Effect of Photoinitiator Type and Photoactivation Condition on the Physical-Mechanical Properties of Orthodontic Resins

Authors

  • Priscila Maito Roseira MSc, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba - PR, Brazil
  • Camila de Siqueira Gomes MSc, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba - PR, Brazil
  • Francielle Topolski PhD, Professor, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba - PR, Brazil https://orcid.org/0000-0003-4557-553X
  • Carla Castiglia Gonzaga PhD, Professor, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba - PR, Brazil https://orcid.org/0000-0001-6374-1605
  • Alexandre Moro PhD, Professor, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil. Associate Professor, Department of Orthodontics, Universidade Federal do Paraná, Curitiba - PR, Brazil
  • Roberta Caroline Bruschi Alonso PhD, Professor, Department of Restorative Dentistry, Universidade Metropolitana de Santos, Santos -SP, Brazil
  • Gisele Maria Correr Nolasco PhD, Professor, School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba - PR, Brazil. Adjunct Professor, Department of Restorative Dentistry, Universidade Federal do Paraná, Curitiba - PR Brazil

DOI:

https://doi.org/10.21270/archi.v11i1.5589

Keywords:

Orthodontics, Composite Resins, Dental Photoinitiators, Dental Curing Lights

Abstract

Purpose: The aim of this study was to evaluate the physical-mechanical properties of experimental orthodontic resins, containing different photoinitiators systems and photoactivated through a ceramic bracket, using a high irradiance and wide spectrum light emitting diode curing unit. Methods: Experimental resin composites (50:50 BisGMA/TEGDMA: 60% feldspar silanized particles) were formulated with different photoinitiators according to the following groups: phenylpropaneamine + amine DMAEMA (PPD), camphorquinone + amine DMAEMA (CQ) or bisacylphosphinic oxide (BAPO). A commercial orthodontic resin composite (Transbond XT) was used as control. The materials were then distributed into two groups, according to the photoactivation condition: directly or through a ceramic bracket, for 20s at 1200 mW/cm2. In the sequence, fifteen composite disks, 5mm of diameter and 1mm of thickness, were made for each of the eight groups. The degree of conversion (DC) was determined by means of Raman spectroscopy. Knoop hardness (KHN) was measured immediately after confection and after 24 hours of storage in 100% ethanol for indirect crosslink density (CLD) evaluation. Data were analyzed using two-way ANOVA followed by Tukey's test (α = 0.05). Results: The DC of the BAPO composite was significantly higher in comparison to the other materials, regardless of the photoactivation condition. The KHN was significantly different between the composite groups in the following sequence: BAPO> Transbond XT> CQ> PPD. The direct photoactivation presented higher KHN values, regardless the type of material. Regarding the CLD, there was statistical difference only for the material factor, as follow: PPD> BAPO = CQ = Transbond XT. Conclusion: The photoinitiator type and the photoactivation condition had a significant influence on the physical-mechanical properties of the evaluated materials.

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References

Hedayati Z, Farjood A. Evaluation of microleakage under orthodontic brackets bonded with nanocomposites. Contemp Clin Dent. 2018;9(3):361-6.

Alvim HH, Alecio AC, Vasconcellos WA, Furlan M, de Oliveira JE, Saad JR. Analysis of camphorquinone in composite resins as a function of shade. Dental Materials. 2007;23(10):1245-9.

Delgado AJ, Castellanos EM, Sinhoreti M, Oliveira DC, Abdulhameed N, Geraldeli S, Sulaiman TA, Roulet JF. The use of different photoinitiator systems in photopolymerizing resin cements through ceramic veneers. Oper Dent. 2019;44(4):396-404.

Pratap B, Gupta RK, Shekhawat DS, Yadav A, Chaabra D, Nag M. Physical and mechanical characterization of nanoalumina filled resin based dental composites. Materials Today. 2020;28(4):2171-3.

Sim JS, Seol HJ, Park JK, Garcia-Godoy F, Kim HI, Kwon YH. Interaction of LED light with coinitiator-containing composite resins: effects of dual-peaks. J Dent. 2012;40(10):836-42.

Lee DS, Jeong TS, Kim S, Hyung-Il Kim HI, Kwon YH. Effect of dual-peak LED unit on the polymerization of coinitiator-containing composite resins. Dent Mater J. 2012;31(4):656-61.

Favarão J, Oliveira DCRS, Zanini MM, Rocha MG, Correr-Sobrinho L, Sinhoreti MAC. Effect of curing-light attenuation on color stability and physical and chemical properties of resin cements containing different photoinitiators. J. Mech. Behav. Biomed. Mater. 2021;113.

Çörekçi B, Malkoç S, Öztürk B, Gündüz B, Toy E. Polymerization capacity of orthodontic composites analyzed by Fourier transform infrared spectroscopy. Am J Orthod Dentofacial Orthop. 2011;139(4):299-304.

Çörekçi B, Irgin C, Halicioglu K, Dursun S, Yavuz MZ. Effects of plasma-emulating light-emitting diode (LED) versus conventional LED on cytotoxic effects and polymerization capacity of orthodontic composites. Hum Exp Toxicol. 2014;33(10):1000-7.

Amato PAF, Martins RP, Cruz, CAS, Capella MV, Martins LP. Time reduction of light curing: Influence on conversion degree and microhardness of orthodontic composites. Am J Orthod Dentofacial Orthop. 2014;146(1):40-5.

Sostena MDS, Nogueira RA, Grandini CR, Moraes JCS. Glass transition and degree of conversion of light cured orthodontic composite. J Appl Oral Sci. 2009;17(6):570-3.

