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:: Volume 26, Issue 1 (1-2014) ::
J Iran Dent Assoc 2014, 26(1): 1-5 Back to browse issues page
Effect of Different Cusp Coverage Patterns on Fracture Resistance of Maxillary Premolar Teeth in MOD Composite Restorations
Narges Panahandeh * 1, Najmeh Johar2
1- Assistant Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences. Tehran, Iran , nargespanahandeh@yahoo.com
2- Postgraduate Student, Department of Operative Dentistry, School of Dentistry, Shahid Sadoughi University of Medical Sciences. Yazd, Iran.
Abstract:   (11540 Views)

  Background and Aim : Tooth fracture is a common complication following MOD restorations. This study sought to assess the effect of different cusp coverage patterns on fracture resistance of maxillary premolar teeth in MOD composite restorations .

  Materials and Methods : In this in vitro experimental study, 40 human maxillary sound premolar teeth were chosen and stored in Chloramine solution. Using bleaching shield, an over impression was made from each tooth and then wide MOD cavities were prepared. The teeth were randomly divided into 4 groups of 10 each: Group A, without cusp coverage Group B, with 1.5 mm palatal cusp coverage Group C, with 1.5 mm buccul cusp coverage and group D, with 1.5 mm both buccal and palatal cusp coverage. The cavities were restored using Z100 composite resin and the prepared over impressions (in order to restore the normal anatomy of teeth). The teeth were then stored in water at 37°C for 24h and their fracture resistance was assessed using Universal Testing Machine. The load at fracture was recorded in N. Data were analyzed using one-way ANOVA and Tukey’s test with 95% CI .

  Results : The mean fracture strength was 873.11±243.5 N in group A, 750.53±270.7 N in group B, 824.22±330.2 N in group C and 1499.25±305 N in group D. The results showed that the fracture resistance of MOD restorations with the coverage of both cusps was significantly more than that of other groups ( P<0.05 ).

  Conclusion : MOD restorations with cusp coverage in maxillary premolar teeth increased the fracture strength of teeth against compressive forces. However, covering only one cusp had no significant effect on fracture strength.

