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:: Volume 24, Issue 2 (4-2012) ::
J Islam Dent Assoc Iran 2012, 24(2): 35-42 Back to browse issues page
Experimental Comparison of Hygroscopic Expansion in Three Different Composite Resins
Farid Zayeri 1, Sara Razmavar2, Kazem Naserinejad3, Alireza Akbarzadeh-Baghban4, Hasan Torabzadeh5, Masoud Salehi6
1- Assistant Professor, Proteomics Research Center, School of Paramedical Sciences, Shahid Beheshti, University of Medical Sciences. Tehran, Iran. , fzayeri@yahoo.com
2- Iranian Center for Dental Research, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
3- MS Student, Department of Biostatistics, School of Paramedical Sciences, Shahid Beheshti University of Medical Sciences. Tehran, Iran
4- Assistant Professor, Department of Biostatistics, School of Paramedical Sciences, Shahid Beheshti University of Medical Sciences. Tehran, Iran
5- Associate Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences. Tehran, Iran
6- Assistant Professor, Department of Statistics and Mathematics, School of Management and Medical Informatics, Tehran University of Medical Sciences. Tehran, Iran.
Abstract:   (17289 Views)
Background and Aim : These days dental composites are very popular because they look good and are similar to human teeth regarding color. Hygroscopic expansion is one of the physical properties of dental composites. A dental composite may lose its efficiency as a restoration material because of water absorption. The objective of this study was to compare the hygroscopic expansion of three dental composites .

 Materials and Methods : In this experimental study, to assess the effective factors of hygroscopic expansion, we used three different dental composites (Kalore, P90 and Z250). The length of these composites in water and saliva were measured eighteen times in a three-month period. We used the marginal modeling technique, in which the correlation between response data can be included for analysis .

 Results : The results of marginal modeling showed that the type of composite is significantly related to hygroscopic expansion (P<0.05) demonstrating the highest hygroscopic expansion for P90 and the lowest for Z250. In addition, time as an independent variable had a statistically significant effect on hygroscopic expansion (P<0.05). However, we found no significant difference between the hygroscopic expansion of saliva and water (P>0.05).

 Conclusion : Overall, our findings showed that hygroscopic expansion is significantly related to the type of composite and time. Therefore, we should utilize the composites with lower hygroscopic expansion (such as Z250) for filling the patients’ teeth .

