Degree of conversion, translucency and intrinsic color stability of composites during surface modeling with lubricants

  • Ana Margarida dos Santos Melo
  • Thiago Jonathan Silva dos Santos
  • Matheus Dantas Tertulino
  • Maria Cristina dos Santos Medeiros
  • Ademir Oliveira da Silva
  • Boniek Castillo Dutra Borges


The tackiness presented by resins causes problems in performing the incremental technique, which can be improved by using lubricants in handling. Aim: To evaluate the influenceof two adhesive systems as brush lubricants on the degree of conversion, translucency and intrinsic color stability of composite resins. Methods: Samples (n=10) were fabricated according to the composites (Filtek Z350 XT, IPS Empress Direct, and Esthet X HD), shades (bleach shade and A2), and lubricants used (Adper Single Bond 2, Adper Scotchbond Multi-Purpose bonding agent, and no lubricant). Single composite increments were insertedinto a Teflon mold. The composite surface was then modeledusing a brush dipped in an adhesive system. The control group was fabricated with no additional modeling. The surface degree of conversion (DC) was measured using Fourier transform infrared spectroscopy; translucency and intrinsic color stability were accessed using a spectrophotometer. Data were analyzed using three-way ANOVA and the Tukey test (p<0.05). Results:Scotchbond Multi-Purpose decreased the DC of all composites and shades in comparison with the control group (p<0.05), although it did not decrease color stability (p<0.05). The bleach shade of IPS Empress Direct and Esthet X HD showed higher translucency than the A2 shade when lubricated with the adhesive systems (p<0.05).Conclusion: Therefore, the two tested adhesive systems used as brush lubricants on composites promoted changes to the surface degree of conversion and aesthetic properties.



