Abstract
Amaç: Bu çalışmanın amacı ön ısıtma işleminin farklı yapıdaki kompozit rezinlerin polimerizasyon derinliğine etkisini değerlendirmektir.
Gereç ve Yöntem: Bu çalışmada bir metakrilat (Filtek Z550, 3M ESPE) ve bir siloran esaslı kompozit rezin (Filtek Silorane, 3M ESPE) değerlendirilmiştir. İlk grupta kompozit rezinler 4ºC’de buzdolabında, ikinci grupta 23ºC’de oda sıcaklığında bir saat bekletilmiştir. Diğer kompozit tüplerini 37ºC ve 55ºC’ ye getirmek amacıyla kompozit ısıtma cihazı (Micerium, S.p.a., Avegno GE, Italya) kullanılmıştır. Farklı ısıdaki her bir kompozit rezinden teflon kalıplar yardımıyla 4mm çapında ve 8mm derinliğinde disk şeklinde örnekler hazırlanmıştır (n=5). Hazırlanan örnekler kuartz tungsten halojen ışık cihazı (Smart-Lite, Benlioğlu Dental, Ankara, Türkiye) ile 40 saniye polimerize edilmiştir. Polimerizasyon işleminin hemen ardından polimerize olmayan materyal bir spatül ile kazınıp uzaklaştırılmış ve geriye kalan rezin silindirin yüksekliği dijital mikrometre cihazı ile 3 kere ölçülmüş ve bu üç değerin ortalaması kaydedilmiştir. Elde edilen verilerin istatistiksel analizinde tek yönlü ANOVA analizi ve Tukey testi kullanılmıştır.
Bulgular: Aynı ısılarda uygulanan farklı kompozit rezinlerin polimerizasyon derinlikleri arasında istatistiksel olarak anlamlı farklılık bulunmamıştır(p>0,05). Herbir kompozit rezin kendi içerisinde değerlendirildiğinde ön ısıtma işleminin metakrilat esaslı kompozit rezinin polimerizasyon derinliğine etkisi olmadığı saptanmıştır(p>0,05). Siloran esaslı kompozit rezin için en düşük polimerizasyon derinliği değeri 4ºC’de, en yüksek değer ise 23ºC’de kaydedilmiştir, ve fark istatistiksel olarak anlamlıdır(p<0,05).
Sonuç: Ön ısıtma işleminin polimerizasyon derinliğine etkisi kullanılan materyale bağlıdırReferences
- Papacchini F, Magni E, Radovic I, Mazzitelli C, Monticellia F, Goracci C, et al. Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds. Oper Dent 2007;32(4):363-71.
- Yoon TH, Lee YK, Lim BS, Kim CW. Degree of polymerization of resin composites by different light sources. J Oral Rehabil 2002;29(12):1165-73.
- Lohbauer U, Rahiotis C, Kramer N, Petschelt A, Eliades G. The effect of different light-curing units on fatigue behavior and degree of conversion of a resin composite. Dent Mater 2005;21(7):608-15.
- Lien W, Vandewalle KS. Physical properties of a new silorane-based restorative system. Dent Mater 2010;26(4):337-44.
- Leloup G, Holvoet PE, Bebelman S, Devaux J. Raman scattering determination of the depth of cure of light-activated composites: influence of different clinically relevant parameters. J Oral Rehabil 2002;29(6):510-5.
- Bala O, Olmez A, Kalayci S. Effect of LED and halogen light curing on polymerization of resin-based composites. J Oral Rehabil 2005;32(2):134-40.
- Ruyter IE, Oysaed H. Conversion in different depths of ultraviolet and visible light activated composite materials. Acta Odontol Scand 1982;40(3):179-92.
- Quinlan CA, Zisterer DM, Tipton KF, O'Sullivan MI. In vitro cytotoxicity of a composite resin and compomer. Int Endod J 2002;35(1):47-55.
- Ferracane JL, Mitchem JC, Condon JR, Todd R. Wear and marginal breakdown of composites with various degrees of cure. J Dent Res 1997;76(8):1508-16.
- Munoz CA, Bond PR, Sy-Munoz J, Tan D, Peterson J. Effect of pre-heating on depth of cure and surface hardness of light-polymerized resin composites. Am J Dent 2008;21(4):215-22.
- Daronch M, Rueggeberg FA, De Goes MF. Monomer conversion of pre-heated composite. J Dent Res 2005;84(7):663-7.
- Daronch M, Rueggeberg FA, De Goes MF, Giudici R. Polymerization kinetics of pre-heated composite. J Dent Res 2006;85(1):38-43.
- Yap AU, Soh MS, Siow KS. Effectiveness of composite cure with pulse activation and soft-start polymerization. Oper Dent 2002;27(1):44-9.
- Rueggeberg FA, Caughman WF, Curtis JW, Jr., Davis HC. Factors affecting cure at depths within light-activated resin composites. Am J Dent 1993;6(2):91-5.
- 4049 IIS. Dentistry- polymer-based filling restorative and luting materials. International Organization for Standardization 2000.
- DeWald JP, Ferracane JL. A comparison of four modes of evaluating depth of cure of light-activated composites. J Dent Res 1987;66(3):727-30.
- Fan PL, Schumacher RM, Azzolin K, Geary R, Eichmiller FC. Curing-light intensity and depth of cure of resin-based composites tested according to international standards. J Am Dent Assoc 2002;133(4):429-34; quiz 91-3.
- Kusgoz A, Ulker M, Yesilyurt C, Yoldas OH, Ozil M, Tanriver M. Silorane-based composite: depth of cure, surface hardness, degree of conversion, and cervical microleakage in Class II cavities. J Esthet Restor Dent 2011;23(5):324-35.