Keywords: Composite resin, Hygroscopic expansion, Longitudinal studies
Full-Text [PDF 208 kb]   (1969 Downloads)    
Type of Study: Orginal | Subject: Restorative Dentistry
References
1. Roberson T, Heymann H, Swift E. Sturde-vant’s art and science of operative dentistry. [S.L]: Mosby, Elsevier; 2006.
2. Guggenberger R, Weinmann W. Exploring beyond methacrylates. Am J Dent. 2000 Nov; 13 (Spec No):82-4.
3. Braga R, Ferracane J. Alternatives in polymerization contraction stress management. Crit Rev Oral Biol Med. 2004 Jun; 15(3):176-84.
4. Bouillaguet S, Gamba J, Forchelet J, Krejci I, Wataha J. Dynamics of composite polymeriza-tion mediates the development of cuspal strain. Dent Mater. 2006 Oct; 22(10):896-902.
5. Bowen R. Use of epoxy resins in restorative materials. J Dent Res. 1956 Jun; 35(3):360-9.
6. Silikas N, Eliades G, Watts D. Light intensity effects on resin-composite degree of conversion and shrinkage strain. Dent Mater. 2000 Jul; 16 (4):292-6.
7. Causton B, Millet B, Sefton J. The defor-mation of cusps by bonded posterior composite restorations: An in vitro study. Br Dent J.1985 Dec; 159(12):397-400.
8. Palin WM, Fleming GJ. Review low-shrink monomers for dental restorations. Dent Update. 2003 Apr; 30(3):118-22.
9. Vasudeva G. Review monomer systems for dental composites and their future: A review. J Calif Dent Assoc. 2009 Jun; 37(6):389-98.
10. Malhotra N, Kundabala M, Shashirashmi A. Strategies to overcome polymerization shrink-age--materials and techniques. A review. Dent Update. 2010 Mar;37(2):115-25.
11. McCullock A, Smith B. In vitro studies of cuspalmovment produced by adhesive restora-tive materials. Br Dent J. 1986 Dec; 161(11):405-9.
12. Meredith N, Setchell D. In vitro measure-ment of cuspal strain and displacement in com-posite restored teeth. J Dent. 1997 May-Jul; 25 (3-4):331-7.
13. Pearson G, Hegarty S. Cusp movement in molar teeth using dentine adhesives and compo-site filling materials. Biomaterials 1987 Nov; 8 (6):473-6.
14. Martin N, Jedynakiewicz NM, Fisher AC. Dent Mater. Hygroscopic expansion and solu-bility of composite restoratives. Dent Mater. 2003 Mar;19(2):77-86.
15. Rüttermann S, Krüger S, Raab WH, Janda R. Polymerization shrinkage and hygroscopic ex-pansion of contemporary posterior resin-based filling materials--a comparative study.J Dent. 2007 Oct; 35(10):806-13.
16. Sadaghiani M, Saghafi F, BasirShabestari S. [Comparing the effect of light Tip distance cur-ing units LED & Halogen on Z250 composite microhardness]. J Mashhad Dent Sch. 2008 Summer; 32 (2):137-42. (Persian).
17. Lindsey JK. Models for repeated measure-ments. 2nd ed. New York: Oxford University Press; 1999, Chap 14.
18. Fitzmaurice GM, Laird NM, Ware JH. Ap-plied longitudinal analysis. New York: John Wiley & Sons; 2004, Chap 13,14.
19. Catalano PJ. Bivariate modeling of clustered continuous and ordered categorical outcomes. Stat Med. 1997 Apr; 16(8):883-900.
20. Liang KY, Zeger SL. Longitudinal data anal-ysis using generalized linear models. Bio-metrika. 1986 Jan; 73(1):13-22.
21. Diggle P J, Heagerty P, Liang K Y, Zeger S L, Analysis of longitudinal data. 2nd ed. New York: Oxford University Press; 2002.
22. Qu Y, Piedmonte MR, Medendorp SV. La-tent variable models for clustered ordinal data. Biometrics 1995 Mar; 51(1):268-75.
23. Williamson JM, Lipsitz SR, Kim K. Geecat and Geegor: Computer programs for the analy-sis of correlated categorical response data. Comput Methods Programs Biomed. 1999 Jan; 58(1):25-34.
24. Santerre J, Shajii L, Leung B. Relation of dental composite formulations to their degrada-tion and release of hydrolyzed polymeric-resin-derived products. Crit Rev Oral Biol Med. 2001 May; 12(2):136-51.
25. Toledano M, Osorio R, Osorio E, Fuentes V. Sorption and solubility of resin-based restora-tive dental materials. J Dent. 2003 Jan; 31(1):43-50.
26. Momoi Y, McCabe J. Hygroscopic expan-sion of resin based composites during 6 months of water storage. Br Dent J. 1994 Feb; 176(3):91-6.
27. Asmussen E, Jorgensen K. A microscopic investigation of the adaption of some plastic filling materials to dental cavity walls. Acta Odontol Scand J. 1972 Mar; 30(1):3-21.
28. Irie M, Nakai H. Effect of immersion in wa-ter on linear expansion and strength of three base/linear materials. Dent Mater. 1995 Jun; 14 (1):70-7.
29. Wei Y, Silikas N, Zhang Z, Watts DC. Hy-groscopic dimensional changes of self-adhering and new resin-matrix composites during water sorption/desorption cycles. Dent Mater.2011 Mar; 27(3):53-60.
30. Pearson G. Long term water sorption and solubility of composite filling materials. J Dent. 1979 Mar; 7(1):64-8.
31. Klautau EB, Carneiro KK, Lobato MF, Ma-chado SM, Silva e Souza MH Jr. Low shrinkage composite resins: influence on sealing ability in unfavorable C-factor cavities. Braz Oral Res. 2011 Jan-Feb; 25(1):5-12.
32. Guiraldo RD, Consani S, Consani RL, Ber-ger SB, Mendes WB, Sinhoreti MA, et al.Comparison of silorane and methacrylate-based composite resins on the curing light transmission.Braz Dent J. 2010 Jun;21(6):538-42.
33. Palin WM, Fleming GJ, Burke FJ, Marquis PM, Randall RC. The influence of short and medium-term water immersion on the hydrolyt-ic stability of novel low-shrink dental compo-sites. Dent Mater. 2005 Sep; 21(9):852-63.
34. Weinmann W, Thalacker C, Guggenberger R. Siloranes in dental composites. Dent Mater. 2005 Jan; 21(1):68-74.
35. Musanje L, Shu M, Darvel BW. Water sorp-tion and mechanical behaviour of cosmetic di-rect restorative materials in artificial saliva. Dent Mater. 2001 Sep; 17(5):394-401.
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Zayeri F, Razmavar S, Naserinejad K, Akbarzadeh-Baghban A, Torabzadeh H, Salehi M. Experimental Comparison of Hygroscopic Expansion in Three Different Composite Resins. J Islam Dent Assoc Iran. 2012; 24 (2) :35-42
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Volume 24, Issue 2 (4-2012) Back to browse issues page
Journal of Islamic Dental Association of Iran

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