1. Irawan BA, Irawan SN, Masudi SM, Sukminingrum N, Alam MK. 3D Surface Profile and Color Stability of Tooth Colored Filling Materials after Bleaching. Biomed Res Int. 2015;2015:327289. doi: 10.1155/2015/327289.
2. Krämer N, Reinelt C, Richter G, Petschelt A, Frankenberger R. Nanohybrid vs fine hybrid composite in Class II cavities: clinical results and margin analysis after four years. Dent Mater. 2009 Jun;25(6):750-9. doi: 10.1016/
3. Jiménez-Planas A, Martín J, Abalos C, Llamas R. Developments in polymerization lamps. Quintessence Int. 2008 Feb;39(2):e74-84.
4. Shin DH, Rawls HR. Degree of conversion and color stability of the light curing resin with new photoinitiator systems. Dent Mater. 2009 Aug;25(8):1030-8. doi: 10.1016/
5. Ogliari FA, Ely C, Zanchi CH, Fortes CB, Samuel SM, Demarco FF, et al. Influence of chain extender length of aromatic dimethacrylates on polymer network development. Dent Mater. 2008 Feb;24(2):165-71.
6. Dunn WJ, Strong TC. Effect of alcohol and unfilled resin in the incremental buildup of resin composite. Quintessence Int. 2007 Jan;38(1):e20-6.
7. Barcellos DC, Pucci CR, Torres CR, Goto EH, Inocencio AC. Effects of resinous monomers used in restorative dental modeling on the cohesive strength of composite resin. J Adhes Dent. 2008 Oct;10(5):351-4.
8. Perdigão J, Gomes G. Effect of instrument lubricant on the cohesive strength of a hybrid resin composite. Quintessence Int. 2006 Sep;37(8):621-5.
9. de Paula FC, Valentin Rde S, Borges BC, Medeiros MC, de Oliveira RF, da Silva AO. Effect of instrument lubricants on the surface degree of conversion and crosslinking density of nanocomposites. J Esthet Restor Dent. 2016 Mar-Apr;28(2):85-91. doi: 10.1111/jerd.12182.
10. Khalichi P, Singh J, Cvitkovitch DG, Santerre JP. The influence of triethylene glycol derived from dental composite resins on the regulation of Streptococcus mutans gene expression. Biomaterials. 2009 Feb;30(4):452-9. doi: 10.1016/j.biomaterials.2008.09.053.
11. Villarroel M, Fahl N, De Sousa AM, De Oliveira OB Jr. Direct esthetic restorations based on translucency and opacity of composite resins. J Esthet Restor Dent. 2011 Apr;23(2):73-87. doi: 10.1111/j.1708-8240.2010.00392.x.
12. Johnston WM. Color measurement in dentistry. J Dent. 2009;37 Suppl 1:e2-6. doi: 10.1016/j. jdent.2009.03.011.
13. Lee YK, Lim BS, Kim CW. Difference in the colour and colour change of dental resin composites by the background. J J Oral Rehabil. 2005 Mar;32(3):227-33.
14. da Silva EM, Poskus LT, Guimarães JG. Influence of light-polymerization modes on the degree of conversion and mechanical properties of resin composites: a comparative analysis between a hybrid and a nanofilled composite. Oper Dent. 2008 May-Jun;33(3):287-93. doi: 10.2341/07-81.
15. International Commission on Illumination. Recommendations on uniform color spaces, color difference equations, psychometric color terms. Paris: Bureau Central de la CIE; 1978.
16. Johnston WM, Ma T, Kienle BH. Translucency parameter of colorants for maxillofacial prostheses. Int J Prosthodont. 1995 Jan-Feb;8(1):79-86.
17. Peutzfeldt A. Resin composites in dentistry: the monomer systems. Eur J Oral Sci. 1997 Apr;105(2):97-116.
18. Cadenaro M, Breschi L, Antoniolli F, Navarra CO, Mazzoni A, Tay FR, et al. Degree of conversion of resin blends in relation to ethanol content and hydrophilicity. Dent Mater. 2008 Sep;24(9):1194-200. doi: 10.1016/
19. Gajewski VE, Pfeifer CS, Fróes-Salgado NR, Boaro LC, Braga RR. Monomers used in resin composites: degree of conversion, mechanical properties and water sorption/solubility. Braz Dent J. 2012;23(5):508-14.
20. Moraes LG, Rocha RS, Menegazzo LM, de Araújo EB, Yukimito K, Moraes JC. Infrared spectroscopy: a tool for determination of the degree of conversion in dental composites. J Appl Oral Sci. 2008 Mar- Apr;16(2):145-9.
21. Amirouche-Korichi A, Mouzali M, Watts DC. Effects of monomer ratios and highly radiopaque fillers on degree of conversion and shrinkage-strain of dental resin composites. Dent Mater. 2009 Nov;25(11):1411-8. doi: 10.1016/
22. Aguiar FH, Lazzari CR, Lima DA, Ambrosano GM, Lovadino JR. Effect of light curing tip distance and resin shade on microhardness of a hybrid resin composite. Braz Oral Res. 2005 Oct-Dec;19(4):302-6.
23. Janda R, Roulet JF, Kaminsky M, Steffin G, Latta M. Color stability of resin matrix restorative materials as a function of the method of light activation. Eur J Oral Sci. 2004 Jun;112(3):280-5.
24. Azzopardi N, Moharamzadeh K, Wood DJ, Martin N, van Noort R. Effect of resin matrix composition on the translucency of experimental dental composite resins. Dent Mater. 2009 Dec;25(12):1564-8. doi: 10.1016/
25. Lee YK. Influence of filler on the difference between the transmitted and reflected colors of experimental resin composites. Dent Mater. 2008 Sep;24(9):1243-7. doi: 10.1016/
26. Kim DH, Park SH. Evaluation of resin composite translucency by two different methods. Oper Dent. 2013 May-Jun;38(3):E1-15. doi: 10.2341/12-085-L.
27. Münchow EA, Sedrez-Porto JA, Piva E, Pereira-Cenci T, Cenci MS. Use of dental adhesives as modeler liquid of resin composites. Dent Mater. 2016 Apr;32(4):570-7. doi: 10.1016/
28. Ozakar Ilday N, Celik N, Bayindir YZ, Seven N. Effect of water storage on the translucency of silorane- based and dimethacrylate-based composite resins with fibres. J Dent. 2014 Jun;42(6):746-52.
doi: 10.1016/j.jdent.2014.02.002.
29. Dietschi D. Free-hand bonding in the esthetic treatment of anterior teeth: creating the illusion. J Esthet Dent. 1997;9(4):156-64. doi:
30. Sideridou ID, Karabela MM, Bikiaris DN. Aging studies of light cured dimethacrylate-based dental resins and a resin composite in water or ethanol/water. Dent Mater. 2007 Sep;23(9):1142-9.
How to Cite
MELO, Ana Margarida dos Santos et al. Degree of conversion, translucency and intrinsic color stability of composites during surface modeling with lubricants. Brazilian Journal of Oral Sciences, [S.l.], p. e18325, aug. 2018. ISSN 1677-3225. Available at: <>. Date accessed: 22 july 2019. doi:
Original Research

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