RSS-Feed abonnieren
PDF herunterladen
DOI: 10.1055/s-0040-1721236
The Effect of Irradiance on the Degree of Conversion and Volumetric Polymerization Shrinkage of Different Bulk-Fill Resin-Based Composites: An In Vitro Study
Funding None.
Abstract
Objective The influence of different light-emitting diode (LED) curing light intensities on the degree of conversion (DC) and volumetric polymerization shrinkage (VPS) of bulk-fill resin-based composite (RBC) restorative materials was evaluated.
Materials and Methods Twenty-four specimens of each RBC material (Filtek one bulk-fill posterior, Reveal HD Bulk, Tetric N-Ceram, and Filtek Z350) were prepared. The RBCs were shaped in molds and cured using an LED curing light unit at high-intensity (1,200 mW/cm2) for 20 seconds and low-intensity (650 mW/cm2) for 40 seconds Fourier-transform infrared (FTIR) spectroscopy was used to determine the DC and microcomputed tomography was used to evaluate VPS. Data were analyzed using one- and two-way ANOVA, independent t-test, and Tukey’s and Scheffe’s post hoc multiple comparison tests.
Results With high-intensity curing light, Reveal HD showed the highest DC (85.689 ± 6.811%) and Tetric N-Ceram the lowest (52.60 ± 9.38%). There was no statistical difference in VPS when using high- or low-intensity curing light. The highest VPS was observed for Reveal HD (2.834–3.193%); there was no statistical difference (p > 0.05) among the other RBCs.
Conclusion Curing light intensities do not significantly influence the VPS of RBC materials. Reveal HD bulk cured with high-intensity light had the highest DC.
Keywords
curing light intensity - bulk-fill resin-based composites - photopolymerization - FTIR spectroscopy - degree of conversion - volumetric polymerization shrinkagePublikationsverlauf
Artikel online veröffentlicht:
15. Dezember 2020
© 2020. European Journal of Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, Second Floor, Sector -2, NOIDA -201301, India
-
References
- 1 Stansbury JW. Curing dental resins and composites by photopolymerization. J Esthet Dent 2000; 12 (06) 300-308
- 2 Ilie N, Bucuta S, Draenert M. Bulk-fill resin-based composites: an in vitro assessment of their mechanical performance. Oper Dent 2013; 38 (06) 618-625
- 3 Lempel E, Czibulya Z, Kunsági-Máté S. et al. Quantification of conversion degree and monomer elution from dental composite using HPLC and micro-Raman spectroscopy. Chromatographia 2014; 77: 1137-1144
- 4 Alshali RZ, Silikas N, Satterthwaite JD. Degree of conversion of bulk-fill compared to conventional resin-composites at two time intervals. Dent Mater 2013; 29 (09) e213-e217
- 5 Noronha Filho JD, Brandão NL, Poskus LT, Guimarães JG, Silva EM. A critical analysis of the degree of conversion of resin-based luting cements. J Appl Oral Sci 2010; 18 (05) 442-446
- 6 Rueggeberg FA, Ergle JW, Mettenburg DJ. Polymerization depths of contemporary light-curing units using microhardness. J Esthet Dent 2000; 12 (06) 340-349
- 7 Leprince JG, Leveque P, Nysten B, Gallez B, Devaux J, Leloup G. New insight into the “depth of cure” of dimethacrylate-based dental composites. Dent Mater 2012; 28 (05) 512-520
- 8 Flury S, Hayoz S, Peutzfeldt A, Hüsler J, Lussi A. Depth of cure of resin composites: is the ISO 4049 method suitable for bulk fill materials?. Dent Mater 2012; 28 (05) 521-528
- 9 Pianelli C, Devaux J, Bebelman S, Leloup G. The micro-Raman spectroscopy, a useful tool to determine the degree of conversion of light-activated composite resins. J Biomed Mater Res 1999; 48 (05) 675-681
- 10 de la Macorra JC, Pérez-Higueras JJ. Microtensile bond strength test bias caused by variations in bonded areas. J Adhes Dent 2014; 16 (03) 207-219
- 11 Burgess J, Cakir D. Comparative properties of low-shrinkage composite resins. Compend Contin Educ Dent 2010; 31 (Spec No 2) 10-15
- 12 Ferracane JL, Hilton TJ. Polymerization stress: is it clinically meaningful. ? Dent Mater 2016; 32 (01) 1-10
- 13 Kleverlaan CJ, Feilzer AJ. Polymerization shrinkage and contraction stress of dental resin composites. Dent Mater 2005; 21 (12) 1150-1157
- 14 Atria PJ, Sampaio CS, Cáceres E. et al. Micro-computed tomography evaluation of volumetric polymerization shrinkage and degree of conversion of composites cured by various light power outputs. Dent Mater J 2018; 37 (01) 33-39