- Lohbauer U, Zinelis S, Rahiotis C, Petschelt A, Eliades G. The effect of resin composite pre-heating on monomer conversion and polymerization shrinkage. Dent Mater 2009;25(4):514-9.
- Pires JA, Cvitko E, Denehy GE, Swift EJ, Jr. Effects of curing tip distance on light intensity and composite resin microhardness. Quintessence Int 1993;24(7):517-21.
Abstract
Aim: The aim of this study was to evaluate the effect of pre-heating on depth of cure of different composite resins.Materials & Methods: In the current study one methacrylate and one silorane-based composite were evaluated. In the first group the specimens were stored in refrigerator at 4ºC and the second group were kept in room temperature at 23ºC for an hour. In the other groups a composite warmer (Micerium, S.p.a., Avegno GE, Italy) were used for heating the tubes up to 37ºC and 55ºC. Disk shaped specimens of composite resins with different temperatures were prepared in a teflon mold with a diameter of 4 mm and a depth of 8 mm (n=5). The specimens were light cured for 40 s with a quarts tungsten halogen curing unit. Immediatly after irridation, uncured material was scraped away with a spatula. The height of the cylinder of set resin was measured with a digital micrometer and the half of this value was recorded as depth of cure value. Each sample was measured three times and the mean values were recorded. Data were statistically analyzed with one-way ANOVA and Tukey tests.Results: The difference between the different composite resins at the same temperature was not statistically significant(p>0,05). Intragroup comparisons showed that pre-heating the methacrylate-based composite did not effected the depth of cure(p>0,05). The highest depth of cure value for silorane based composite was obtained at 4ºC, and the lowest at 23ºC, and the difference was statistically significant(p<0,05).Conclusion: The effect of pre-heating on depth of cure is materyal depended
References
- Papacchini F, Magni E, Radovic I, Mazzitelli C, Monticellia F, Goracci C, et al. Effect of intermediate agents and pre-heating of repairing resin on composite-repair bonds. Oper Dent 2007;32(4):363-71.
- Yoon TH, Lee YK, Lim BS, Kim CW. Degree of polymerization of resin composites by different light sources. J Oral Rehabil 2002;29(12):1165-73.
- Lohbauer U, Rahiotis C, Kramer N, Petschelt A, Eliades G. The effect of different light-curing units on fatigue behavior and degree of conversion of a resin composite. Dent Mater 2005;21(7):608-15.
- Lien W, Vandewalle KS. Physical properties of a new silorane-based restorative system. Dent Mater 2010;26(4):337-44.
- Leloup G, Holvoet PE, Bebelman S, Devaux J. Raman scattering determination of the depth of cure of light-activated composites: influence of different clinically relevant parameters. J Oral Rehabil 2002;29(6):510-5.
- Bala O, Olmez A, Kalayci S. Effect of LED and halogen light curing on polymerization of resin-based composites. J Oral Rehabil 2005;32(2):134-40.
- Ruyter IE, Oysaed H. Conversion in different depths of ultraviolet and visible light activated composite materials. Acta Odontol Scand 1982;40(3):179-92.
- Quinlan CA, Zisterer DM, Tipton KF, O'Sullivan MI. In vitro cytotoxicity of a composite resin and compomer. Int Endod J 2002;35(1):47-55.
- Ferracane JL, Mitchem JC, Condon JR, Todd R. Wear and marginal breakdown of composites with various degrees of cure. J Dent Res 1997;76(8):1508-16.
- Munoz CA, Bond PR, Sy-Munoz J, Tan D, Peterson J. Effect of pre-heating on depth of cure and surface hardness of light-polymerized resin composites. Am J Dent 2008;21(4):215-22.
- Daronch M, Rueggeberg FA, De Goes MF. Monomer conversion of pre-heated composite. J Dent Res 2005;84(7):663-7.
- Daronch M, Rueggeberg FA, De Goes MF, Giudici R. Polymerization kinetics of pre-heated composite. J Dent Res 2006;85(1):38-43.
- Yap AU, Soh MS, Siow KS. Effectiveness of composite cure with pulse activation and soft-start polymerization. Oper Dent 2002;27(1):44-9.
- Rueggeberg FA, Caughman WF, Curtis JW, Jr., Davis HC. Factors affecting cure at depths within light-activated resin composites. Am J Dent 1993;6(2):91-5.
- 4049 IIS. Dentistry- polymer-based filling restorative and luting materials. International Organization for Standardization 2000.
- DeWald JP, Ferracane JL. A comparison of four modes of evaluating depth of cure of light-activated composites. J Dent Res 1987;66(3):727-30.
- Fan PL, Schumacher RM, Azzolin K, Geary R, Eichmiller FC. Curing-light intensity and depth of cure of resin-based composites tested according to international standards. J Am Dent Assoc 2002;133(4):429-34; quiz 91-3.
- Kusgoz A, Ulker M, Yesilyurt C, Yoldas OH, Ozil M, Tanriver M. Silorane-based composite: depth of cure, surface hardness, degree of conversion, and cervical microleakage in Class II cavities. J Esthet Restor Dent 2011;23(5):324-35.
- Lohbauer U, Zinelis S, Rahiotis C, Petschelt A, Eliades G. The effect of resin composite pre-heating on monomer conversion and polymerization shrinkage. Dent Mater 2009;25(4):514-9.
- Pires JA, Cvitko E, Denehy GE, Swift EJ, Jr. Effects of curing tip distance on light intensity and composite resin microhardness. Quintessence Int 1993;24(7):517-21.
Details
| Primary Language | Turkish |
|---|---|
| Journal Section | Original Research Articles |
| Authors | |
| Publication Date | April 24, 2015 |
| Submission Date | December 4, 2014 |
| Published in Issue | Year 2015Volume: 18 Issue: 2 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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