Keywords
dental materials
hardness test
preheated resin
surface hardness
surface microhardness
dentistry
How to Cite
Abstract
Background: Preheating resins has been shown to improve physical properties such as surface microhardness. Some low-cost composite resins have not been well studied and preheating could improve their properties. Objective: to evaluate if preheating increases the surface microhardness of 6 composite resins and if the microhardness of the preheated low-cost ones equals that of the other resins Method: In this In vitro experimental investigation, 6 resins were used, EnaHri®UE2 and UD2 (Micerium, Genoa Italy) as control, Z350TM and Z250TM (3M ESPE, Minnesota United States) conventionally used composites and LUNA ® and ROK ® (SDI, Victoria Australia) as low-cost resins. Specimens without preheating (sp) and preheating at 39°C (p) were created for each resin. It was polymerized according to the manufacturers' instructions. Three measurements were made per sample using a microhardness tester applying a 300 g load for 10 seconds. Results: Resin-enamel microhardness: LUNA ® sp 69.93 HV (95 % CI 62.02-77.85), Z350TM sp 89.9 HV (95 % CI 80.56-99.23), LUNA ® p 70.05 HV (95 % CI 62.97-77.12), Z350TM p 87.47 HV (CI 95 % 78.71-96.23). The microhardness of resins-dentin: ROK ® sp 85.16 HV (95 % CI 69.91-100.4), Z250TM sp 95.99 HV (95 % CI 74.8-117.2), ROK ® p 92.19 HV (95 % CI 80.83-103.6), Z250TM p 104.7 HV (95 % CI 97.76-111.6). Preheating did not significantly increase microhardness except for control resins. ROK ® sp is equivalent to Z250TM sp (p 0.2825). Conclusion: Preheating does not increase the surface microhardness of the composite resins analyzed. The microhardness of ROK ® sp resin is equivalent to Z350TM sp.
Haque N, Yousaf S, Nejatian T, Youseffi M, Mozafari M, Sefat F. Dental amalgam. In Advanced Dental Biomaterials 2019 Jan 1; 105-125. Woodhead Publishing. https://doi.org/10.1016/B978-0-08-102476-8.00006-2
Khosravani MR. Mechanical behavior of restorative dental composites under various loading conditions. J Mech Behav Biomed Mater. 2019 May (93): 151-157. https://doi.org/10.1016/j.jmbbm.2019.02.009
Asamblea de las Naciones Unidas para el Medio Ambiente. Convenio de Minamata sobre el Mercurio. Artículo 4. Productos con mercurio añadido. Septiembre de 2017.
Moraschini V, Fai CK, Alto RM, Dos Santos GO. Amalgam and resin composite longevity of posterior restorations: A systematic review and meta-analysis. J Dent. 2015 Sep; 43(9): 1043-1050. https://doi.org/10.1016/j.jdent.2015.06.005
Beck F, Lettner S, Graf A, Bitriol B, Dumitrescu N, Bauer P, Moritz A, Schedle A. Survival of direct resin restorations in posterior teeth within a 19-year period (1996–2015): A meta-analysis of prospective studies. Dent Maters. 2015 Aug; 31(8): 958-985. https://doi.org/10.1016/j.dental.2015.05.004
ASTM International. ASTM E384-22 Standard test method for microindentation hardness of materials. West Conshohocken, PA ASTM International; 2022. https://doi.org/10.1520/E0384-22
ASTM International ASTM E92-17: Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials. West Conshohocken, PA ASTM International; 2017. https://doi.org/10.1520/E0092-17
William DC. Fundamentals of materials science and engineering: an interactive. John Wiley & Sons; 2001.
Muñoz CA, Bond PR, Sy-Muñoz 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 Aug; 21(4): 215-22.
Elkaffass AA, Eltoukhy RI, Elnegoly SA, Mahmoud SH. Influence of preheating on mechanical and surface properties of nanofilled resin composites. J Clin Exp Dent. 2020 May 1; 12(5): e494-e500. https://doi.org/10.4317/jced.56469
Bausch JR, de Lange C, Davidson CL. The influence of temperature on some physical properties of dental composites. J Oral Rehabil. 1981 Jun; 8(4): 309-317. https://doi.org/10.1111/j.1365-2842.1981.tb00505.x
Patussi AFC, Ramacciato JC, da Silva JGR, Nascimento VRP, Campos DES, de Araújo Ferreira Munizz I, de Souza GM, Lima RBW. Preheating of dental composite resins: A scoping review. J Esthet Restor Dent. 2023 Jun; 35(4): 646-656. https://doi.org/10.1111/jerd.12991
Magne P, Malta DA, Enciso R, Monteiro-Junior S. Heat Treatment Influences Monomer Conversion and Bond Strength of Indirect Composite Resin Restorations. J Adhes Dent. 2015 Dec; 17(6): 559-66. https://doi.org/10.3290/j.jad.a35258
Dionysopoulos D, Tolidis K, Gerasimou P, Koliniotou-Koumpia E. Effect of preheating on the film thickness of contemporary composite restorative materials. J Dent Sci. 2014 Dec; 9(4): 313-319. http://dx.doi.org/10.1016/j.jds.2014.03.006
