sina.com com.cn (2005BAI 16B05)* :R318 :B : (2009)

Size: px

Start display at page:

Download "3 1 100081 2 100083 1977 sina.com 100081 com.cn (2005BAI 16B05)* :R318 :B :1673-8225 (2009)17-03251-05 2009-0"

炮琰仝
7 years ago
Views:

1 Journal of Clinical Rehabilitative Tissue Engineering Research April 23, 2009 Vol.13, No.17 3 * Fiber post-core restoration for three types of incisor crown defects: Finite element analysis of Jie En-si 1, Shi Li 2, Liu Peng 1, Deng Xu-liang 1, Wang Xin-zhi 1 Abstract BACKGROUND: Selection of an intact tooth, anatomical value should be consistent with the anatomy data of Chinese teeth on adult incison vitro. Dental cone-beam CT scanning was used for image processing to reversely construct three-dimensional finite element models of three different types of dental defects-fiber post and core-all-ceramic crowns in accordance with crown and dentin shoulder from the volume of the different defect. Model 1 of crown transverse defects, with the integrity of the dentin 2 mm ; Model 2 of crown mesial-distal oblique defects, missing parts of dentin ; Model 3 of crown transverse defects, completely missing. ABAQUS was used for three-dimensional finite element analysis to compare the three models after loading the. The distribution of teeth with incomplete and complete 2 mm were similar and significantly lower than that without dentin shoulder collar teeth model. Fiber resin post and core for restoration of complete 2 mm displays the best effect; it can also be used to restore the incompletely defect from near distal oblique defect; However, it is not favorable to restore the defects without, which increases possibility of defluxion and fracture. Jie ES, Shi L, Liu P, Deng XL, Wang XZ. Fiber post-core restoration for three types of incisor crown defects: Finite element analysis of.zhongguo Zuzhi Gongcheng Yanjiu yu Linchuang Kangfu. 2009;13(17): [ 1 CT mm 2 3 ABAQUS 3 doi: /j.issn [J] (17): [ 1 Department of , China; 2 Institute of Nuclear and New Energy Technology, Tsinghua , China Jie En-si, Studying for master s degree, Attending physician, Department of , China jans77210@sina.com Correspondence to: Wang Xin-zhi, Professor, Chief physician, Doctoral supervisor, Department of , China xinzwang@sina.com. cn Supported by: the National Science and Technology Supporting Program of China, No. 2005BAI 16B05* 0 [1] [2-3] [4] 2 mm [5] 2 mm [6] [7] [8-9] 3 Received: Accepted: ISSN CN /R CODEN: ZLKHAH 3251

BACKGROUND: Selection of an intact tooth, anatomical value should be consistent with the anatomy data of Chinese teeth on adult incison vitro.

2 jans77210@ sina.com xinzwang@sina. com.cn (2005BAI 16B05)* :R318 :B : (2009) ( /G A) [10] 1 4 cm 4 cm 8 cm Cone-beam CT () 0.2 mm 40 BMP Mimics 10.0 ABAQUS Figure 1 All organization icon 1 1 Table 1 Tissue grading all organization icon a: Model 1: the crowns of transverse defect with intact of 2 mm high mm mm0.1 mm 2 [11-19] 2 Table 2 Mechanical parameters of materials of three-dimensional finite element models Media b: Model 2: the crowns of mesial-distal oblique absence of c: Model 3: Incisal crowns of transverse defect without Figure 2 With enamelo-cemental junction as a reference plane, three models of dentin defects from the shoulders were established. The site of loading: maxillary central incisor lateral tongue 1/3 with 1/3 at the junction of the mid-point line, 200 N and 135 between the load direction and teeth long axis 2 3 1/3 1/3 200 N 135 Elastic modulus (GPa) Poisson's ratio Tissue grading All ceramic crown Periodontal ligament Fiber post Resin bonding Dentin Resin core Gutta tip Cancellous bone Cortical bone Color Red Purple Blue White Light blue Yellow Cyan-blue Light gray Dark gray Alumina infiltration of porcelain Periodontal ligament Fiber post Resin bonding Dentin Resin core Gutta tip Cancellous bone Cortical bone mm 2 2 mm 0 mm /3 1/3 200 N [20] ABAQUS 3252 P.O. Box 1200, Shenyang cn.zglckf.com

0 ABAQUS 3 1 1 Figure 1 All organization icon 1 1 Table 1 Tissue grading all organization icon a: Model 1: the crowns of transverse defect with intact of 2 mm high 629 946 118 671 0.04 mm 0.075 mm0.

3 . 3 ( S1)(VonMises) Table 3 Max principal and Von mises of adhesive layer in three models (MPa) Model Max principal Von mises Model1 (2 mm complete ) Lingual Labial Model2 (mesial-distal oblique defects) Lingual Labial Model3 (without ) Lingual Labial intact absence of Figure 4 Von mises distribution of adhesive layer in three models Table 4 Max principal and Von mises of post layer in three models (MPa) Model Max principal Von mises 1( 2 mm ) 2( ) 1 3() 1( 2 mm ) 2( ) 1 3() 3 3 Model1(2 mm complete ) Model2 (mesial-distal oblique defects,) Model3 (without ) ( 2 mm ) 2( ) 1 3() 1( 2 mm ) 2( ) 3() 3 5 intact absence of Figure 3 Max principal of adhesive layer in three models intact of mesial-distal oblique defects, with partly absence of Figure 5 Max principal of post layer in three models 5 3 ISSN CN /R CODEN: ZLKHAH 3253

57 intact absence of Figure 4 Von mises distribution of adhesive layer in three models 4 2.

