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中华口腔医学研究杂志(电子版) ›› 2013, Vol. 07 ›› Issue (01) : 28 -34. doi: 10.3877/cma.j.issn.1674-1366.2013.01.006

基础研究

不同设计形式铸造桩核修复重度缺损磨牙三维有限元分析
刘则玉1, 李彦2,(), 凌均棨2, 张美超3   
  1. 1. 511400 广州市番禺区中心医院口腔科
    2. 中山大学光华口腔医学院·附属口腔医院,广东省口腔医学重点实验室
    3. 南方医科大学解剖教研室
  • 收稿日期:2012-10-18 出版日期:2013-02-01
  • 通信作者: 李彦

Three-dimensional finite element analysis of badly damaged maxillary first molar restored with cast post and cores in different forms

ze-yu LIU1, Yan LI1,(), Jun-qi LING1, Mei-chao ZHANG1   

  1. 1. Panyu Central Hospital,Department of Stomatology,Guangzhou 511400,China
  • Received:2012-10-18 Published:2013-02-01
  • Corresponding author: Yan LI
引用本文:

刘则玉, 李彦, 凌均棨, 张美超. 不同设计形式铸造桩核修复重度缺损磨牙三维有限元分析[J/OL]. 中华口腔医学研究杂志(电子版), 2013, 07(01): 28-34.

ze-yu LIU, Yan LI, Jun-qi LING, Mei-chao ZHANG. Three-dimensional finite element analysis of badly damaged maxillary first molar restored with cast post and cores in different forms[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2013, 07(01): 28-34.

目的

通过三维有限元方法分析不同根桩数目铸造桩核修复重度缺损上颌第一磨牙后牙体组织应力分布。

方法

以右上颌第一磨牙为标本,通过CT 扫描获得图像信息,采用Mimics 三维建模软件、FreeForm 视觉设计系统建立健康上颌第一磨牙、单根铸造桩核、双根铸造桩核以及三根铸造桩核修复重度缺损上颌第一磨牙的三维有限元模型;利用Ansys 有限元软件分析比较加载后牙体组织的Von Mises 应力、拉应力和压应力峰值分布和变化。

结果

随着根桩数目从单根桩增加到双根桩和三根桩,牙本质的Von Mises 应力峰值和压应力峰值呈减小趋势,而拉应力峰值增大并集中在与核有夹角的腭根桩和远中颊根桩末端对应的根管牙本质。 桩核修复后的磨牙牙体组织应力峰值均比健康第一磨牙小。

结论

铸造桩核修复重度缺损上颌第一磨牙时,根桩数目和桩与核的夹角均影响牙体组织应力分布。

Objective

The study was designed to analyze the stress distribution of badly damaged maxillary first molar restored with cast post and cores in different forms.

Methods

Intact human right maxillary first molars and badly damaged maxillary first molar restored with cast post and cores were used to build three-dimensional finite element models. Three-dimension finite element model were created with soft wares of Mimics,Ansys and Freeform. Three-dimension finite element analysis was performed on the models under static loads,and stress distribution among different models was evaluated.

Results

The maximal Von Mises stress on dentine decreased when the amounts of posts increased. The maximal tensile stress on dentine increased when the amounts of posts increased. The maximal tensile stress was located in lingual and distal lingual root canal dentine around the tip of post.

Conclusions

The amounts of posts and he angle between post and core influenced stress distribution of badly damaged maxillary first molar restored with cast post and core.