  
Keywords: Onlay, Fractures, Composite
Full-Text [PDF 505 kb]   (3656 Downloads)    
Type of Study: Original | Subject: Restorative Dentistry
References
1. Sanei M, Torabzadeh H. Influence of composite thickness on fracture resistance of direct restorations in root canal treated teeth. [Thesis]. Tehran: Dental school. Shahid Beheshti Univer-sity of Medical Sciences; 2006-7.
2. Summit B, Robbins J, Hilton J, Schwarz S. A contemporary approach. IN: Summit B, Rob-bins J, Schwarz S. Fundermental of operative dentistery. 3th ed. [S.L]: Quintessence Publishing Co; 2006, 514-537.
3. Safaei A, Aminian R. The influence of cavity design preparation on fracture resistance of posterior direct resin composite restorations. [Thesis]. Tehran: Dental School. Shahid Be-heshti University of Medical Sciences; 2009,10.
4. Khera Satia C, Carpenter Chistopher W, Vetter James D, Staley Robert N. Anatomy of Casps of Posterior Teeth and their Fracture Potential. J Prosthet Dent. 1990 Aug; 64(2):139-147.
5. Phuntikaphadr V. Effect of direct adhessive restoration on cuspal stiffness of endodontically treated premolars. [Thesis]. [S.L]: Mahidal University; 2004, 13-26.
6. Hilton TJ, Broom JC. Direct posterior static restoration. In: Summitt. Fundamentals of Operative Dentistery. 3rd ed. USA: Quintes-sence; 2006, 236-7.
7. Burke FJT. Tooth fracture in vivo and in vitro. J Dent. 1992 June; 20(3):131-139.
8. Assif D, Nissan J, Gafni Y, Gordon M. Assessment of the resistance to fracture of endodontically treated molars restored with amalgam. J Prosthet Dent. 2003May; 89(5):462-5.
9. Ortega VL, Pegoraro LF, Conti PCR, Dovalle AL, Bonfante G. Evaluation of fracture re-sistance of endodontically treated maxillary premolars restored with seromer with heat-pressed ceramic inleys and fixed with dual resin cements. J Oral Rahabil. 2004 Apr; 31(4):393-7.
10. Soares Carlos Joes, Marcondes Martins Luis Roberto, Fonseca Rodrige Borges, Correr-Sobrinho Lourenco, Fernandes-Neto Alferedo Julio. The influence of cavity prepara-tion design on fracture resistance of posterior leucite-reinforced ceramic restoration. J Prosthet Dent. 2006 June; 95(6):421-429.
11. Bitter K, Meyer-LH, Fotiadis N, Blunch U, Neumann K, Kielbassa AM, et al. Influence of endodontic treatment, post insertion, and ceram-ic restoration on the fracture resistance of max-illary premolars. Inter Endod J. 2010June;43(6):469-477.
12. Alavi AA, Zahedi S. Evaluation of fracture re-sistance of teeth restored with three types of tooth colored onlay. J Mashhad Dent School. 2007; 30(3-4):289-300.
13. Burke F, Wilson N, Watts D. The effect of cus-pal coverage on the fracture resistance of teeth restored with indirect composite resin restora-tions. Quintessence Int. 1993 Dec; 24(12):875-880.
14. Mohammadi N, Kahnamoii MA, Yegane PK, Navamipour EJ. Effect of Fiber Post and Cusp Coverage on Fracture Resistance of Endodontically Treated Maxillary Premolars Directly Restorated with Composite Resin. J Endod. 2009 Oct; 35(10):1428-1432.
15. Mondelli R, Francisro L, Ishikiriama S, Kiyoshi F, Otavio De O, Mondelli J. Fracture resistance of weakend teeth restored with condensable resin with and without cusp cover-age. J Applied Oral Sci. 2009 June; 17(3):163-165.
16. Shor A, Nicholls JJ, Phillips KM, Libman WJ. Fatiguemload of teeth restored with bonded di-rect composite and indirect ceramic inleynin MOD cl II cavity preparation. Int J Prosthod. 2003 Jan-Feb; 16(1):64-9.
17. Eakle WS, Maxweel EH, Braly BU. Fracture of posterior teeth in adults. J Am Dent Asso. 1986; 112(2):215-18.
18. Lina Chun-Li, Changb Yen-Hsiang, Liuc Perng-Ru. Multi-factorial analysis of a cusp-replasing adhesive premolar restoration: A finite element study. J Dent. 2008 Mar; 36(3):194-203.
19. Santiago LC, Pegoraro LF, Bonfante G. Influence of different metal restoration with resin on fracture resistance of endodontically treated maxillary premolars. J Prosthet Dent. 1997 Apr; 77 (4):365-69.
20. 20- Hanning C, Westphal Ch, Becker K, Attin T. Fracture resistance of endodontically treated maxillary premolars restored with CAD/CAM ceramic inleys. J Prosthet Dent. 2005 Oct; 94(4): 342-49.
21. 21- Kuijsa RH, Fennisb WMM, Kreulenb CM, Roestersa FJM, Verdonschotc N, Creugersb NHJ. A comparison of fatigue resistance of three materials for cusp-replacing adhesive restora-tion. J Dent. 2006 Jan; 34(1):19-25.
22. 22- Hood JA. Biomechanism of the intact, pre-pared and restored tooth. Int Dent J. 1991Feb;41(1):25-32.
23. 23- Soares Carlos Joes, Soares Paulo Vinicius, Santos-filbo Paulo Cesar De Freitas, Castero Carolina Guimaraes, Magalbaes Denildo, Ver-sluis Antbeunis. The Influence of Cavity Design and Glass Fiber Post on Biomechanical Behav-ior of Endodontically Treated Premolars. J En-dod. 2008 Aug; 34(8):1015-1019.
24. Ghavamnasiri M, Hosseini A, Aghili yeganeh F. Assessment of fracture resistance of endodonti-cally treated molars. Beheshti Uni Dent J. 2006; 24(3):369-77.
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Panahandeh N, Johar N. Effect of Different Cusp Coverage Patterns on Fracture Resistance of Maxillary Premolar Teeth in MOD Composite Restorations. J Iran Dent Assoc 2014; 26 (1) :1-5
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Volume 26, Issue 1 (1-2014) Back to browse issues page
Journal of Iranian Dental Association

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