7.52 MPa;1 000N作用下,A、C种植体末端应力分别为25.96、24.06 MPa;B、D种植体末端应力分别为29.52、38.53 MPa.结论 从生物力学角度出发,在牙槽骨高度有限的Ⅳ类骨中推荐使用鳍形螺纹鱼雷形种植体和密螺纹柱形种植体. | 李晓娜 Rudi Van Staden Hong Guan | 2014 | 中华口腔医学杂志2014，49，11： | 5 |
| 2 | Dissecting the roles of osmolyte accumulation during stress显示文摘 | P. D.Hare W. A.Cress J.Van Staden | 2002 | Plant, Cell & Environment2002，，6： | 3 |
| 3 | Zulu medicinal plants with antibacterial activity显示文摘 | Jonathan E. Kelmanson Anna K. J?ger Johannes van Staden | 2000 | Journal of Ethnopharmacology2000，，3： | 2 |
| 4 | A novel dual - phase culture medium promotes germination and seedling establishment from immature embryos in South African Disa ( Orchidaceae ) species 显示文摘 | Thompson D I Edwards T J van Staden J | 2007 | Plant Growth Regul2007，53，3： | 1 |
| 5 | Sereening of Zulu medieinal plants for angiotensin converting enzyme ( ACE ) inhibitors 显示文摘 | DUNEAN A C JAGER A K STADEN J V | 1999 | Journal Ethno Pharmaeology1999，68，： | 1 |
| 6 | Where firms choose to dis- close voluntary environmental information 显示文摘 | De V C Van Staden C J | 2011 | Journal of Ac- counting and Public Policy2011，，30： | 1 |
| 7 | Determination of Lead(Ⅱ),Copper(Ⅱ),Zinc(Ⅱ),Cobalt(Ⅱ),Cadmium(Ⅱ),Iron(Ⅲ),Mercury(Ⅱ) using sequential injection extractions显示文摘 | Staden J F van Taljaard R E | 2004 | Talanta2004，64，5： | 1 |
| 8 | Towards the scientific validation of traditional medicinal plants显示文摘 | Taylor JLS Rabe T McGaw LJ Jager AK van Staden J | 2001 | Plant Growth Regul2001，34，1： | 1 |
| 9 | Screening of traditionally used South African plants for antifungal activity against Candida albicans显示文摘 | Morsel ML Lindsey KL van Staden J | 2003 | Ethnopharmacol2003，86，23： | 1 |
| 10 | Agrobacterium rhizogenes-mediated transforma- tion to improve rooting ability of eucalypts显示文摘 | Macrae S Staden J V | 1993 | Tree Physiology1993，12，4： | 1 |
| 11 | Observations on the different methods of processing on the bacterial contaminants of bovine and ovine tripe显示文摘 | van der MADE H N van STADEN J J | 1978 | Onderstepoort Journal of Veterinary Research1978，45，： | 1 |
| 12 | Determination of chromium(Ⅲ) and chromium(Ⅵ) by use of a spectrophotometric sequential injection system显示文摘 | Mulaudzi L V Staden J F Stefan R I | 2002 | Anal Chim Acta2002，467，12： | 1 |
| 13 | Proline synthesis and degradation: A model system for elucidating stress-related signal transduction 显示文摘 | HARE P D CRESS W A STADEN J V | 1999 | J Experi Bota1999，50，： | 1 |
| 14 | Dissecting the roles of osmolyte accumulation during strcss显示文摘 | Hare P D Cress W A J Van Staden | 1998 | Plant Cell & Environment1998，21，6： | 1 |
| 15 | The atopy patch test in the diagnostic workup of suspect-edfood-related symptoms in children显示文摘 | Mehl A Rolinck-Werninghaus C Staden U | 2006 | J Allergy Clin Immunol2006，118，4： | 1 |
| 16 | Proline synthesis and degradation: a model system for elucidating stress-related signal transduction显示文摘 | CRESS W A van Staden J | 1999 | J Exp Bot1999，50，： | 1 |
| 17 | Speciation of Mn(Ⅱ) and Mn(Ⅶ) by on-line spectrophotometric sequential injection analysis显示文摘 | Staden J F Mulaudzi L V Stefan R I | 2003 | Anal Chim Acta2003，499，12： | 1 |
| 18 | Introduction to the PBMR heat transfer test facility显示文摘 | Rousseau P G van Staden M | 2008 | Nuclear Engineering and Design2008，238，11： | 1 |
| 19 | Shareholders' requirements for corporate environmental disclosures:A cross country comparison显示文摘 | Charl de Villiers Chris J.van Staden | | 0，，42： | 1 |
| 20 | Dissecting the roles of osmolyte accumulation during stress 显示文摘 | Hare P D Cress W A van Staden J | 1998 | Plant Cell Environ1998，21，： | 1 |
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