Odovtos - International Journal of Dental Sciences ISSN Impreso: 1659-1046 ISSN electrónico: 2215-3411

OAI: https://revistas.ucr.ac.cr/index.php/Odontos/oai
The Effect of Curing Modes and Times of Third-Generation Led LCU on the Mechanical Properties of Nanocomposites
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Keywords

LED; Nanocomposite; Microhardness; Flexural performance; Curing modes; Curing times.
LED; Nanocompuesto; Microdureza; Flexión; Fotocurado.

How to Cite

Oglakci, B., Enginler Özlen, R. H., Demirkol, M., Özduman, Z. C., Kucukyildirim, B. O., & Eliguzeloglu Dalkilic, E. (2022). The Effect of Curing Modes and Times of Third-Generation Led LCU on the Mechanical Properties of Nanocomposites. Odovtos - International Journal of Dental Sciences, 24(3), 61–74. https://doi.org/10.15517/ijds.2022.49836

Abstract

This study evaluates the effect of curing modes and times on the mechanical properties of nanocomposites. Two nanocomposite resins were investigated: supra-nanohybrid (Estelite Posterior Quick; EP) and nanohybrid (Solare X; SX). They were polymerized with a light-emitting diode light-curing units (LED LCU, Valo) as follows: standard mode for 20s (ST20), high power mode for 12s (HP12), high power mode for 20s (HP20), extra power mode for 6s (XP6), and extra power mode for 20s (XP20). For Vickers microhardness (HV), disc-shaped specimens were fabricated (n=10). For the three-point bending test, bar-shaped specimens were fabricated (n=10). Flexural strength and resilience modulus were calculated. The fractured surfaces and specimen surfaces of composites were observed using scanning electron microscopy. The data were analyzed with repeated measures ANOVA, two-way variance, and Bonferroni tests (p<0.05). On the top and bottom surfaces of the EP nanocomposite resin, ST20 and HP12 revealed statistically higher HV than with XP6. Moreover, HP20 and XP20 had statistically higher HV than HP12 and XP6. For the SX nanocomposite resin, HP20 had statistically higher HV than HP12. For EP and SX, there were no significant differences in flexural strength and resilience modulus regarding the curing modes and times. Furthermore, SX demonstrated lower mechanical properties than EP. Scanning electron microscopy indicated that both nanocomposites had similar surface appearances. However, with all curing modes and times, SX exhibited layered fractures and more crack formations than EP. Different curing modes and times could influence the microhardness of nanocomposites.

https://doi.org/10.15517/ijds.2022.49836
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References

Demarco F.F., Corrêa M.B., Cenci M.S., Moraes R.R., Opdam N.J. Longevity of posterior composite restorations: not only a matter of materials. Dent Mater. 2012; 28 (1): 87-101.

Subrahami K., Ahmed W. Emerging nanotechnologies in dentistry-materials, processes and applications Waltham (MA): Elsevier Inc. 2012.

Jandt K.D., Mills R.W. A brief history of LED photopolymerization. Dent Mater. 2013; 29 (6) 605-617.

Jakubiak J., Allonas X., Fouassier J., Sionkowska A., Andrzejewska E., Linden L. Camphorquinone-amines photoinitating systems for the initiation of free radical polymerization. Polymer 2003; 44 (8): 5219-5226.

Randolph L.D., Palin W.M., Bebelman S., Devaux J., Gallez B., Leloup G. Ultra-fast light-curing resin composite with increased conversion and reduced monomer elution. Dent Mater 2014; 30 (5): 594-604.

Platt JA, Price RB. Light curing explored in Halifax. Oper Dent 2014; 39 (6):561-563.

Feng L., Suh BI. Exposure reciprocity law in photopolymerization of multi-functional acrylates and methacrylates. Macromol Chem Phys 2007; 208 (3): 295-306.

Peutzfeldt A., Lussi A., Flury S. Effect of High-Irradiance Light-Curing on Micromechanical Properties of Resin Cements.

Biomed Res Int. 2016; 4894653. doi: 10.1155/2016/4894653

Ilie N, Kreppel I, Durner J. Effect of radical amplified photopolymerization (RAP) in resin-based composites. Clin Oral Investig. 2014; 18 (4): 1081-1088.

