The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 9 , ISSUE 2 ( February, 2008 ) > List of Articles

RESEARCH ARTICLE

Sorption and Solubility of Composites Cured with Quartz-tungsten Halogen and Light Emitting Diode Light-curing Units

Luci Regina P. Archegas, Danilo B. M. Caldas, Rodrigo N. Rached, Sergio Vieira, Evelise M. Souza

Citation Information : Archegas LR, Caldas DB, Rached RN, Vieira S, Souza EM. Sorption and Solubility of Composites Cured with Quartz-tungsten Halogen and Light Emitting Diode Light-curing Units. J Contemp Dent Pract 2008; 9 (2):73-80.

DOI: 10.5005/jcdp-9-2-73

License: CC BY-NC 3.0

Published Online: 01-02-2008

Copyright Statement:  Copyright © 2008; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The objective of this study was to evaluate the effect of light polymerization on water sorption and solubility of hybrid composites.

Methods and Materials

Three composite resins were used to make discs cured with either quartz-tungsten halogen (QTH) or light emitting diode (LED) curing units. The specimens were stored in a desiccator at 37°C and weighted to a constant mass, then immersed in deionized water for different periods of time, and reconditioned until achieving a constant mass. Sorption and solubility were calculated and subjected to analysis of variance (ANOVA) and Tukey tests (p<0.01).

Results

There were no statistically significant differences between the light sources. Water sorption increased with storage time for all the composites. The lowest sorption was observed for Herculite XRV™, followed by Tetric Ceram™, and Filtek Z250™. Increased storage times reduced the solubility of Filtek Z250™ but did not affect the solubility of Herculite XRV™ and Tetric Ceram™.

Conclusion

Water sorption and solubility of composites are not affected by the type of polymerization when the same intensity and exposure times are used. Thus, the differences found are probably related to the composition of the materials.

Clinical Significance

Water sorption and solubility of composites can lead to a shortened service life. However, these properties are not correlated to the type of polymerization.

Citation

Archegas LRP, Caldas DBM, Rached RN, Vieira S, Souza EM. Sorption and Solubility of Composites Cured with Quartz-tungsten Halogen and Light Emitting Diode Light-curing Units. J Contemp Dent Pract 2008 February;(9)2:073-080.


PDF Share
  1. Composites for use in posterior teeth: Mechanical properties tested under dry and wet conditions. J Biomed Mater Res 1986; 20:261-71.
  2. Influence of filler type and water exposure on flexural strength of experimental composite resins. J Dent Res 1988; 67:836-40.
  3. Influence of water exposure on the tensile strength of composites. J Dent Res 1990; 69:1812-6.
  4. Water and abrasive effects on three-body wear of composites. J Dent Res 1991; 70:1074-81.
  5. Water sorption and solubility of resin-based materials following inadequate polymerization by a visible-light curing system. J Oral Rehabil 1989; 16:57-61.
  6. Effects of cyclic temperature changes on water sorption and solubility of composite restoratives. Oper Dent 2002; 27:147-53.
  7. Diffusion of water in composite filling materials. J Dent Res 1976; 55:730-2.
  8. Alternative interpretations of water sorption values of composite resins. J Dent Res 1985; 64:78-80.
  9. Water sorption and mechanical properties of light-cured proprietary composite tooth restorative materials. Biomaterials 1992; 13:105-9.
  10. Hydrolytic degradation of dental composites. J Dent Res 1984; 63:1248-54.
  11. Hygroscopic and hydrolytic effects in dental polymer networks. Dent Mater. 2006; 22:211-22.
  12. Elution of leachable components from composites. J Oral Rehabil 1994; 21:441-52.
  13. Water sorption and solubility of dental composites and identification of monomers released in an aqueous environment. J Oral Rehabil 2001; 28:1106-15.
  14. Leaking of fillers in dental composites. J Dent Res 1983; 62:126-30.
  15. Organic leachables from polymer-based dental filling materials. Eur J Oral Sci 1999; 107:378-83.
  16. Physical and mechanical properties of anterior and posterior composite restorative materials. Dent Mater 1989; 5:365-8.
  17. ISO 4049: Dentistry polymer – based filling, restorative and luting materials. Switzerland, 2000.
  18. Measurement of water sorption in dental composites. Biomaterials 1998; 19:77-83.
  19. Review of the current status and challenges for dental posterior restorative composites: clinical, chemistry, and physical behavior considerations. Summary of discussion from the Portland Composites Symposium (POCOS) June 17-19, 2004, Oregon Health and Science University, Portland, Oregon. Dent Mater 2005; 21:3-6.
  20. Study of water sorption, solubility and modulus of elasticity of light-cured dimethacrylate-based dental resins. Biomaterials 2003; 24:655-65.
  21. Hydrolytic stability of silanated zirconia-silica-urethane dimethacrylate composites. J Oral Rehabil 1995; 22:213-20.
  22. Sorption and solubility of resin-based restorative dental materials. J Dent 2003; 31:43-50.
  23. Effect of chemical structure on degree of conversion in lightcured dimethacrylate-based dental resins. Biomaterials 2002; 23:1819-29.
  24. Filler leachability of composites stored in distilled water or artificial saliva. J Dent Res 1996; 75:1692-9.
  25. Influence of initial water content on the subsequent water sorption and solubility behavior in restorative polymers. Am J Dent 2005; 18:177-81.
  26. The influence of short and mediumterm water immersion on the hydrolytic stability of novel low-shrink dental composites. Dent Mater 2005; 21:852-63.
  27. Hygroscopic expansion and solubility of composite restoratives. Dent Mater 2003; 19:77-86.
  28. How light irradiance and curing time affect monomer conversion in lightcured resin composites. Eur J Oral Sci 2003; 111:536-42.
  29. High power light emitting diode (LED) arrays versus halogen light polymerization of oral biomaterials: Barcol hardness, compressive strength and radiometric properties. Biomaterials 2002; 23:2955-63.
  30. Effects of various light curing methods on the leachability of uncured substances and hardness of a composite resin. J Oral Reabil 2004; 31:258-64.
  31. Thermal emission and curing efficiency of LED and halogen curing lights. Oper Dent 2005; 30:257-64.
  32. Polymerization efficiency of LED curing lights. J Esthet Restor Dent 2002;14:286-95.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.