Uzunova Y, Lukanov L, Tsanova PV, Filipov I. Spectroscopic, chromatographic and morphological study of photopolymerized dental composites. Digest Journal of Nanomaterials and Biostructures. 2012;7(4):1825-32.

Giorgi MCC, Lima DANL, Marchi GM, Ambrosano GM, Aguiar FHB. Influence of softening test and light‑activation protocols on resin composite polymer structure. Eur Journal Dent. 2014;8(1):9-14.

Purushothaman D, Kailasam V, Chitharanjan AB. Bisphenol A release from orthodontic adhesives and its correlation with the degree of conversion. Am Journal Orthod Dentofacial Orthop. 2015;147(1):29-36.

Brandt WC, Schneider LFJ, Frollini E, Correr-Sobrinho L, Sinhoreti MAC. Effect of different photo-initiators and light curing units on degree of conversion of composites. Braz Oral Res. 2010;24(3):263-70.

Salgado VE, Albuquerque PP, Cavalcante LM, Pfeifer CS, Moraes RR, Schneider LF. Influence of photoinitiator system and nanofiller size on the optical properties and cure efficiency of model composites. Dent Mater. 2014;30(10):e264-71.

Santini A, McGuinness N, Nor NA. Degree of conversion of resin-based orthodontic bonding materials cured with single-wave or dual-wave LED light-curing units. J Orthod. 2014; 41(4):292-8.

Hass V, Luque-Martinez I, Sabino NB, Loguercio AD, Reis A. Prolonged exposure times of one-step self-etch adhesives on adhesive properties and durability of dentine bonds. J Dent. 2012;40(12):1090-102.

Ogunyinka A, Palin WM, Shortall AC, Marquis PM. Photoinitiation chemistry affects light transmission and degree of conversion of curing experimental dental resin composites. Dent Mater. 2007;23(7):807-13.

Schneider LF, Cavalcante LM, Consani S, Ferracane JL. Effect of co-initiator ratio on the polymer properties of experimental resin composites formulated with camphorquinone and phenyl-propanedione. Dent Mater. 2009;25(3):369-75.

Brandt WC, Tomaselli LO, Correr-Sobrinho L, Sinhoreti MAC. Can phenyl-propanedione influence Knoop hardness, rate of polymerization and bond strength of resin composite restorations? J Dent. 2011;39(6): 438-47.

Flury S, Lussi A, Hickel R, Ilie N. Light curing through glass ceramics with a second-and a third-generation LED curing unit: effect of curing mode on the degree of conversion of dual-curing resin cements. Clin Oral Invest. 2013;17:2127-37.

Manojlovic D, Dramićanin MD, Lezaja M, Pongprueksa P, Van Meerbeek B, Miletic V. Effect of resin and photoinitiator on color, translucency and color stability of conventional and low-shrinkage model composites. Dent Mater. 2016;32(2):183-91.

de Oliveira DC, Rocha MG, Gatti A, Correr AB, Ferracane JL, Sinhoreti MAC. Effect of different photoinitiators and reducing agents on cure efficiency and color stability of resin-based composites using different LED wavelengths. J Dent. 2015;43(12):1565-72.

Salgado VE, Borba MM, Cavalcante LM, Moraes RR, Schneider LF. Effect of photoinitiator combinations on hardness, depth of cure, and color of model resin composites. J Esthet Restor Dent. 2015;27(S1):S41-8.

Neumann MG, Miranda WG, Schmitt CC, Rueggeberg FA, Corrêa IC. Molar extinction coefficients and the photon absorption efficiency of dental photoinitiators and light curing units. J Dent. 2005;33:525-32.

Sun JG, Chae KH. Properties of 2-3-butanedione and 1-phenyl-1,2-propanedione as new photosensitizers for visible light cured dental resin composites. Polymer. 2000; 41:6205-12.

Lima CDR, da Silva DB, Vitti RP, Miranda ME, Brandt WC. Mechanical properties of experimental resin cements containing different photoinitiators and co-initiators. Clin Cosmet Investig Dent. 2019;11:285-90.

Ikemura K, Endo T. A review of the development of radical photopolymerization initiators used for designing light-curing dental adhesives and resin composites. Dent Mater J. 2010;29(5):481-501.

Oliveira DCRS, Souza-Junior EJ, Dobson A, Correr ARC, Brandt WC, Sinhoreti MAC. Evaluation of phenyl-propanedione on yellowing and chemical-mechanical properties of experimental dental resin-based materials. J Appl Oral Sci. 2016;24(6):555-60.

Segreto DR, Naufel FS, Brandt WC, Guiraldo RD, Correr-Sobrinho L, Sinhoreti MA. Influence of photoinitiator and light-curing source on bond strength of experimental resin cements to dentin. Braz Dent J. 2016;27(1):83-9.

Schneider LF, Pfeifer CS, Consani S, Prahl SA, Ferracane JL. Influence of photoinitiator type on the rate of polymerization, degree of conversion, hardness and yellowing of dental resin composites. Dent Mater. 2008;24(9):1169-77.

Bolaños-Carmona V, Zein B, Menendéz-Núñez M, Sánchez-Sánchez P, Ceballos-García L, Gonzáles-Lopez S. Influence of the bracket on bonding and physical behavior of orthodontic resin cements. Dent Mater J. 2015;34(4):449-57.

Published

2022-02-02

How to Cite

Roseira, P. M., Gomes, C. de S., Topolski, F., Gonzaga, C. C., Moro, A., Alonso, R. C. B. ., & Nolasco, G. M. C. (2022). Effect of Photoinitiator Type and Photoactivation Condition on the Physical-Mechanical Properties of Orthodontic Resins. ARCHIVES OF HEALTH INVESTIGATION, 11(1), 160–166. https://doi.org/10.21270/archi.v11i1.5589

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Original Articles