Research Article

DOI :10.26650/eor.20241388134 IUP :10.26650/eor.20241388134 Full Text (PDF)

Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites

Purpose: This study aimed to evaluate the effects of the light guide tip diameter on the degree of conversion, micro-hardness, and depth of cure of bulk-fill composites compared to a conventional composite.

Materials and Methods: Layers of Tetric EvoCeram (2 mm), Tetric EvoCeram Bulk Fill (4 mm), SonicFill 2 (5 mm) were placed in 4 mm diameter molds and were cured with LED light curing unit having 13/8 or 13/4 mm diameter turbo light guide tips for 10 s with a total number of 60 samples (n=5). Then, specimens were stored in a dark and dry environment at 37°C for 24 h, and Vickers micro-hardness values of the top and bottom surfaces of 30 specimens were measured. The other 30 specimens were pulverized, and the degree of conversion values of the specimens was measured with FTIR-ATR. The depth of cure was determined by proportioning the bottom surface's micro-hardness value to the top surfaces. Data were analyzed with the Shapiro-Wilks test, Student’s t-test, and Pearson’s correlation analysis (p < 0.05)

Results: The degree of conversion and the depth of cure of bulk-fill composites cured with 13/8 mm diameter tip were higher than those cured with 13/4 mm diameter tip (p<0.01). The degree of conversion of the bulk-fill composites applied in the layer thickness recommended by the manufacturer was below the clinically accepted rate of 55%, and the depth of cure remained below 80%.

Conclusion: The curing of bulk-fill composites with light guide tips of different diameters affects the degree of conversion and the depth of the cure.

Keywords: bulk-fill composite, degree of conversion, depth of cure, light-guide tip diameter, micro-hardness.