- 15 Sampaio CS, Atria PJ, Rueggeberg FA. et al. Effect of blue and violet light on polymerization shrinkage vectors of a CQ/TPO-containing composite. Dent Mater 2017; 33 (07) 796-804
- 16 Bunsen RW, Roscoe HE. Photochemical studies. Ann Phys 1923; 108: 193
- 17 Roulet J-F, Price R. Light curing - guidelines for practitioners - a consensus statement from the 2014 symposium on light curing in dentistry held at Dalhousie University, Halifax, Canada. J Adhes Dent 2014; 16 (04) 303-304
- 18 Galvão MR, Costa SX, Victorino KR. et al. Influence of light guide tip used in the photo-activation on degree of conversion and hardness of one nanofilled dental composite. Laser Phys 2010; 20: 2050-2055
- 19 Sgarbi SC, Pereira SK, Martins JMH. et al. Degree of conversion of resin composites light activated by halogen light and led analyzed by ultraviolet spectrometry. Rev Clín Pesq Odontol Curitiba 2010; 6: 223-230
- 20 Cekic-Nagas I, Egilmez F, Ergun G. The effect of irradiation distance on microhardness of resin composites cured with different light curing units. Eur J Dent 2010; 4 (04) 440-446
- 21 Galvão MR, Caldas SGFR, Bagnato VS, de Souza Rastelli AN, de Andrade MF. Evaluation of degree of conversion and hardness of dental composites photo-activated with different light guide tips. Eur J Dent 2013; 7 (01) 86-93
- 22 Yoshikawa T, Morigami M, Sadr A, Tagami J. Acceleration of curing of resin composite at the bottom surface using slow-start curing methods. Dent Mater J 2013; 32 (06) 999-1004
- 23 Lima RBW, Troconis CC, Moreno MBP, Murillo-Gómez F, De Goes MF. Depth of cure of bulk fill resin composites: a systematic review. J Esthet Restor Dent 2018; 30 (06) 492-501
- 24 Wydra JW, Cramer NB, Stansbury JW, Bowman CN. The reciprocity law concerning light dose relationships applied to BisGMA/TEGDMA photopolymers: theoretical analysis and experimental characterization. Dent Mater 2014; 30 (06) 605-612
- 25 Hasslen JA, Barkmeier WW, Shaddy RS, Little JR. Depth of cure of high-viscosity bulk-fill and conventional resin composites using varying irradiance exposures with a light-emitting diode curing unit. J Oral Sci 2019; 61 (03) 425-430
- 26 Majidinia S, Bagheri H, Ramezani S. et al. Polymerization shrinkage, shrinkage stress, and degree of conversion in bulk-fill resin composites after different photo-activation methods. Dent Hypotheses 2020; 11: 4-10
- 27 Jain L, Mehta D, Meena N, Gupta R. Influence of light energy density, composite type, composite thickness, and postcuring phase on degree of conversion of bulk-fill composites. Contemp Clin Dent 2018; 9 (Suppl. 01) S147-S152
- 28 Dickens SH, Stansbury JW, Choi KM, Floyd CJE. Photopolymerization kinetics of methacrylate dental resins. Macromolecules 2003; 36: 6043-6053
- 29 Khatri CA, Stansbury JW, Schultheisz CR, Antonucci JM. Synthesis, characterization and evaluation of urethane derivatives of Bis-GMA. Dent Mater 2003; 19 (07) 584-588
- 30 Gonçalves F, Boaro LCC, Miyazaki CL, Kawano Y, Braga RR. Influence of polymeric matrix on the physical and chemical properties of experimental composites. Braz Oral Res 2015; 29 (01) S1806-83242015000100307
- 31 Abbasi M, Moradi Z, Mirzaei M, Kharazifard MJ, Rezaei S. Polymerization shrinkage of five bulk-fill composite resins in comparison with a conventional composite resin. J Dent (Tehran) 2018; 15 (06) 365-374
- 32 Rizzante FAP, Duque JA, Duarte MAH, Mondelli RFL, Mendonça G, Ishikiriama SK. Polymerization shrinkage, microhardness and depth of cure of bulk fill resin composites. Dent Mater J 2019; 38 (03) 403-410
- 33 Sampaio CS, Pizarro PG, Atria PJ, Hirata R, Giannini M, Mahn E. Effect of shortened light-curing modes on bulk-fill resin composites. Oper Dent 2020
- 34 Fahim SE, Mostafa MA, Abi-Elhassan MH, Taher HM. Clinical behaviour and marginal sealing of bulk-fill resin composite restorations using light amplified high-intensity LEDs curing: a randomized controlled clinical trial. Open Access Maced J Med Sci 2019; 7 (08) 1360-1368
- 35 Ferracane JL. Developing a more complete understanding of stresses produced in dental composites during polymerization. Dent Mater 2005; 21 (01) 36-42