Effect of High-Power Curing on Polymerization Shrinkage and Microhardness of Composite Resins

Öztürk, Nur Selen; Demirci, Mustafa; Tuncer, Safa; Tekçe, Neslihan; Duman Özbilgi, Özge

doi:10.15517/z21whs73

Authors

Nur Selen Öztürk Postgraduate student, University of Istanbul Institute for Health Sciences, Istanbul, Turkey. Author https://orcid.org/0000-0002-8451-6519
Mustafa Demirci Professor & Head, Department of Restorative Dentistry. University of Istanbul, Turkey. Author https://orcid.org/0000-0002-9297-6945
Safa Tuncer Professor Department of Restorative Dentistry. University of Istanbul, Turkey. Author https://orcid.org/0000-0003-2101-3225
Neslihan Tekçe Professor Department of Restorative Dentistry. University of Kocaeli, Turkey. Author https://orcid.org/0000-0002-5447-3159
Özge Duman Özbilgi Postgraduate student Department of Restorative Dentistry. University of Istanbul, Turkey. Author https://orcid.org/0000-0003-0521-4318

DOI:

https://doi.org/10.15517/z21whs73

Keywords:

Composite resins; Dental curing lights; Dental materials; Hardness tests; Polymerization; Mechanical stress.

Abstract

The polymerization shrinkage (PS) and microhardness of dental composite resins, are known to be significantly influenced by the intensity of the curing light and the thickness of the material. However, the specific effect of high-power curing mode on composite resins has not been fully clarified. This study investigated the effect of the curing mode using high-power curing unit (VALO) on the volumetric shrinkage and microhardness of nanohybrid composites. SonicFill 3 and OptiShade were polymerized using standard and high-power curing modes with the VALO Cordless. A total of 60 specimens were prepared using Teflon molds with a diameter of 8 mm and a thicknesses of 2 mm and 4 mm. The microhardness values were measured using a Vickers hardness tester (Innovatest,Maastricht,Holland). Forty specimens were prepared for volumetric shrinkage ratios. PS was measured using a video imaging device (Acuvol Volumetric Shrinkage Analyzer; Bisco Inc., Schaumburg, IL, USA). The curing mode affected the microhardness of each composite material. Pertaining to microhardness of the nanohybrid composite materials, there were significant differences between thicknesses and light-curing modes (p<0.05). For the volumetric shrinkage, differences were measured between the materials based on the curing mode. High-power curing of a bulk-fill composite resulted in the lowest PS value. Increasing the layer thickness negatively affected the hardness of the composite resins.

Downloads

Download data is not yet available.

References

Meereis C.T.W., Münchow E.A., de Oliveira da Rosa W.L., da Silva A.F., Piva E. Polymerization shrinkage stress of resin-based dental materials: A systematic review and meta-analyses of composition strategies. J Mech Behav Biomed Mater. 2018; 82: 268-81.

Shah P.K., Stansbury J.W. Photopolymerization shrinkage-stress reduction in polymer-based dental restoratives by surface modification of fillers. Dent Mater. 2021; 37 (4): 578-87.

Watts D.C., Cash A. Determination of polymerization shrinkage kinetics in visible-light-cured materials: methods development. Dental Materials. 1991; 7 (4): 281-7.

Fanfoni L., De Biasi M., Antollovich G., Di Lenarda R., Angerame D. Evaluation of degree of conversion, rate of cure, microhardness, depth of cure, and contraction stress of new nanohybrid composites containing pre-polymerized spherical filler. J Mater Sci Mater Med. 2020; 31 (12): 127.

Aung S.Z., Takagaki T., Ikeda M., Nozaki K., Burrow M.F., Abdou A., et al. The effect of different light curing units on Vickers microhardness and degree of conversion of flowable resin composites. Dent Mater J. 2021; 40 (1): 44-51.

Ilie N., Stark K. Curing behaviour of high-viscosity bulk-fill composites. J Dent. 2014; 42 (8): 977-85.

Ferracane J.L. Resin composite-state of the art. Dental materials. 2011; 27 (1): 29-38.

Yu P., Xu Y.X., Liu Y.S. Polymerization shrinkage and shrinkage stress of bulk-fill and non-bulk-fill resin-based composites. J Dent Sci. 2022; 17 (3): 1212-6.

Lima R.B.W., Troconis C.C.M., Moreno M.B.P., Murillo-Gómez F., De Goes M.F. Depth of cure of bulk fill resin composites: A systematic review. J Esthet Restor Dent. 2018; 30 (6): 492-501.

Jakupović S., Pervan N., Mešić E., Gavranović-Glamoč A., Bajsman A., Muratović E., et al. Assessment of Microhardness of Conventional and Bulk-Fill Resin Composites Using Different Light-Curing Intensity. Polymers (Basel). 2023; 15 (10).

Rizzante F.A.P., Duque J.A., Duarte M.A.H., Mondelli R.F.L., Mendonça G., Ishikiriama S.K. Polymerization shrinkage, microhardness and depth of cure of bulk fill resin composites. Dent Mater J. 2019; 38 (3): 403-10.

Karacolak G., Turkun L.S., Boyacioglu H., Ferracane J.L. Influence of increment thickness on radiant energy and microhardness of bulk-fill resin composites. Dent Mater J. 2018; 37 (2): 206-13.

Yu P., Yap A., Wang X.Y. Degree of Conversion and Polymerization Shrinkage of Bulk-Fill Resin-Based Composites. Oper Dent. 2017; 42 (1): 82-9.