4 3 6 intact 3.1 1( 2 mm) [21-25] 2 mm 2( ) 2 mm /3 1/3, 3254 absence of Figure 6 Von mises of post layer in three models 6 [26] 3 3 [27] 3.3 Cone-beam CT 0.2 mmct 0.5~0.7 mm 4 [1] Sadek FT, Monticelli F, Goracci C, et al. Bond strength performance of different resin composites used as core materials around fiber posts. Dent Mater. 2007; 23(1): [2] Zhang XH, Wang XZ. The evaluation of the carbon fiber post system on restoration of teeth defect in children. Chin Med J (Engl). 2006;119(10): [3] Zhang XH, Tong D, Wang XZ. Xiandai Kouqiang Yixue Zazhi. 2003; 17(3): ,,. [J]., 2003, 17(3): [4] Zou B. Zhonghua Yixue Meixue Meirong Zazhi. 2006;12(5): DT Light-post [J]., 2006,12(5): [5] Ferrari M, Cagidiaco MC, Goracci C, et al. Long-term retrospective study of the clinical performance of fiber posts. Am J Dent.2007;20(5): [6] Naumann M, Preuss A, Rosentritt M. Effect of incomplete crown s on load capacity of endodontically treated maxillary incisors restored with fiber posts, composite build-ups, and all-ceramic crowns: an in vitro evaluation after chewing simulation. Acta Odontol Scand. 2006;64(1): [7] Wakabayashi N, Ona M, Suzuki T, et al. Nonlinear finite element analyses: Advances and challenges in dental applications. J Dent. 2008;36: [8] Ichim I, Kuzmanovic DV, Love RM. A finite element analysis of design on restoration resistance and distribution of within a root. Int Endod J 2006;39(6): [9] Pierrisnard L, Bohin F, Renault P, et al. Corono-radicular reconstruction of pulpless teeth: a mechanical study using finite element analysis. J Prosthet Dent.2002;88(4): [10] Wang HY. Zhonghua Kouqiang Yixue Zazhi. 1959;7(3):149.. [J]., 1959, 7(3):149. P.O. Box 1200, Shenyang cn.zglckf.com

[2] Zhang XH, Wang XZ. The evaluation of the carbon fiber post system on restoration of teeth defect in children. Chin Med J (Engl). 2006;119(10):809-813. [3] Zhang XH, Tong D, Wang XZ.

5 . 3 [11] Imanishi A, Nakamura T, Ohyama T, et al. 3-D Finite element analysis of all-ceramic posterior crowns. J Oral Rehabil. 2003;30(8): [12] Pegoretti A, Fambri L, Zappini G, et al. Finite element analysis of a glass fibrc reinforced composite endodontic post. Biomaterials. 2002;23: [13] Farah JW. Finite element analysis of a mandibular model. J Oral Rehabil. 1988;15:615. [14] Strassler HE, Cloutier PC. A new fiber post for esthetic dentistry. Compend Contin Edue Dent. 2003;15(2):81-84; [15] Yu HY, Du CS, Chao YL. Huaxi Kouqiang Yixue Zazhi. 1998;16(4): 365.,,. [J].,1998,16(4):365. [16] Kinney JH, Gladden JR, Marshall GW, et al. Resonant ultra-sound spectroscopymeasurments of the elastic constants of human dentin. J Biomech. 2004, 37(4): 437 [17] Gurcan E,Sema B,Mustafa K. Evaluation of two post core systems using two different method. J Endodon. 2002; 28(7): [18] Zhang XC, Mi NY, Wang Y, et al. Zhongshan Yike Daxue Xuebao. 2000;21(4): ,,,. [J].,2000,21(4): [19] Ho MH,Lee SY,Hsiang HC,et al. Three-dimension finite analysis of effects of posts on strss distribution in dentin. J Prosthet Dent. 1994;72(4): [20] Yaman SD, Alacam T, Yaman Y. Analysis of distribution in a vertically condensed maxillary central incisor root canal. J Endod. 1995;21: [21] Sorensen JA, Engelman MJ. Ferrule design and fracture resistance of endodontically treated teeth.j Prosthet Dent. 1990; 63(5): [22] Hu S, Osada T, Shimizu T, et al. Resistance to cyclic fatigue and fracture of structurally compromised root restored with different post and core restorations. Dent Mater J. 2005;24(2): [23] Torbjrner A,Karlsson S,Odman PA.Survival rate and failure characteristics for two post designs J Prosthet Dent. 1995; 73(5): [24] Akkayan B. An in vitro study evaluating the effect of length on fracture resistance of endodontically treated teeth restored with fiber-reinforced and zirconia dowel systems. J Prosthet Dent. 2004;92(2): [25] Naumann M, Preuss A, Frankenberger R. Reinforcement effect of adhesively luted fiber reinfoced composite versus titaniumposts. Dent Mater. 2007;23(2): [26].Sorrentino R,Aversa R,Ferro V,et al Three-dimensional finite element analysis of strain and distributions in endodontically treated maxillary central incisors restored with different post,core,crow materials. Dent Mater. 2007;23(8):983. [27] Newman MP, Yaman P, Dennison J. Fracture resistance of endodontically treaed restored with comsite posts. J Prosthet Dent. 2003;89(4): ISSN CN /R CN /R ISSN / ISSN CN /R CODEN: ZLKHAH 3255

Finite element analysis of a mandibular model. J Oral Rehabil. 1988;15:615. [14] Strassler HE, Cloutier PC. A new fiber post for esthetic dentistry. Compend Contin Edue Dent.

定稿

第 31 卷第 8 期 2014 年 8 月机电工程 Journal of Mechanical & Electrical Engineering Vol. 31 No. 8 Aug. 2014 DOI:10.3969/j.issn.1001-4551.2014.08.008 * 基于逆向技术的骨盆环三维重构与结构分析 1,2 田卫军, 李郁 (1.