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CC BY 4.0 · Eur J Dent 2023; 17(04): 1065-1074
DOI: 10.1055/s-0042-1757908
Original Article

A Blinded Comparative Study of Four Commercially Available LEDs and a Laser Light Curing Device

John C. Comisi 
1   Department of Oral Rehabilitation, James B. Edwards College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
,
Cristiane Maucoski 
2   Department of Dental Clinical Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, Canada
,
Jonathan P. Beller
1   Department of Oral Rehabilitation, James B. Edwards College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
,
Kyle S. Dennis
1   Department of Oral Rehabilitation, James B. Edwards College of Dental Medicine, Medical University of South Carolina, Charleston, South Carolina, United States
,
Richard B. Price 
2   Department of Dental Clinical Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, Canada
› Author Affiliations Funding This study was supported with an SCTR - Biomedical Informatics Center (BMIC) grant support (NIH/NCATS UL1 TR001450). This study was supported by a travel grant provided by MITACS award IT26826 for C.M. and an internal research fund grant from the Faculty of Dentistry, Dalhousie University. The study was also financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001.(CAPES grant # 88881.622852/2021-01).
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Abstract

Objective This study determined the effectiveness of five light-curing units (LCUs; four light-emitting diode [LED] and one laser) used on different settings to photo-activate four conventional resin-based composites (RBCs).

Materials and Methods A total of 108 RBC specimens were photo-activated in a white Delrin mold representing a mesial-occlusal-distal (MOD) class II restoration in a molar tooth. The proximal boxes were 5 mm deep, and the mesial-distal length was 12 mm. Immediately after photo-curing, the RBC specimens were immersed in a solvent to remove the uncured materials, after which they were photographed and deidentified. A Research Electronic Data Capture survey was created using these images and sent to respondents who blindly assessed the ability of the various LCUs to photo-cure the MOD restorations.

Results There were significant differences in how the five curing lights had cured RBCs. One-way analysis of variance (ANOVA), pairwise t-test, Welch's one-way ANOVA, and Kruskal–Wallis rank test in the blinded survey data showed significant differences between the LED curing lights used for two 10-second cures and the laser curing light used for 1 second, and LED lights at lower settings.

Conclusion There was a significant difference in how the curing lights could photo-cure the RBCs used in this study. The laser curing light used for 1 second produced the worst results in all four RBCs.

Keywords

resin-based composites - dental curing lights - LED curing lights - laser curing light

Authors' Contributions

All authors took part in the study, manuscript preparation, and editing.


J.C.C.: Investigation, resources, formal analysis, data curation, writing- original draft, writing - reviewing and editing, and visualization.


J.P.B.: Investigation, formal analysis, data curation, data analysis and interpretation, and writing-reviewing and editing.


K.S.D.: Investigation, formal analysis, data curation, data analysis and interpretation, and writing-reviewing and editing.


C.M.: Methodology and investigation.


R.B.P.: Conceptualization, methodology, project administration, investigation, formal analysis, resources, writing the article, and writing-reviewing and editing.




Publication History

Article published online:
27 December 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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  • References