图1 健康第一磨牙实体模型和有限元模型图
表1 模型的根桩分布情况(桩和根管长度比)
图2 不同设计形式桩核修复体模型图 A:模型1;B:模型2;C:模型3
表2 牙体组织及修复材料力学参数
图3 模型1 垂直加载应力分布 A:根管内表面拉应力分布云图;B:根管内表面压应力分布云图;C:根管内表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图4 模型2 垂直加载应力分布 A:根管内表面拉应力分布云图;B:根管内表面压应力分布云图;C:根管内表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图5 模型3 垂直加载应力分布 A:根管内表面拉应力分布云图;B:根管内表面压应力分布云图;C:根管内表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图6 健康上颌第一磨牙垂直加载应力分布 A:拉应力分布云图;B:压应力分布云图;C:Von Mises 力分布云图
图7 模型1 斜向加载应力分布 A:牙体表面拉应力分布云图;B:牙体表面压应力分布云图;C:牙体表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图8 模型2 斜向加载应力分布 A:牙体表面拉应力分布云图;B:牙体表面压应力分布云图;C:牙体表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图9 模型3 斜向加载应力分布 A:牙体表面拉应力分布云图;B:牙体表面压应力分布云图;C:牙体表面Von Mises 力分布云图;D:根桩表面Von Mises 力分布云图
图10 健康上颌第一磨牙斜向加载应力分布 A:拉应力分布云图;B:压应力分布云图;C:Von Mises 力分布云图
表3 垂直向加载下牙体组织应力峰值比较(MPa)
表4 斜向加载下牙体组织应力峰值比较(MPa)
表5 不同加载下根管桩表面Von Mises 应力峰值比较(MPa)
1
Bass EV. Cast post and cor e foundation for the badly broken down molar tooth. Aust Dent J,2002,47(1):57-62.
2
王惠芸. 我国人牙的测量与统计. 中华口腔科杂志,1959,3(2):149-155.
3
Ko CC,Chu CS,Chung KH,et al. Effects of posts on dentin stress distribution in pulpless teeth. J Prosthet dent,1992,68(3):421-427.
4
Salameh Z,Ounsi HF,Aboushelib MN,et al. Fracture resistance and failure patterns of endodontically treated mandibular molars with and without glass fiber post in combination with a zirconia-ceramic crown. J Dent,2008,36(7):513-519.
5
Abou-Rass M,Jann JM,Jobe D,et al. Preparation of space for posting: effect on thickness of canal walls and incidence of perforation in molars. J Am Dent Assoc,1982,104(6):834-837.
6
刘克礼,黄继贤,王渝,等. 分体栓道式铸造桩核在磨牙残冠残根中的应用. 口腔颌面修复学学杂志,2000,1(4):223-224.
7
Mezzomo LA,Corso L,Marczak RJ,et al. Three-dimensional FEA of effects of two dowel-and-core approaches and effects of canal flaring on stress distribution in endodontically treated teeth. J Prosthodont,2011,20(2):120-129.
8
Okamoto K,Ino T,Iwase N,et al. Three-dimensional finite element analysis of stress distribution in composite resin cores with fiber posts of varying diameters. Dent Mater J,2008,27(1):49-55.
9
Dejak B,Młotkowski A. Finite element analysis of strength and adhesion of cast posts compared to glass fiber-reinforced composite resin posts in anterior teeth. J Prosthet Dent,2011,105(2):115-126.
10
da Silva NR,Raposo LH,Versluis A,et al. The effect of post,core,crown type,and ferrule presence on the biomechanical behavior of endodontically treated bovine anterior teeth. J Prosthet Dent,2010,104(5):306-317.
11
Santana FR,Castro CG,Simamoto-Júnior PC,et al. Influence of post system and remaining coronal tooth tissue on biomechanical behaviour of root filled molar teeth. Int Endod J,2011,44(5):386-394.
12
Kivanç BH,Alaçam T,Ulusoy OI,et al. Fracture resistance of thin-walled roots restored with different post systems. Int Endod J,2009,42(11):997-1003.
13
易新竹. 颌学. 人民卫生出版社,2003:12-13.
14
Imanishi A,Nakamura T,Ohyama T,et al. 3-D Finite element analysis of all-ceramic posterior crowns. J Oral Rehabil,2003,30(8):818-822.
15
Al-Omiri MK,Rayyan MR,Abu-Hammad O. Stress analysis of endodontically treated teeth restored with post-retained crowns:A finite element analysis study. J Am Dent Assoc,2011,142(3):289-300.
16
Ichim I,Kuzmanovic DV,Love RM. A finite element analysis of ferrule design on restoration resistance and distribution of stress within a root. Int Endod J,2006,39(6):443-452.
17
Eraslan Ö,Eraslan O,Eskita cıogˇlu G,et al. Conservative restoration of severely damaged endodontically treated premolar teeth: a FEM study. Clin Oral Investig,2011,15(3):403-408.
18
Fu G,Deng F,Wang L,et al. The three-dimension finite element analysis of stress in posterior tooth residual root restored with postcore crown. Dent Traumatol,2010,26(1):64-69.
19
张保卫,潘炜娟,叶少波. 不同角度桩核的应力分析. 上海口腔医学,2000,9(1):8-10
20
Brosh T,Pilo R,Sudai D. The influence of abutment angulation on strains and stresses along the implant/bone interface:comparison between two experimental techniques. J Prosthet Dent,1998,79(3):328-334.
21
Scotti N,Coero Borga FA,Alovisi M,et al. Is fracture resistance of endodontically treated mandibular molars restored with indirect onlay composite restorations influenced by fibre post insertion? J Dent,2012,40(10):814-820.
22
Okamoto K,Ino T,Iwase N,et al. Three-dimensional finite element analysis of stress distribution in composite resin cores with fiber posts of varying diameters. J Dent Mater,2008,27(1):49-55.
23
Mahmoudi M,Saidi A,Gandjalikhan Nassab SA,et al. A three-dimensional finite element analysis of the effects of restorative materials and post geometry on stress distribution in mandibular molar tooth restored with post-core crown. Dent Mater J,2012,31(2):171-179.
24
Al-Omiri MK,Rayyan MR,Abu-Hammad O. Stress analysis of endodontically treated teeth restored with post-retained crowns:A finite element analysis study. J Am Dent Assoc,2011,142(3):289-300.
25
Dejak B,Młotkowski A. Three-dimensional finite element analysis of strength and adhesion of composite resin versus ceramic inlays in molars. J Prosthet Dent,2008,99(2):131-140.
26
Lin CL,Chang YH,Pa CA. Estimation of the risk of failure for an endodontically treated maxillary premolar with MODP preparation and CAD/CAM ceramic restorations. J Endod,2009,35(10):1391-1395.
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