References

1. Garoushi S, Vallittu P, Shinya A, Lassila L. Influence of increment thickness on light transmission, degree of conversion and microhardness of bulk fill composites. Odontology 2016;104:291-7. google scholar
2. Par M, Gamulin O, Marovic D, Klaric E, Tarle Z. Raman spectroscopic assessment of degree of conversion of bulk-fill resin composites--changes at 24 hours post cure. Oper Dent 2015;40:E92-E101. google scholar
3. Miletic V, Pongprueksa P, De Munck J, Brooks NR, Van Meerbeek B. Curing characteristics of flowable and sculptable bulk-fill composites. Clin Oral Investig 2017;21:1201-12. google scholar
4. Al-Ahdal K, Ilie N, Silikas N, Watts DC. Polymerization kinetics and impact of post polymerization on the degree of conversion of bulk-fill resin-composite at clinically relevant depth. Dent Mater 2015;31:1207-13. google scholar
5. Tarle Z, Attin T, Marovic D, Andermatt L, Ristic M, Taubock TT. Influence of irradiation time on subsurface degree of conversion and microhardness of high-viscosity bulk-fill resin composites. Clin Oral Investig 2015;19:831-40. google scholar
6. Sideridou ID, Achilias DS. Elution study of unreacted Bis-GMA, TEGDMA, UDMA, and BisEMA from light-cured dental resins and resin composites using HPLC. J Biomed Mater Res B Appl Biomater 2005;74:617-26. google scholar
7. Fronza BM, Rueggeberg FA, Braga RR, Mogilevych B, Soares LE, Martin AA, Ambrosano G, Giannini M. Monomer conversion, microhardness, internal marginal adaptation, and shrinkage stress ofbulk-fill resin composites. Dent Mater 2015;31:1542-51 google scholar
8. Ilie N, Bucuta S, Draenert M. Bulk-fill resin-based composites: an in vitro assessment of their mechanical performance Oper Dent 2013;38:618-25. google scholar
9. Monterubbianesi R, Orsini G, Tosi G, Conti C, Librando V, Procaccini M, Putignano A. Spectroscopic and Mechanical Properties of a New Generation of Bulk Fill Composites. Front Physiol 2016;7:652. google scholar
10. Price RB, Derand T, Sedarous M, Andreou P, Loney RW. Effect of distance on the power density from two light guides. J Esthet Dent 2000;12:320-7. google scholar
11. Corciolani G, Vichi A, Davidson CL, Ferrari M. The influence of tip geometry and distance on light-curing efficacy. Oper Dent 2008;33:325-31. google scholar
12. Abed YA, Sabry HA, Alrobeigy NA. Degree of conversion and surface hardness ofbulk-fill composite versus incremental-fill composite. Tanta Dental Journal 2015;12:71-80. google scholar
13. Shimokawa CAK, Turbino ML, Giannini M, Braga RR, Price RB. Effect of light curing units onthe polymerization of bulk fill resin-based composites. Dent Mater 2018;34(8):1211-21. google scholar
14. Moreira RJ, de Deus RA, Ribeiro MTH, Braga SSL, Schettini ACT, Price RB, Soares CJ. Effect of Light-curing Unit Design and Mouth Opening on the Polymerization of Bulk-fill Resinbased Composite Restorations in Molars. J Adhes Dent 2021;23:121-31. google scholar
15. 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:E141-E55. google scholar
16. Braga S, Schettini A, Carvalho E, Shimokawa C, Price RB, Soares CJ. Effect of the Sample Preparation and Light-curing Unit on the Microhardness and Degree of Conversion of Bulk-fill Resin-based Composite Restorations. Oper Dent 2022;47:163-72. google scholar
17. Cardoso IO, Machado AC, Fernandes LO, Soares PV, Raposo LHA. Influence of Tip Diameter and Light Spectrum of Curing Units on the Properties of Bulk-Fill Resin Composites. Eur J Dent 2022;16:360-66. google scholar
18. Cohen, J. Statistical power analysis for the behavioral sciences. Hillsdale, New Jersey: Lawrence Erlbaum Associate; 1998. google scholar
19. Ferracane JL, Greener EH. Fourier transform infrared analysis of degree of polymerization in unfilled resins--methods comparison. J Dent Res 1984;63:1093-5. google scholar
20. Anusavice KJ, Shen C, Rawls HR. Phillips' science of dental materials. 12th ed. St Louis: Elsevier Health Sciences; 2013. google scholar
21. Papadogiannis D, Tolidis K, Gerasimou P, Lakes R, Papadogiannis Y. Viscoelastic properties, creep behavior and degree of conversion of bulk fill composite resins. Dent Mater 2015;31:1533-41. google scholar
22. Salem HN, Hefnawy SM, Nagi SM. Degree of conversion and polymerization shrinkage of low shrinkage bulk-fill resin composites. Contemp Clin Dent 2019;10:465-70. google scholar
23. Ilie N, Keßler A, Durner J. Influence of various irradiation processes on the mechanical properties and polymerisation kinetics of bulk-fill resin based composites. J Dent 2013;41:695-702. google scholar
24. Zorzin J, Maier E, Harre S, Fey T, Belli R, Lohbauer U, Petschelt A, Taschner M. Bulk-fill resin composites: polymerization properties and extended light curing. Dent Mater 2015;31:293-301. google scholar
25. Rocha MG, de Oliveira D, Correa IC, Correr-Sobrinho L, Sinhoreti M, Ferracane JL, Correr AB. Light-emitting Diode Beam Profile and Spectral Output Influence on the Degree of Conversion of Bulk Fill Composites. Oper Dent 2017;42:418-27. google scholar
26. Par M, Gamulin O, Marovic D, Klaric E, Tarle Z. Effect of temperature on post-cure polymerization of bulk-fill composites. J Dent 2014;42:1255-60. google scholar
27. Derchi G, Vano M, Ceseracciu L, Diaspro A, Salerno M. Stiffness effect of using polywave or monowave LED units for photo-curing different bulk fill composites. Dent Mater J 2018;37:709-16. google scholar
28. Li X, Pongprueksa P, Van Meerbeek B, De Munck J. Curing profile of bulk-fill resin-based composites. J Dent 2015;43:664-72. google scholar
29. Leprince JG, Palin WM, Vanacker J, Sabbagh J, Devaux J, Leloup G. Physico-mechanical characteristics of commercially available bulk-fill composites. J Dent 2014;42:993-1000. google scholar
30. Shimokawa C, Price RB, Soares CJ. Effect of the Sample Preparation and Light-curing Unit on the Microhardness and Degree of Conversion of Bulk-fill Resin-based Composite Restorations. Oper Dent 2022;47:163-72. google scholar
31. Carrillo-Marcos A, Salazar-Correa G, Castro-Ramirez L, Ladera-Castañeda M, López-Gurreonero C, Cachay-Criado H, Aliaga-Mariñas A, Cornejo-Pinto A, Cervantes-Ganoza L, Cayo-Rojas CF. The Microhardness and Surface Roughness Assessment of Bulk-Fill Resin Composites Treated with and without the Application of an Oxygen-Inhibited Layer and a Polishing System: An In Vitro Study. Polymers (Basel) 2022;14:3053. google scholar
32. Nagi, S.M. Moharam, L.M. ve Zaazou, M.H. (2015). Effect of resin thickness, and curing time on the micro-hardness of bulk-fill resin composites. Journal of Clinical and Experimental Dentistry 1;7:600-4. google scholar
33. Soto-Montero J, Nima G, Rueggeberg FA, Dias C, Giannini M. Influence of Multiple Peak Light-emitting-diode Curing Unit Beam Homogenization Tips on Microhardness of Resin Composites. Oper Dent 2020;45:327-38. google scholar
34. Aldossary MS, Santini A. The influence of two different curing regimens on light energy transmission through bulk-fill resin composites and Vickers hardness. Am J Dent 2016;29:282-88. google scholar
35. Ilie N, Luca BI. Efficacy of modern light curing units in polymerizing peripheral zones in simulated large bulk-fill resin-composite fillings. Oper Dent 2018;43:416-25. google scholar
36. Ilie N. Sufficiency of curing in high-viscosity bulk-fill resin composites with enhanced opacity. Clin Oral Investig 2019;23:747-55. google scholar
37. Rizzante FAP, Duque JA, et al. Polymerization shrinkage, microhardness and depth of cure of bulk fill resin composites. Dent Mater J 2019;38:403-10. google scholar
38. Par M, Repusic I, et al. The effects of extended curing time and radiant energy on microhardness and temperature rise of conventional and bulk-fill resin composites. Clin Oral Investig 2019;23:3777-88. google scholar
39. Comba A, Scotti N, Maravic T, et al. Vickers hardness and shrinkage stress evaluation of low and high viscosity bulk-fill resin composite. Polymers (Basel) 2020;12:1477. google scholar
40. Hasanain FA, Nassar HM, Ajaj RA. Effect of Light Curing Distance on Microhardness Profiles of Bulk-Fill Resin Composites. Polymers (Basel) 2022;14:528. google scholar
41. Lee CI, Yi MD, Gage BM, Yarbrough LN, Kirkwood BJ, Lien W. Post-Cure Polymerization and Depth-of-Cure Behaviors of Dental Bulk-Fill Resin-Based Composites. Med J (Ft Sam Houst Tex) 2021;(PB 8-21-10/11/12):74-82. google scholar
42. Rocha MG, Roulet JF, Sinhoreti MAC, Correr AB, Oliveira D. Light Transmittance and Depth of Cure of a Bulk Fill Composite Based on the Exposure Reciprocity Law. Braz Dent J 2021;32:78-84. google scholar
43. Almuallem Z, McDonnell S, Busuttil-Naudi A, Santini A. The effect of irradiation distance on light transmittance and vickers hardness ratio of two bulk-fill resin-based composites. Eur J Prosthodont Restor Dent 2016;24:203-14. google scholar
44. Vandewalle KS, Roberts HW, Rueggeberg FA. Power distribution across the face of different light guides and its effect on composite surface microhardness. J Esthet Restor Dent 2008;20:108-18. google scholar
45. Leprince J, Palin WM, Mullier T, Devaux J, Vreven J, Leloup G. Investigating filler morphology and mechanical properties of new low-shrinkage resin composite types. J Oral Rehabil 2010;37:364-76 google scholar
46. Mackert, J.R. Physical properties and biocompatibility. In: O’Brien WC (Ed). Dental materials and their selecton. Canada: Quintessence Publishing Co, Inc; 2002. google scholar