  • 1 Frazier K, Bedran-Russo AK, Lawson NC, Park J, Khajotia S, Urquhart O. Council on Scientific Affairs. Dental light-curing units: an American Dental Association Clinical Evaluators Panel survey. J Am Dent Assoc 2020; 151 (07) 544-545.e2
    CrossrefPubMedGoogle Scholar
  • 2 Price RB, Ferracane JL, Hickel R, Sullivan B. The light-curing unit: an essential piece of dental equipment. Int Dent J 2020; 70 (06) 407-417
    CrossrefPubMedGoogle Scholar
  • 3 Shortall AC, Hadis MA, Palin WM. On the inaccuracies of dental radiometers. PLoS One 2021; 16 (01) e0245830
    CrossrefPubMedGoogle Scholar
  • 4 Kopperud SE, Rukke HV, Kopperud HM, Bruzell EM. Light curing procedures - performance, knowledge level and safety awareness among dentists. J Dent 2017; 58: 67-73
    CrossrefPubMedGoogle Scholar
  • 5 Al-Senan D, Ageel F, Aldosari A, Maktabi H. Knowledge and attitude of dental clinicians towards light-curing units: a cross-sectional study. Int J Dent 2021; 2021: 5578274
    CrossrefPubMedGoogle Scholar
  • 6 Altaie A, Hadis MA, Wilson V. et al. An evaluation of the efficacy of LED light curing units in primary and secondary dental settings in the United Kingdom. Oper Dent 2021; 46 (03) 271-282
    CrossrefPubMedGoogle Scholar
  • 7 Bonsor SJ, Palin WM. ‘Let there be Light,’ and there was Light, but was it Enough? A review of modern dental light curing. Dent Update 2021; 48 (08) 633-640
    CrossrefGoogle Scholar
  • 8 Afshar MK, Eskandarizadeh A, Hasanabadi F, Torabi M. Evaluation of general dentists' knowledge about the function, safety, and infection control of the dental light-curing units in Kerman in 2017. Health Develop J 2021; 10 (03) 180-186
    Google Scholar
  • 9 Ernst CP, Price RB, Callaway A. et al. Visible light curing devices - irradiance and use in 302 German dental offices. J Adhes Dent 2018; 20 (01) 41-55
    CrossrefPubMedGoogle Scholar
  • 10 Bailey O, Vernazza CR, Stone S, Ternent L, Roche AG, Lynch C. Amalgam phase-down part 2: UK-based knowledge, opinions, and confidence in the alternatives. JDR Clin Trans Res 2022; 7 (01) 50-60
    PubMedGoogle Scholar
  • 11 Kojic DD, El-Mowafy O, Falenchuk O, Felix CJ, Mondelli RF, Bombonatti JF. Radiant-exposure attenuation through Class-2 proximal slots. Am J Dent 2021; 34 (02) 116-119
    PubMedGoogle Scholar
  • 12 Kojic DD, El-Mowafy O, Price R, El-Badrawy W. Efficacy of light-emitting diode light polymerization units used in private practices in Toronto, Ontario, Canada. J Am Dent Assoc 2019; 150 (09) 802-808
    CrossrefPubMedGoogle Scholar
  • 13 Rueggeberg FA, Giannini M, Arrais CAG, Price RBT. Light curing in dentistry and clinical implications: a literature review. Braz Oral Res 2017; 31 (Suppl. 01) e61
    CrossrefPubMedGoogle Scholar
  • 14 Rueggeberg FA. State-of-the-art: dental photocuring–a review. Review Dent Mater 2011; 27 (01) 39-52
    CrossrefPubMedGoogle Scholar
  • 15 Jandt KD, Mills RW. A brief history of LED photopolymerization. Dent Mater 2013; 29 (06) 605-617
    CrossrefPubMedGoogle Scholar
  • 16 Cadenaro M, Maravic T, Comba A. et al. The role of polymerization in adhesive dentistry. Dent Mater 2019; 35 (01) e1-e22
    CrossrefPubMedGoogle Scholar
  • 17 Maktabi H, Ibrahim MS, Balhaddad AA. et al. Improper light curing of bulkfill composite drives surface changes and increases S. mutans biofilm growth as a pathway for higher risk of recurrent caries around restorations. Dent J 2021; 9 (08) 83
    CrossrefPubMedGoogle Scholar
