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:: Volume 24, Issue 3 (7-2012) ::
J Iran Dent Assoc 2012, 24(3): 139-145 Back to browse issues page
Comparison of Temperature Rise in Silorane-Based and Methacrylate-Based Composites Cured by LED and Argon Laser
Masomeh Hasani Tabatabaei1, Mohammad Etrati Khosroshahi2, Ayub Pahlavan1, Sakineh Arami3, Sara Valizadeh *4
1- Associate Professor, Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran
2- Professor, Department of Biomedical Engineering, Amirkabir University of Technology. Tehran, Iran
3- Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran
4- Operative Dentist , valizadeh.sara@yahoo.com
Abstract:   (10571 Views)

  Background and Aim : Temperature rise occurs during photoactivation of dental composites due to the exothermic polymerization reaction and different curing units. The aim of this study was evaluation of temperature rise in two kinds of composites with different curing units .

  Materials and Methods : In this experimental study, five samples of each composite resin (Filtek Z250, Filtek P90) were placed in two-millimeter deep Teflon molds which were 4mm in diameter. Curing was done from top surface with LED, high power LED and argon laser and temperature was recorded by a thermometer placed under the samples. After reaching room temperature, samples were cured and the temperature was recorded again. The time of maximum temperature was also recorded. The data were analyzed by two-way ANOVA and Tukey HSD .

  Results : Composites and curing units had statistically significant influence on the temperature rise (p<0.001) Silorane-based composites showed significantly higher temperature rise than methacrylate-based ones. A significantly lower rise in temperature occurred when illuminationwas performed by argon laser. There was no significant difference in temperature rise between the two types of LEDs. The type of composite had no effect on the time of maximum temperature and in all samples the maximum temperature was recorded at the beginning of irradiation . 

  Conclusion : Silorane-based composites showed higher temperature rise than methacrylate-based ones. Argon laser revealed less heat than LEDs. The maximum temperature rise was recorded at the beginning of irradiation .


Keywords: Polymerization, Temperature, Gas Laser, Filtek Silorane, Methacrylate
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Type of Study: Original | Subject: Restorative Dentistry
1. Olaf A, Martin H. Advance in light curing. Am J Dent. 2000 Feb;13(S Pec no.):77D- 81D.
2. LF Schneider, S Consani, Halogen and LED light curing of composite: Temperature increase and Knoop hardness. Clin Oral Invest. 2006 Jan; 10(1):66-71.
3. Z Tarle, A Knezevic, N Demoli. A Compari-son of composite curing parameters: Effects of light source and curing mode on conversion, temperature rise and polymerization shrinkage. Oper Dent. 2006 Feb;31(2):219-226.
4. A Al-Qudah, CA. Mitchell. Effect of compo-site shade, increment thickness and curing light on temperature rise during photocuring. J Dent. 2007 March;35(3):187-274.
5. Hussey DL, Biagioni PA & Lamey PJ, Ther-mographic measurement of temperature change during resin composite polymerization invivo. J Dent. 1995 Oct;23(5):267-271.
6. Goodie HE, White JM, Gamm B, Watanabe LG. Pulp Chamber temperature changes with visible- light- cured composite in vitro. Dent Mater. 1990 Apr; 6(2):99-102.
7. Mill RW, Jandt KD, Ashworth SH. Dental composite depth cure with halogen and blue light emitting diode technology. Br Dent J. 1999 Apr;186(8):388-91.
8. Sung Jeong, Young-Ran KIM. Effects of LEDs on microhardness and temperature rise of dental composite rsins. Dent Mater J. 2007 Jun; 26(6):838-844.
9. Dotsalva T, Jelinkova H. Shear bond strength after ER: YAG laser radiation conditioning of enamel and dentin. Proc. Spie Dig Lib,1997 Sep; 3192(3):34-39.
10. Vargas M, Cobb D, Schmit J. Polymeriza-tion of composite resin: Argon laser vs conven-tional light. Oper Dent. 1998 Mar-Apr;23(2):87-93.
11. Cobb D, Vargas M, Rundle T. Physical properties of composites cured with conven-tional light or argon laser. Am. J Dent. 1996 Oct,9(5): 199-202.
12. CS Delfino, CSC Pfeifer, RR Braga. Shrink-age stress and mechanical properties of photo-activated composite resin using the argon ion laser. Laser and Optic, Applied Phys B. 2009 Jan;96(1):3366-6.
13. M Hanning, B Bott. In vitro pulp chamber temperature rise during composite resin polymerization with various light curing sourse. Dent Mater,1999 Jul;15(4),275-281.
14. Smail SRL, Patterson CJW, Mclundie AC, Strang R. In vitro temperature rise during visi-ble- light curing of a lining material and posteri-or composite. J Oral Rehabil. 1988 Jul; 15(4): 361- 366.
15. Masutani S, Setcos JC Schnell RW. Temper-ature rise during polymerization of visible light-activated composite resins, Dent Mater. 1988 Aug; 4(4):174-178.
16. Boaro LC, Gonçalves F, Guimarães TC, Fer-racane JL, Versluis A, Braga RR. Polymeriza-tion stress, shrinkage and elastic modulus of current low-shrinkage restorative composites. Dent Mater. 2010 Dec;26 (12):1144-50.
17. Crivello J, Falk B, Zonca MR Jr. Photoin-duced cationic ring-opening frontal polymeriza-tions of oxetanes and oxiranes. J Polym Sci [A]. 2004 Apr;42(7):1630-46.
18. Weinmann W, Thalacker C, Guggenberger R. Siloranes in dental composites. Dent Mater. 2005 Jan; 21(1):68-74.
19. Vesna Miletic, Vladimir ivanovic. Tempera-ture changes in silorane-, ormocer-, and di-methacrylate -based composites and Pulp chamber roof during light-curing. J Esthet Dent. 2009 Apr;21(2):122-131.
20. Knezevic, A. Tarle, Z. Influence of light in-tensity from different curing units upon compo-site temperature rise. J Oral Rehabil. 2005 May; 32(5): 362-7.
21. Tabatabaei M, Motevasselian F. Evaluation of temperature rise and DC in two composites using various curing units. [Thesis]. Tehran: Dent Faculty, Tehran University of Medical Science; 2007.
22. A N S Rastelli, D P Jacomassi. Changes in the temperature of a dental light-cured compo-site resin by different light-curing units. Laser Physics. 2008 Jun 18(8):1003-1007.
23. Jacomassi D, Rastelli D. Degree of conver-sion and temperature increase of a composite resin light cured with an argon laser and blue LED. Laser Physics. 2008 Jun;18(12):1570-1575.
24. Pilo R, Oelgiesser D, Cardash, H S. A sur-vey of output intensity and potential for depth of cure among light-curing units in clinical use. J Dent. 1999 Mar;27(3):235-41.
25. Sakaguchi RL. Douglas W H. Peters M C. Curing light performance and polymerization of composite restorative materials. J Dent. 1992 Jun; 20 (3):183-8.
26. A Santini, C Watterson. Temperature rise within the Pulp chamber during composite resin polymerization using three different light sources. Open Dent J. 2008 Dec; 2(5):137-141.
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Hasani Tabatabaei M, Etrati Khosroshahi M, Pahlavan A, Arami S, Valizadeh S. Comparison of Temperature Rise in Silorane-Based and Methacrylate-Based Composites Cured by LED and Argon Laser. J Iran Dent Assoc 2012; 24 (3) :139-145
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Volume 24, Issue 3 (7-2012) Back to browse issues page
Journal of Iranian Dental Association


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