2种支架设计对基牙及相关组织受力的三维有限元分析

上海口腔医学 ›› 2016, Vol. 25 ›› Issue (4): 431-437.

2种支架设计对基牙及相关组织受力的三维有限元分析

柏黎明¹, 李国强², 张强¹, 董晛³

1.上海市口腔病防治院口腔修复工艺科,2.中日友好诊室,上海 200031; 3.上海健康医学院医学技术学院,上海 201318

收稿日期:2015-08-10 出版日期:2016-08-25 发布日期:2016-09-06
通讯作者: 李国强,Tel：021-64723179,E-mail:lgq1258@126.com
作者简介:柏黎明（1982-）,男,技师,Tel：021-63601102,

Stress distribution in abutment teeth and related tissues under different design of connector: three-dimensional finite element analysis

BAI Li-ming¹, LI Guo-qiang², ZHANG Qiang¹, DONG Xian³

1.Department of Prosthodontic Technology, 2.Sino-Japanese Friendship Room, Shanghai Stomatological Hospital. Shanghai 200031;
3. School of Medical Technology, Shanghai University of Medicine & Health Sciences. Shanghai 201318,China

Received:2015-08-10 Online:2016-08-25 Published:2016-09-06

摘要/Abstract

摘要： 目的比较使用同种材料制作的改良设计义齿和常规设计义齿对远中游离端缺损的基牙及相关组织受力的影响。方法选择上颌单侧第一、第二磨牙缺失的55岁男性患者1例,通过螺旋CT扫描、Mimics、Geomagic Studio及ANSYS 软件建模并进行有限元分析,观察基牙及相关组织的受力情况。结果改良设计义齿基牙受力范围明显减小,牙周膜受力减小、鞍基区黏膜受力增加且更均匀,牙槽骨刺激性吸收趋势减小。结论对于远中游离端缺损的牙列缺损患者,改良设计的可摘局部义齿具有一定的应力中断作用,能更好地保护基牙、分散力,对缺牙区黏膜和牙槽骨具有良好的保护作用。

关键词: 三维有限元, 分裂基托式设计, 可摘局部义齿

Abstract: PURPOSE: To compare the stress distribution in abutment teeth and related tissues under the same material and different loading between improved major connector design and traditional major connector design. METHODS: One 55-year-old male patient with unilateral maxillary first molar and second molar missing was chosen. The stress distribution in abutment teeth and related tissues were evaluated with spiral CT scanning, Mimics, Geomagic Studio software, a study model was built and finite element analysis was performed using ANSYS software. RESULTS: With the improved major connector design, the stress of abutment decreased significantly, the stress of periodontal decreased, the stress of edentulous mucosa increased significantly and became more balanced, the trend of stimulated absorption of alveolar bone decreased. CONCLUSIONS: For patients with distal free defect of dentition, the design of improved major connector has the effect of stress interruption, can protect the abutment better, detract the stress of the denture and has an good protective effect on the edentulous mucosa and alveolar bone.

Key words: Three-dimensional finite element analysis, Design of split major connector, Removable partial denture

中图分类号:

R783.2

柏黎明, 李国强, 张强, 董晛. 2种支架设计对基牙及相关组织受力的三维有限元分析[J]. 上海口腔医学, 2016, 25(4): 431-437.

BAI Li-ming, LI Guo-qiang, ZHANG Qiang, DONG Xian. Stress distribution in abutment teeth and related tissues under different design of connector: three-dimensional finite element analysis[J]. Shanghai Journal of Stomatology, 2016, 25(4): 431-437.

参考文献

[1] 李祎, 刘峰, 孙凤, 等. 分裂基托义齿设计对远中游离端基牙骨吸收的影响 [J]. 口腔颌面修复学杂志, 2011, 12 (1): 18-21.
[2] 贾爽, 叶荣荣. Vitallium 铸造合金的理论研究与临床应用 [J]. 中国组织工程研究, 2013, 17(3): 531-535.
[3] 钟群, 沈晴昳, 邬雪颖, 等. 三维有限元法分析功能性印模全口义齿下颌牙槽黏膜的应力分布 [J]. 上海口腔医学, 2012, 21(1): 31-35.
[4] 龚璐璐, 丁祖泉. 口腔修复生物力学中三维有限元法应用的研究进展及展望 [J]. 医用生物力学, 2002, 17(2): 119-123.
[5] Nishigawa G, Matsunaga T, Maruo Y, et al. Finite element analysis of the effect of the bucco-lingual position of artificial posterior teeth under occlusal force on the denture supporting bone of the edentulous patient [J]. J Oral Rehabil, 2003, 30(6): 646-652.
[6] 王宗篪, 庄国铭, 谢培庆, 等. 仿生种植牙模型的三维有限元研究 [J]. 福建医科大学学报, 2007, 41(1): 58-61.
[7] Eskitascioglu G, Usmez A, Sevimay M, et al. The influence of occlusal loading location on stresses transferred to implant supported prosheses and supporting bone: a three-dimensional finite element study [J]. J Prosthet Dent, 2004, 91(2): 144-150.
[8] Stegaroiu R, Kusakari H, Nishiyama S, et al. Influence of prosthesis material on stress distribution in bone and implant: a 3-dimensional finite element analysis [J]. Int J Oral Maxillofac Implants, 1998, 13(6): 781-790.
[9] Assunção WG, Tabata LF, Barão VA, et al. Comparison of stress distribution Between complete denture and implant retained overdenture 2D FEA[J]. J Oral Rehabil, 2008, 35(10): 766-774.
[10] 王淑英, 张振庭, 白保晶. 钴铬合金与金合金铸造三臂卡环的三维有限元对比分析 [J].现代口腔医学杂志, 2006, 20(1): 69-71.
[11] 孟小睿. Vitallium合金铸造支架的临床疗效观察 [J]. 山西医药杂志, 2009, 38(24): 1133.
[12] 冯海兰, 徐军. 口腔修复学 [M]. 北京: 北京大学医学版社, 2005: 435-436.
[13] 李国强, 朱静, 戴文安. Vitallium 2000 plus 铸造支架分裂基托设计对基牙和缺牙区黏膜受力影响的三维有限元分析 [J]. 中国美容医学, 2012, 21(6): 988- 990.
[14] Knapp JG, Shotwell JL, Kotowicz WE. Technique for recording dental cast-surveyor relations [J]. J Prosthet Dent, 1979, 41(3): 352-354.
[15] Knapp JG, Small IA. Fixed mandibular complete denture prostheses supported by mandibular staple bone plate implant [J]. J Prosthet Dent,1990, 63(1):73-76.
[16] 蔡玉惠, 王顺玉, 佘颖禾. 5种卡环设计的下颌游离端义齿支持组织的有限元分析[J]. 口腔医学, 1997, 17(4): 174-176.
[17] 郭君, 赵彬. 不同基托设计基牙与缺牙区黏膜受力情况三维有限元分析 [J].中国保健营养, 2013, 23(4): 1627-1628.