J Dent Rehabil Appl Sci.  2016 Sep;32(3):184-193. 10.14368/jdras.2016.32.3.184.

Evaluation of marginal leakage of bulk fill flowable composite resin filling with different curing time using micro-computed tomography technology

Affiliations
  • 1Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Republic of Korea. musljin@knu.ac.kr
  • 2Department of Prosthodontics, School of Dentistry, A3DI, Kyungpook National University, Republic of Korea.

Abstract

PURPOSE
To evaluate marginal leakage of bulk fill flowable composite resin filling with different curing time by using microcomputed tomography technology.
MATERIALS AND METHODS
30 previously extracted human molars were randomly divided into 6 groups based upon restorative system and different curing time. Class II cavities (vertical slot cavities) were prepared. An individual metallic matrix was used to build up the proximal wall. The SonicFill or SureFil SDR flow was inserted into the preparation by using 1 bulk increment, followed by light polymerization for different curing times. The different exposure times were 20, 40, and 60 seconds. All specimens were submitted to 5,000 thermal cycles for artificial aging. Micro-CT scanning was performed by using SkyScan 1272. One evaluator assessed microleakage of silver nitrated solution at the resin-dentin interface. The 3D image of each leakage around the restoration was reconstructed with CT-Analyser V.1.14.4. The leakage was analyzed with the Mann-Whitney test.
RESULTS
Significant differences were observed between the light curing times, but no significant differences were found between the bulk fill composite resins. Increasing in the photoactivation time resulted in greater microleakage in all the experimental groups. Those subjected to 60 seconds of light curing showed higher microleakage means than those exposed for 20 seconds and 40 seconds.
CONCLUSION
Increasing the photoactivation time is factor that may increase marginal microlekage of the bulk fill composite resins. Further, micro-CT can nondestructively detect leakage around the resin composite restoration in three dimensions.

Keyword

marginal leakage; bulk fill; curing time; micro-computed tomography

MeSH Terms

Aging
Composite Resins
Humans
Molar
Polymerization
Polymers
Silver
X-Ray Microtomography
Composite Resins
Polymers
Silver

Figure

  • Fig. 1 Microleakage assessment. (A) The region of interest was set up along the cervical wall and coronal wall of each restoration, including their respective extensions at the axial wall. (B) 2D image of leakage around the restoration (C) 3D image of leakage around the restoration (reconstructed by using CT-Analyser).

  • Fig. 2 Representative micro-CT images of SonicFill groups. (A) and (B): group 1, (C) and (D): group 2, (E) and (F): group 3.

  • Fig. 3 Representative micro-CT images of SureFil SDR flow groups. (A) and (B): group 4, (C) and (D): group 5, (E) and (F): group 6.

  • Fig. 4 Representative images of the mid-longitudinal sections and other sections of the restorations (Group 3). (A), (B), and (C): section images for 1 specimen, (E), (F), and (G): section images for another specimen. (B) and (F): images forthe mid-longitudinal sections, (A), (C), (E), and (G): images for the other sections. (D) and (H): reconstructed 3D images of microleakage. (B) shows microleakage toward the pulp chamber, whereas (F) shows no microleakage.