  • 18 Tagami A, Takahashi R, Nikaido T, Tagami J. The effect of curing conditions on the dentin bond strength of two dual-cure resin cements. J Prosthodont Res 2017; 61 (04) 412-418
    CrossrefPubMedGoogle Scholar
  • 19 Xu X, Sandras DA, Burgess JO. Shear bond strength with increasing light-guide distance from dentin. J Esthet Restor Dent 2006; 18 (01) 19-27 , discussion 28
    CrossrefPubMedGoogle Scholar
  • 20 Guo J, Holmes B, Yang B. et al. Determining the temporal development of dentin-composite bond strength during curing. Dent Mater 2016; 32 (08) 1007-1018
    CrossrefPubMedGoogle Scholar
  • 21 De Nys S, Putzeys E, Duca RC. et al. Long-term elution of bisphenol A from dental composites. Dent Mater 2021; 37 (10) 1561-1568
    CrossrefPubMedGoogle Scholar
  • 22 Fujioka-Kobayashi M, Miron RJ, Lussi A. et al. Effect of the degree of conversion of resin-based composites on cytotoxicity, cell attachment, and gene expression. Dent Mater 2019; 35 (08) 1173-1193
    CrossrefPubMedGoogle Scholar
  • 23 Monet Laser Curing Light AMD. The 1 second revolution. Accessed October 12, 2021, at: https://www.amdlasers.com/pages/monet-laser-curing-light-intro
    Google Scholar
  • 24 CMS. FlashMax2 Product description. CMS Dental. Accessed June 14, 2018, at: http://www.cmsdental.com/?id=415&c=Function%20Curing%20lights&ulang=2
    Google Scholar
  • 25 Powell GL, Blankenau RJ. Laser curing of dental materials. Dent Clin North Am 2000; 44 (04) 923-930
    CrossrefPubMedGoogle Scholar
  • 26 Kouros P, Dionysopoulos D, Deligianni A, Strakas D, Sfeikos T, Tolidis K. Evaluation of photopolymerization efficacy and temperature rise of a composite resin using a blue diode laser (445 nm). Eur J Oral Sci 2020; 128 (06) 535-541
    CrossrefPubMedGoogle Scholar
  • 27 Benetti AR, Havndrup-Pedersen C, Honoré D, Pedersen MK, Pallesen U. Bulk-fill resin composites: polymerization contraction, depth of cure, and gap formation. Oper Dent 2015; 40 (02) 190-200
    CrossrefPubMedGoogle Scholar
  • 28 Fronza BM, Rueggeberg FA, Braga RR. et al. Monomer conversion, microhardness, internal marginal adaptation, and shrinkage stress of bulk-fill resin composites. Dent Mater 2015; 31 (12) 1542-1551
    CrossrefPubMedGoogle Scholar
  • 29 Erickson RL, Barkmeier WW. Curing characteristics of a composite. part 2: the effect of curing configuration on depth and distribution of cure. Dent Mater 2014; 30 (06) e134-e145
    CrossrefPubMedGoogle Scholar
  • 30 Shimokawa C, Turbino ML, Giannini M, Braga RR, Price RB. Effect of curing light and exposure time on the polymerization of bulk-fill resin-based composites in molar teeth. Oper Dent 2020; 45 (03) E141-E155
    CrossrefPubMedGoogle Scholar
  • 31 Shimokawa CAK, Turbino ML, Giannini M, Braga RR, Price RB. Effect of light curing units on the polymerization of bulk fill resin-based composites. Dent Mater 2018; 34 (08) 1211-1221
    CrossrefPubMedGoogle Scholar
  • 32 ISO 4049 (2019) Dentistry Polymer-based filling, restorative materials. Geneva, Switzerland: International Standards Office; 2019: 27
    Google Scholar
  • 33 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
    CrossrefPubMedGoogle Scholar
  • 34 AlShaafi MM, AlQussier A, AlQahtani MQ, Price RB. Effect of mold type and diameter on the depth of cure of three resin-based composites. Oper Dent 2018; 43 (05) 520-529
    CrossrefPubMedGoogle Scholar
  • 35 Price RB, Rueggeberg FA, Harlow J, Sullivan B. Effect of mold type, diameter, and uncured composite removal method on depth of cure. Clin Oral Investig 2016; 20 (07) 1699-1707