Shibasaki S., Takamizawa T., Nojiri K., Imai A., Tsujimoto A., Endo H., et al. Polymerization Behavior and Mechanical Properties of High-Viscosity Bulk Fill and Low Shrinkage Resin Composites. Oper Dent. 2017; 42 (6): E177-E187. doi: 10.2341/16-385-L

Gan J.K., Yap A.U., Cheong J.W., Arista N., Tan C.B.K. Bulk-Fill Composites: Effectiveness of Cure With Poly- and Monowave Curing Lights and Modes. Oper Dent. 2018; 43 (2): 136-143. doi: 10.2341/16-304-L

Yap A.U.J., Seneviratne C. Influence of light energy density on effectiveness of composite cure. Oper Dent. 2001; 26 (5): 460-6.

Özduman Z.C., Kazak M., Fildişi M.A., Özlen R.H., Dalkilic E., Donmez N. Effect of Polymerization Time and Home Bleaching Agent on the Microhardness and Surface Roughness of Bulk-Fill Composites: A Scanning Electron Microscopy Study, Scanning 2019.:2307305. doi: 10.1155/2019/2307305

ISO-Standards 2009. ISO 4049 Dentistry-Polymer-Based Restorative Materials Geneve: International Organization for Standardization.

Askeland DR. The Science and Engineering of Materials, Springer Science+Business Media, New York. 1996 Online ISBN: 978-1-4899-2895-5 https://doi.org/10.1007/978-1-4899-2895-5

Yap A.U.J., Seneviratne C. Influence of light energy density on effectiveness of composite cure. Oper Dent. 2001; 26 (5): 460-6

Peutzfeldt A., Asmussen E. Resin Composite Properties and Energy Density of Light Cure. J Dent Res. 2005; 84 (7): 659-62.

Price R.B.T., Felix C.A., Andreou P. Effects of resin composite composition and irradiation distance on the performance of curing lights. Biomaterials 2004; 25 (18): 4465-4477, 2004.

Rueggeberg F.A., Giannini M., Arrais C.A.G., Price R.B.T. Light curing in dentistry and clinical implications: a literature review. Braz Oral Res. 2017; 31 (Supplement 1) e61.

Borges B.C.D., Groninger A.I.S., Soares G.P., Santos-Daroz C.B.D., Ambrosano G.M.B., Marchi GM. Curing quality of composites as influenced by the filler content, light source and curing time. Dentistry 2012; 1 (1): 103.

Price R.B.T. Light curing in dentistry. Dent Clin N Am. 2017; 61 (4): 751-778.

Bouschlicher M.R., Rueggeberg F.A., Wilson B.M. Correlation of bottom-to-top surface microhardness and conversion ratios for a variety of resin composite compositions. Oper Dent. 2004; 29 (6): 698-704.

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

Lima A.F., de Andrade K.M.G., da Cruz Alves L.E., Sores G.P., Marchi G.M., Aguiar F.H.B. Influence of light source and extended time of curing on microhardness and degree of conversion of different regions of a nanofilled composite resin. Eur J Dent. 2012; 6 (2): 153-157.

Kim K.H., Ong J.L., Okuno O. The effect of filler loading and morophology on the mechanical properties of contemporary composites. J Prosthet Dent. 2002; 87 (6): 642-94.

Heintze S.D., Zimmerli B. Relevance of in vitro tests of adhesive and composite dental materials, a review in 3 parts. Part 1: approval requirements and standardized testing of composite materials according to ISO specifications. Schweiz Monatsschr Zahnmed 2011; 121(9): 804-816

Goracci C., Cadenaro M., Fontanive L., Giangrosso G., Juloski J., Vichi A. Polymerization efficiency and flexural strength of low-stress restorative composites. Dent Mater. 2014; 30 (6): 688-694.

Chung S.M., Yap A.U.J., Chandra S.P., Lim CT. Flexural Strength of Dental Composite Restoratives: Comparison of Biaxial and Three-Point Bending Test. J Biomed Mater Res. 2004; 71(2): 278-83.

Par M., Tarle Z., Hickel R., Ilie N. Mechanical properties of experimental composites containing bioactive glass after artificial aging in water and ethanol. Clin Oral Investig. 2019; 23(6): 2733-2741. doi: 10.1007/s00784-018-2713-6. Epub 2018 Oct 25.

Salazar D.C., Dennison J., Yaman P. Inorganic and prepolymerized filler analysis of four resin composites. Oper Dent. 2013; 38 (6): E201-209. doi: 10.2341/12-474-L

Boussèsa Y., Brulat-Bouchardb N., Boucharda P.O., Abouelleilc H. & Tilliera Y. (2020) Theoretical prediction of dental composites yield stress and flexural modulus based on filler volume ratio Dental Materials 36 (1) 97-107. doi: 10.1016/j.dental.2019.10.012

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