Czasch P., Ilie N. In vitro comparison of mechanical properties and degree of cure of bulk fill composites. Clin Oral Investig. 2013; 17 (1): 227-35.

Jang J.H., Park S.H., Hwang I.N. Polymerization shrinkage and depth of cure of bulk-fill resin composites and highly filled flowable resin. Oper Dent. 2015; 40 (2): 172-80.

Yang Y., Lei H., Liu Y., Xia B. Clinical evaluation of SonicFill bulk resin technique in the restoration of proximal deep caries of primary molars: a two-year randomized controlled trial. BMC Oral Health. 2024; 24 (1): 1461.

Kerr Dental. Optishade™ Technical Bulletin. Kerr Corporation; Orange, CA, USA; 2023.

Ilie N., Moldovan M., Ionescu A.C. Microstructure and Mechanical Behavior of Modern Universal-Chromatic and Bulk-Fill Resin-Based Composites Developed to Simplify Dental Restorative Procedures. J Funct Biomater. 2022;13 (4).

van Dijken J.W. Durability of resin composite restorations in high C-factor cavities: a 12-year follow-up. J Dent. 2010; 38 (6): 469-74.

Peutzfeldt A., Asmussen E. Resin composite properties and energy density of light cure. J Dent Res. 2005; 84 (7): 659-62.

Leprince J.G., Palin W.M., Hadis M.A., Devaux J., Leloup G. Progress in dimethacrylate-based dental composite technology and curing efficiency. Dent Mater. 2013; 29 (2): 139-56.

Leprince J.G., Lamblin G., Devaux J., Dewaele M., Mestdagh M., Palin W.M., et al. Irradiation modes' impact on radical entrapment in photoactive resins. J Dent Res. 2010; 89 (12): 1494-8.

Par M., Marovic D., Attin T., Tarle Z., Tauböck T.T. The effect of rapid high-intensity light-curing on micromechanical properties of bulk-fill and conventional resin composites. Sci Rep. 2020;10 (1):10560.

Price R.B., Ferracane J.L., Hickel R., Sullivan B. The light-curing unit: An essential piece of dental equipment. Int Dent J. 2020; 70 (6): 407-17.

Ersen K.A., Gürbüz Ö., Özcan M. Evaluation of polymerization shrinkage of bulk-fill resin composites using microcomputed tomography. Clin Oral Investig. 2020; 24 (5): 1687-93.

Marx P., Wiesbrock F. Expanding Monomers as Anti-Shrinkage Additives. Polymers (Basel). 2021; 13 (5).

Tiba A., Charlton D.G., Vandewalle K.S., Ragain J.C., Jr. Comparison of two video-imaging instruments for measuring volumetric shrinkage of dental resin composites. J Dent. 2005; 33 (9): 757-63.

Nie J., Yap A.U., Wang X.Y. Influence of Shrinkage and Viscosity of Flowable Composite Liners on Cervical Microleakage of Class II Restorations: A Micro-CT Analysis. Oper Dent. 2018; 43 (6): 656-64.

Atria P.J., Sampaio C.S., Cáceres E., Fernández J., Reis A.F., Giannini M., 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 (1): 33-9.

Papadogiannis D., Tolidis K., Gerasimou P., Lakes R., Papadogiannis Y. Viscoelastic properties, creep behavior and degree of conversion of bulk fill composite resins. Dent Mater. 2015; 31 (12): 1533-41.

Ilie N., Stark K. Curing behaviour of high-viscosity bulk-fill composites. Journal of dentistry. 2014; 42 (8): 977-85.

Alsahafi T.A., Walter R., Nunes M., Sulaiman T.A. Wear of Bulk-fill Composite Resins After Thermo-mechanical Loading. Oper Dent. 2023; 48 (4): 416-24.

Jeong T.S., Kang H.S., Kim S.K., Kim S., Kim H.I., Kwon Y.H. The effect of resin shades on microhardness, polymerization shrinkage, and color change of dental composite resins. Dent Mater J. 2009; 28 (4): 438-45.

Tarle Z., Attin T., Marovic D., Andermatt L., Ristic M., Tauböck T.T. Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites. Clin Oral Investig. 2015; 19 (4): 831-40.

Bucuta S., Ilie N. Light transmittance and micro-mechanical properties of bulk fill vs. conventional resin based composites. Clin Oral Investig. 2014; 18 (8): 1991-2000.

Garcia D., Yaman P., Dennison J., Neiva G. Polymerization shrinkage and depth of cure of bulk fill flowable composite resins. Oper Dent. 2014; 39 (4): 441-8.

Torres C.R.G., Prado T.P., Ávila D., Pucci C.R., Borges A.B. Influence of Light-Curing Time and Increment Thickness on the Properties of Bulk Fill Composite Resins With Distinct Application Systems. Int J Dent. 2024; 2024: 2123406.

Santini A., Miletic V., Swift M.D., Bradley M. Degree of conversion and microhardness of TPO-containing resin-based composites cured by polywave and monowave LED units. J Dent. 2012; 40 (7): 577-84.

Varshney I., Jha P., Nikhil V. Effect of monowave and polywave light curing on the degree of conversion and microhardness of composites with different photoinitiators: An in vitro study. J Conserv Dent. 2022; 25 (6): 661-5.

Gonulol N., Ozer S., Tunc E.S. Effect of a third-generation LED LCU on microhardness of tooth-colored restorative materials. Int J Paediatr Dent. 2016; 26 (5): 376-82.

Ilie N., Stark K. Effect of different curing protocols on the mechanical properties of low-viscosity bulk-fill composites. Clin Oral Investig. 2015; 19 (2): 271-9.