    CrossrefPubMedGoogle Scholar
  • 36 Ash MM, Nelson SJ, Ash MM. Dental Anatomy, Physiology, and Occlusion. 8th ed.. Philadelphia: W.B. Saunders; 2003: xiv , 523 p., 16 p. of col. plates
    Google Scholar
  • 37 Lee JH, Prud'homme RK, Aksay IA. Cure depth in photopolymerization: experiments and theory. J Mater Res 2001; 16 (12) 3536-3544
    CrossrefGoogle Scholar
  • 38 de Cássia Romano B, Soto-Montero J, Rueggeberg FA, Giannini M. Effects of extending duration of exposure to curing light and different measurement methods on depth-of-cure analyses of conventional and bulk-fill composites. Eur J Oral Sci 2020; 128 (04) 336-344
    CrossrefPubMedGoogle Scholar
  • 39 Shimokawa CA, Turbino ML, Harlow JE, Price HL, Price RB. Light output from six battery operated dental curing lights. Mater Sci Eng C 2016; 69: 1036-1042
    CrossrefPubMedGoogle Scholar
  • 40 Harris PA, Taylor R, Thielke R, Payne J, Gonzalez N, Conde JG. Research electronic data capture (REDCap)–a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform 2009; 42 (02) 377-381
    CrossrefPubMedGoogle Scholar
  • 41 Harris PA, Taylor R, Minor BL. et al; REDCap Consortium. The REDCap consortium: building an international community of software platform partners. J Biomed Inform 2019; 95: 103208
    CrossrefPubMedGoogle Scholar
  • 42 Minamata Convention on Mercury. Accessed April 2014, at: http://www.mercuryconvention.org
  • 43 Federation FDIWD. FDI World Dental Federation. FDI policy statement on dental amalgam and the Minamata Convention on Mercury: adopted by the FDI General Assembly: 13 September 2014, New Delhi, India. Int Dent J 2014; 64 (06) 295-296
    CrossrefPubMedGoogle Scholar
  • 44 Durão MA, de Andrade AKM, do Prado AM. et al. Thirty-six-month clinical evaluation of posterior high-viscosity bulk-fill resin composite restorations in a high caries incidence population: interim results of a randomized clinical trial. Clin Oral Investig 2021; 25 (11) 6219-6237
    CrossrefPubMedGoogle Scholar
  • 45 Yazici AR, Kutuk ZB, Ergin E, Karahan S, Antonson SA. Six-year clinical evaluation of bulk-fill and nanofill resin composite restorations. Clin Oral Investig 2022; 26 (01) 417-426
    CrossrefPubMedGoogle Scholar
  • 46 Kunz PVM, Wambier LM, Kaizer MDR, Correr GM, Reis A, Gonzaga CC. Is the clinical performance of composite resin restorations in posterior teeth similar if restored with incremental or bulk-filling techniques? A systematic review and meta-analysis. Clin Oral Investig 2022; 26 (03) 2281-2297
    CrossrefPubMedGoogle Scholar
  • 47 Soto-Montero J, Giannini M, Sebold M. et al. Comparison of the operative time and presence of voids of incremental and bulk-filling techniques on Class II composite restorations. Quintessence Int 2022; 53 (03) 200-208
    PubMedGoogle Scholar
  • 48 Durner J, Schrickel K, Watts DC, Becker M, Draenert ME. Direct and indirect eluates from bulk fill resin-based-composites. Dent Mater 2022; 38 (03) 489-507
    CrossrefPubMedGoogle Scholar
  • 49 Sajnani AR, Hegde MN. Leaching of monomers from bulk-fill composites: an in vitro study. J Conserv Dent 2016; 19 (05) 482-486
    CrossrefPubMedGoogle Scholar
  • 50 Rocha MG, Maucoski C, Roulet JF, Price RB. Depth of cure of 10 resin-based composites light-activated using a laser diode, multi-peak, and single-peak light-emitting diode curing lights. J Dent 2022; 122: 104141
    CrossrefPubMedGoogle Scholar