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:: Volume 25, Issue 2 (4-2013) ::
J Iran Dent Assoc 2013, 25(2): 124-128 Back to browse issues page
Evaluation of the Effect of Glass-Fiber Post Length on Fracture Resistance of Endodontically Treated Central Incisors
Zafar Mahdavi Izadi1 , Ezatollah Jalalian * 2, Mohammad hasan Salari1 , Goldis Khalili Shorini3 , Tahmineh Safaei4 , Shima Azimzad4 , Mohammad javad Kharazi Fard5
1- Assistant Professor, Department of Fixed Prosthodontics, School of Dentistry, Dental Branch, Islamic Azad University, Tehran, Iran
2- Associate Professor, Department of Fixed Prosthodontics, School of Dentistry, Dental Branch, Islamic Azad University, Tehran, Iran , dr_e_jalalian@yahoo.com
3- Dentist
4- Dentistry Student, School of Dentistry, Dental Branch, Islamic Azad University, Tehran, Iran
5- Research Member of Dental Research Center Tehran University of Medical Science. Tehran, Iran
Abstract:   (13202 Views)

  Background and Aim : Use of glass fiber posts is of widespread acceptance in restoring root canal treated teeth, but studies concerning the most proper length of the post to provide the utmost fracture resistance are inadequate. The aim of this study was to evaluate the effect of glass fiber post length on fracture resistance of root canal treated central incisors .

  Materials and Methods : This experimental study was carried out on 40 maxillary central incisors in 4 groups of 10 each. RDT posts and cement was used in this experimental study with the lengths of 6, 8, 10, and 12 mm in the study groups. The samples were debrided and decoronated at the CEJ levels and endodontically treated using step-back technique. RDT drills were used for post space preparation. Then, the root canal walls were etched and the posts cemented in place. The composite cores were then prepared at the height of 5 mm and samples mounted 2mm down to their CEJ levels within acrylic blocks. An impression material (Impregum, 3M, ESPE) with a thickness of 0.2mm was used to simulate PDL around the samples. The samples were subjected to compressive forces at a 135-degree angle to their long axes using a Universal Testing Machine. Data pertaining to the fracture of the samples were analyzed using ANOVA and Tukey statistical tests .

  Results : The maximum resistance to fracture was recorded in 8-and 10-mm-long posts and the minimum was observed in the lengths of 6 and 12 mm. Statistical tests showed a significant difference between 8- and 10-mm-long posts with those having lengths of 6 and 12 mm in terms of fracture resistance. There was no significant difference between 8- and 10-mm-long posts as well as 6- and 12-mm-long ones.

  Conclusion: It can be concluded that the length of post is influential in the fracture resistance of the root so that the maximal resistance can be obtained in 8 to 10 mm of length and such lengths can be recommended for non-metal posts .

 

 

 

Keywords: Glass fiber post, lumiglass composite, impregum
Full-Text [PDF 169 kb]   (2714 Downloads)    
Type of Study: Original | Subject: Prosthodontics
References
1. Santos-Filho PC, Castro CG, Silva GR, Campos RE, Soares CJ. Effects of post system and length on the strain and fracture resistance of root filled bovine teeth. Int Endod J. 2008 Jun; 41(6):493-501.
2. Adanir N, Belli S. Evaluation of different post lengths’ effect on fracture resistance of a glass fiber post system. J Europ J Dent. 2009 Jan; 8(3): 57-64.
3. Black G.V. Method of grafting artificial crowns on roots of teeth. J Mo Dent. 1869;1:233.
4. Nandini VV, Vankatesh V. Current concepts in the restoration of endodontically treated teeth. J Indian prosthod Soc. 2006 Jan;6(2):63-67.
5. Assif D, Gorfil C. Biomechanical considera-tions in restoring endodontically treated teeth. J prosthet Dent. 1994 Jan;71(6):565-7.
6. Ya–xing Z, wei-hong Z, Zhi-yue Lu, Ke-li W. Fracture strength of custom – fabricated celay all-ceramic post and core restored endodontical-ly treated teeth. J Chin Med. 2006 Nov; 119(21): 1815-20.
7. Jalalian E, Nikouei S, Shams S, Jamhari S. Comparison of effect of non-metal posts on the fracture resistance of restored teeth with com-posite. Shiraz Univ Dent J. 2010;10(4):299-308.
8. Salari MH, Jalalian E, Soleimani S. Ferrule ef-fect onthe fracture resistance of teeth restored with bonded post and cores. J Islamic Dental Asso. 2007 Sum;10(2):86-90.
9. Scotti R, Valandro LF, Galhano GA, Baldissrra P, Bottino MA. Effect of post length on the fa-tigue resistance of bovine teeth restored with bonded fiber posts: A pilot study. Int J Pros-thod. 2006 Sep-Oct;19(5):504-6.
10. Schiavetti R, García-Godoy F, Toledano M, Mazzitelli C, Barlattani A, Ferrari M, Osorio R. Comparison of fracture resistance of bonded glass fiber posts at different lengths. Am J Dent. 2010 Aug;23(4):227-30.
11. Ng CC, Dumbrigue HB, Al- Bayat MJ, Griggs, Wake field CW. Influence of remaining coronal structure location on the fracture resistance of restored endodontically treated anterior teeth. J Prosthet Dent. 2006 Apr:95(4):290-4.
12. Mclaren JD, Mclaren CH, Yaman P, Bin-shuwaish M, Dennison J, Mcdonald N. The ef-fect of post type and length on the fracture re-sistance of endodontically treated teeth. J Pros-thet Dent. 2009; 101:174-182.
13. Buttle L, Krastl G, Lorch H, Naumann M, Zitz-mann NU, Weiger R. Influence of post fit and post length on fracture resistance. J Inter Endod. 2009;42:47-53.
14. Gu XH, Huang JP, Wang XX. An experimental study on fracture resistance of metal-ceramic crowned incisors with different post-core sys-tems. Zhonghua Kou Qiang Yi Xue Za Zhi. 2007 Mar; 42(3):169-72.
15. Cecchin D, Farina AP, Guerreiro CA, Carlini-Júnior B. Fracture resistance of roots prostheti-cally restored with intra-radicular posts of dif-ferent lengths. J Oral Rehabil. 2010 Feb;37(2):116-22.
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Mahdavi Izadi Z, Jalalian E, Salari M H, Khalili Shorini G, Safaei T, Azimzad S et al . Evaluation of the Effect of Glass-Fiber Post Length on Fracture Resistance of Endodontically Treated Central Incisors. J Iran Dent Assoc 2013; 25 (2) :124-128
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Volume 25, Issue 2 (4-2013) Back to browse issues page
Journal of Iranian Dental Association

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