Borges BC, Barreto AS, Gomes CL, Silva TR, Alves-Júnior C, Pinheiro IV, Braz R, Montes MA. Preheating of resin-based flowable materials in a microwave device: a promising approach to increasing hardness and softening resistance under cariogenic challenge. Eur J Esthet Dent. 2013 Winter; 8(4): 558-568
Elkaffas AA, Eltoukhy RI, Elnegoly SA, Mahmoud SH. The effect of preheating resin composites on surface hardness: a systematic review and meta-analysis. Restor Dent Endod. 2019 Oct 29; 44(4): e41. http://dx.doi.org/10.5395/rde.2019.44.e41
Theodoridis M, Dionysopoulos D, Koliniotou-Koumpia E, Dionysopoulos P, Gerasimou P. Effect of preheating and shade on surface microhardness of silorane-based composites. J Investig Clin Dent. 2017 May; 8(2). http://dx.doi.org/10.1111/jicd.12204
Daronch M, Rueggeberg FA, Hall G, De Goes MF. Effect of composite temperature on in vitro intrapulpal temperature rise. Dent Mater. 2007 Oct; 23(10): 1283-1288. http://dx.doi.org/10.1016/j.dental.2006.11.024
Rueggeberg FA, Daronch M, Browning WD, DE Goes MF. In vivo temperature measurement: tooth preparation and restoration with preheated resin composite. J Esthet Restor Dent. 2010 Oct; 22(5): 314-322. http://dx.doi.org/10.1111/j.1708-8240.2010.00358.x
D'Amario M, De Angelis F, Vadini M, Marchili N, Mummolo S, D'Arcangelo C. Influence of a repeated preheating procedure on mechanical properties of three resin composites. Oper Dent. 2015 Mar-Apr; 40(2): 181-189. http://dx.doi.org/10.2341/13-238-L
Grupo Micerium. Catálogo general. Perfil técnico del producto ENA HRI. 7 ed. Italia: Micerium; 2021. https://www.micerium.es/wp-content/uploads/2021/03/Catalogo-principal-2021_lq.pdf
Steel Dynamics. Instrucciones Luna SDI. Australia: SDI; 2021. https://www.sdi.com.au/pdfs/instructions/es-sa/luna_sdi_instructions_es-sa.pdf
Steel Dynamics. Folleto ROK SDI. Australia: SDI; 2003 https://www.sdi.com.au/pdfs/brochures/es-sp/rok_sdi_brochures_es-sp.pdf
3M ESPE: Perfil técnico Filtek Z250 ; St. Paul, MN: 3M ESPE; 1998 https://multimedia.3m.com/mws/media/292662O/perfil-tecnico-filtek-z250.pdf
3M ESPE. Perfil técnico Filtek Z350, St. Paul, MN: 3M ESPE; 2008. https://multimedia.3m.com/mws/media/348760O/filtek-z350-technical-profile-spanish.pdf
International Organization for Standarization ISO 4049:2019 Dentistry — Polymer-based restorative materials. Comité técnico ISO/TC 1067SC 1. 5ed; 2019
Alvarado Santillan GH, Huertas Mogollón GA. Resina precalentada como agente cementante: una revisión de tema. CES Odontol. 31 de diciembre de 2020; 33(2): 159-174. https://doi.org/10.21615/cesodon.33.2.14
National Center for Biotechnology Information. PubChem Compound Summary for CID 16387, 1,4-Butanediol dimethacrylate; 2022. https://pubchem.ncbi.nlm.nih.gov/compound/1_4-Butanediol-dimethacrylate.
Nada K, El-Mowafy O. Effect of precuring warming on mechanical properties of restorative composites. Int J Dent. 2011; 2011: 536212. https://doi.org/10.1155/2011/536212
Ayub KV, Santos GC Jr, Rizkalla AS, Bohay R, Pegoraro LF, Rubo JH, Santos MJ. Effect of preheating on microhardness and viscosity of 4 resin composites. J Can Dent Assoc. 2014; 80: e12
Deb S, Di Silvio L, Mackler HE, Millar BJ. Pre-warming of dental composites. Dent Mater. 2011 Apr; 27(4): e51-59. https://doi.org/10.1016/j.dental.2010.11.009
Mandal BM. Fundamentals of polymerization. Singapore. World Scientific; 2013
BAG D. Principles of Polymers: An Advanced Book. New York: Nova Science; 2013.
Lucey S, Lynch CD, Ray NJ, Burke FM, Hannigan A. Effect of pre-heating on the viscosity and microhardness of a resin composite. J Oral Rehabil. 2010 Apr; 37(4): 278-282. https://doi.org/10.1111/j.1365-2842.2009.02045.x
Fróes-Salgado NR, Silva LM, Kawano Y, Francci C, Reis A, Loguercio AD. Composite pre-heating: effects on marginal adaptation, degree of conversion and mechanical properties. Dent Mater. 2010 Sep; 26(9): 908-914. https://doi.org/10.1016/j.dental.2010.03.023
Rodríguez HA, Kriven WM, Casanova H. Development of mechanical properties in dental resin composite: Effect of filler size and filler aggregation state. Mater Sci Eng C Mater Biol Appl. 2019 Aug; 101: 274-282. https://doi.org/10.1016/j.msec.2019.03.090
Yadav RD, Raisingani D, Jindal D, Mathur R. A Comparative Analysis of Different Finishing and Polishing Devices on Nanofilled, Microfilled, and Hybrid Composite: A Scanning Electron Microscopy and Profilometric Study. Int J Clin Pediatr Dent. 2016 Jul-Sep; 9(3): 201-208. https://doi.org/10.5005/jp-journals-10005-1364
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