Reference

References

1. Mahmound SH, Al-Wakeel Eel S. Marginal adaptation of ormocer-, silorane-, and methacrylate-based composite restorative systems bonded to dentin cavities after water storage. Quintessence Int. 2011; 42:e131–9.
2. Czasch P, Ilie N. In vitro comparison of mechanical properties and degree of cure of bulk fill composites. Clin Oral Investig. 2013; 17:227–35. DOI: 10.1007/s00784-012-0702-8. PMID: 22411261.
3. Ilie N, Hickel R. Investigations on a methacrylatebased flowable composite based on the SDR technology. Dent Mater. 2011; 27:348–55. DOI: 10.1016/j.dental.2010.11.014. PMID: 21194743.
4. El-Damanhoury H, Platt J. Polymerization shrinkage stress kinetic and related properties of bulk-fill resin composites. Oper Dent. 2014; 39:374–82. DOI: 10.2341/13-017-L. PMID: 23865582.
5. Moorthy A, Hogg CH, Dowling AH, Grufferty BF, Benetti AR, Fleming GJ. Cuspal deflection and microleakage in premolar teeth restored with bulkfill flowable resin-based composite base materials. J Dent. 2012; 40:500–5. DOI: 10.1016/j.jdent.2012.02.015. PMID: 22390980.
6. El-Safty S, Silikas N, Watts DC. Creep deformation of restorative resin-composites intended for bulkfill placement. Dent Mater. 2012; 28:928–35. DOI: 10.1016/j.dental.2012.04.038. PMID: 22656273.
7. Naoum SJ, Ellakwa A, Morgan L, White K, Martin FE, Lee IB. Polymerization profile analysis of resin composite dental restorative materials in real time. J Dent. 2012; 40:64–70. DOI: 10.1016/j.jdent.2011.10.006. PMID: 22044773.
8. Ilie N, Stark K. Curing behaviour of high-viscosity bulk-fill composites. J Dent. 2014; 42:977–85. DOI: 10.1016/j.jdent.2014.05.012. PMID: 24887360.
9. Alrahlah A, Silikas N, Watts DC. Post-cure depth of cure of bulk fill dental resin-composites. Dent Mater. 2014; 30:149–54. DOI: 10.1016/j.dental.2013.10.011. PMID: 24268044.
10. Ilie N, Keßler A, Durner J. Influence of various irradiation processes on the mechanical properties and polymerization kinetics of bulk-fill resin based composites. J Dent. 2013; 41:695–702. DOI: 10.1016/j.jdent.2013.05.008. PMID: 23707645.
11. 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; 28:521–8. DOI: 10.1016/j.dental.2012.02.002. PMID: 22391146.
12. Abbas G, Fleming GJ, Harrington E, Shortall AC, Burke FJ. Cuspal movement and microleakage in premolar teeth restored with a packable composite cured in bulk or in increments. J Dent. 2003; 31:437–44. DOI: 10.1016/S0300-5712(02)00121-5.
13. Tiba A, Zeller GG, Estrich CG, Hong A. A laboratory evaluation of bulk-fill versus traditional multiincrement- fill resin-based composites. J Am Dent Assoc. 2013; 144:1182–3. DOI: 10.14219/jada.archive.2013.0040. PMID: 25946430.
14. Watts DC. Reaction kinetics and mechanics in photo- polymerised networks. Dent Mater. 2005; 21:27–35. DOI: 10.1016/j.dental.2004.10.003. PMID: 15680999.
15. Yoon TH, Lee YK, Lim BS, Kim CW. Degree of polymerization of resin composites by different light sources. J Oral Rehabil. 2002; 29:1165–73. DOI: 10.1046/j.1365-2842.2002.00970.x. PMID: 12472853.
16. Price RB, Ehrnford L, Andreous P, Felix CA. Comparison of quartz-tungsten-halogen, light-emitting diode, and plasma arc curing lights. J Adhes Dent. 2003; 5:193–207. PMID: 14621241.
17. Rueggeberg F. Contemporary issues in photocuring. Compend Contin Educ Dent Suppl. 1999; 25:S4–S15. PMID: 11908395.
18. Visvanathan A, Ilie N, Hickel R, Kunzelmann KH. The influence of curing times and light curing methods on the polymerization shrinkage stress of a shrinkage-optimized composite with hybrid-type prepolymer fillers. Dent Mater. 2007; 23:777–84. DOI: 10.1016/j.dental.2006.06.019. PMID: 16914193.
19. Dewaele M, Asmussen E, Devaux J, Leloup G. Class II restorations: influence of a liner with rubbery qualities on the occurrence and size of cervical gaps. Eur J Oral Sci. 2006; 114:535–541. DOI: 10.1111/j.1600-0722.2006.00407.x. PMID: 17184237.
20. Feilzer AJ, Dooren LH, de GEE AJ, Davidson CL. Influence of light intensity on polymerization shrinkage and integrity of restoration-cavity interface. Eur J Oral Sci. 1995; 103:322–6. DOI: 10.1111/j.1600-0722.1995.tb00033.x. PMID: 8521124.
21. Atai M, Watts DC. A new kinetic model for the photopolymerization shrinkage-strain of dental composites and resin monomers. Dent Mater. 2006; 22:785–91. DOI: 10.1016/j.dental.2006.02.009. PMID: 16540163.
22. Pongprueksa P, Kuphasuk W, Senawongse P. The elastic moduli across various types of resin/dentin interfaces. Dent Mater. 2008; 24:1102–6. DOI: 10.1016/j.dental.2007.12.008. PMID: 18304626.
23. Bouschlicher MR, Rueggeberg FA, Boyer DB. Effect of stepped light intensity on polymerization force and conversion in a photoactivated composite. J Esthet Dent. 2000; 12:23–32. DOI: 10.1111/j.1708-8240.2000.tb00242.x. PMID: 11323830.
24. Ilie N, Stark K. Curing behaviour of high-viscosity bulk-fill composites. J Dent. 2014; 42:977–85. DOI: 10.1016/j.jdent.2014.05.012. PMID: 24887360.
25. 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. DOI: 10.2341/12-395-L. PMID: 23570302.
26. Li X, Pongprueksa P, Van Meerbeek B, De Munck J. Curing profile of bulk-fill resin-based composites. J Dent. 2015; 43:664–72. DOI: 10.1016/j.jdent.2015.01.002. PMID: 25597265.
27. Garcia D, Yaman P, Dennison J, Neiva G. Polymerization shrinkage and depth of cure of bulk fill flowable composite resins. Oper Dent. 2014; 39:441–8. DOI: 10.2341/12-484-L. PMID: 24304339.
28. 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; 40:190–200. DOI: 10.2341/13-324-L. PMID: 25216940.
29. Jang JH, Park SH, Hwang IN. Polymerization shrinkage and depth of cure of bulk-fill resin composites and highly filled flowable resin. Oper Dent. 2015; 40:172–80. DOI: 10.2341/13-307-L. PMID: 25136904.
30. Eden E, Topaloglu-AK A, Cuijpers V, Frenchen JE. Micro-CT for measuring marginal leakage of Class II resin composite restorations in primary molars prepared in vivo. Am J Dent. 2008; 21:393–7. PMID: 19146134.
31. Zhao XY, Li SB, Gu LJ, Li Y. Detection of marginal leakage of Class V restorations in vitro by microcomputed tomography. Oper Dent. 2014; 39:174–80. DOI: 10.2341/12-182-L. PMID: 23802643.
32. Chen X, Cuijpers VM, Fan MW, Frencken JE. Validation of micro-CT against the section method regarding the assessment of marginal leakage of sealant. Aust Dent J. 2012; 57:196–9. DOI: 10.1111/j.1834-7819.2012.01687.x. PMID: 22624761.
33. Raskin A, Tassery H, D’Hoore W, Gonthier S, Vreven J, Degrange M, Déjou J. Influence of the number of sections on reliability of in vitro microleakage evaluations. Am J Dent. 2003; 16:207–10. PMID: 12967077.
34. Abdalla AI, Davidson CL. Comparison of the marginal integrity of in vivo and in vitro Class II composite restorations. J Dent. 1993; 21:158–62. DOI: 10.1016/0300-5712(93)90026-M.
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