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APA

Keleş, Z.H., & Tarım, B. (2024). Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites. European Oral Research, 0(0), -. https://doi.org/10.26650/eor.20241388134

AMA

Keleş Z H, Tarım B. Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites. European Oral Research. 2024;0(0):-. https://doi.org/10.26650/eor.20241388134

ABNT

Keleş, Z.H.; Tarım, B. Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites. European Oral Research, [Publisher Location], v. 0, n. 0, p. -, 2024.

Chicago: Author-Date Style

Keleş, Zeynep Hale, and Berna Tarım. 2024. “Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites.” European Oral Research 0, no. 0: -. https://doi.org/10.26650/eor.20241388134

Chicago: Humanities Style

Keleş, Zeynep Hale, and Berna Tarım. “Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites.” European Oral Research 0, no. 0 (Nov. 2024): -. https://doi.org/10.26650/eor.20241388134

Harvard: Australian Style

Keleş, ZH & Tarım, B 2024, 'Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites', European Oral Research, vol. 0, no. 0, pp. -, viewed 22 Nov. 2024, https://doi.org/10.26650/eor.20241388134

Harvard: Author-Date Style

Keleş, Z.H. and Tarım, B. (2024) ‘Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites’, European Oral Research, 0(0), pp. -. https://doi.org/10.26650/eor.20241388134 (22 Nov. 2024).

MLA

Keleş, Zeynep Hale, and Berna Tarım. “Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites.” European Oral Research, vol. 0, no. 0, 2024, pp. -. [Database Container], https://doi.org/10.26650/eor.20241388134

Vancouver

Keleş ZH, Tarım B. Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites. European Oral Research [Internet]. 22 Nov. 2024 [cited 22 Nov. 2024];0(0):-. Available from: https://doi.org/10.26650/eor.20241388134 doi: 10.26650/eor.20241388134

ISNAD

Keleş, ZeynepHale - Tarım, Berna. “Effect of light guide tip diameter on the degree of conversion and depth of cure of bulk-fill composites”. European Oral Research 0/0 (Nov. 2024): -. https://doi.org/10.26650/eor.20241388134

TIMELINE

Submitted	08.11.2023
Accepted	12.03.2024
Published Online	11.07.2024

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