The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 14 , ISSUE 1 ( January-February, 2013 ) > List of Articles

RESEARCH ARTICLE

Degree of Conversion of Polymer-matrix Composite assessed by FTIR Analysis

Mateus Rodrigues Tonetto, Marcelo Ferrarezi de Andrade, Shelon Cristina Souza Pinto, Alvaro Henrique Borges, Matheus Coelho Bandéca, Alessandra de Nara Souza Rastelli, José Roberto Cury Saad, Fábio Luis Miranda Pedro

Citation Information : Tonetto MR, de Andrade MF, Pinto SC, Borges AH, Bandéca MC, de Nara Souza Rastelli A, Saad JR, Pedro FL. Degree of Conversion of Polymer-matrix Composite assessed by FTIR Analysis. J Contemp Dent Pract 2013; 14 (1):76-79.

DOI: 10.5005/jp-journals-10024-1274

Published Online: 01-02-2013

Copyright Statement:  Copyright © 2013; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aims and objectives

The behavior of polymer-matrix composite is dependent on the degree of conversion. The aim of this study was to evaluate the degree of conversion of two resin cements following storage at 37°C immediately, 24 and 48 hours, and 7 days after light-curing by FTIR analysis.

Materials and methods

The specimens were made in a metallic mold and cured with blue LED with power density of 500 mW/ cm2 for 30 seconds. The specimens were pulverized, pressed with KBr and analyzed with FTIR following storage times.

Statistical analysis used

ANOVA (two-way) and Tukey's post hoc.

Results

To the polymer-matrix composites between 24 and 48 hours does not show a significant increase (p > 0.05), however, the highest values were found after 7 days.

Conclusion

The polymer-matrix composites used in this study showed similarity on the degree of conversion and increased of according to the time of storage.

How to cite this article

Tonetto MR, Pinto SCS, de Nara Souza Rastelli A, Borges AH, Saad JRC, Pedro FLM, de Andrade MF, Bandéca MC. Degree of Conversion of Polymer-matrix Composite assessed by FTIR Analysis. J Contemp Dent Pract 2013;14(1):76-79.


PDF Share
  1. Survival rates of endodontically treated teeth restored with fiberreinforced custom posts and cores: A 97-month study. Int J Prosthodont 2007;20:633-39.
  2. Procera AllCeram crowns followed for 5 to 10.5 years: A prospective clinical study. Int J Prosthodont 2001;14:504-09.
  3. Prospective clinical trial of polyethylene fiber ribbon-reinforced, resin composite post-core buildup restorations. Int J Prosthodont 2007;20:55-56.
  4. Bond strength of a new universal self-adhesive resin luting cement to dentin and enamel. Clin Oral Investig 2005;9:161-67.
  5. Effect of fatigue testing on core integrity and post microleakage of teeth restored with different post systems. J Endod 2003;29:125-31.
  6. Intracoronal sealing ability of two dental cements. J Endod 2002;28:443-47.
  7. Root reinforcement with a resin-bonded preformed post. J Prosthet Dent 1997;78:10-14.
  8. Shear bond strength of four resin cements used to lute ceramic core material to human dentin. J Prosthodont 2008;17:634-40.
  9. Luting agents for ceramic and polymeric inlays and onlays. Int Dent J 1992;42:145-49.
  10. Changes on degree of conversion of dualcure luting light-cured with blue LED. Laser Phys 2009;19:1050-55.
  11. Bonding of an auto-adhesive luting material to enamel and dentin. Dent Mater 2004;20:963-71.
  12. Effect of curing mode on bond strength of self-adhesive resin luting cements to dentin. J Biomed Mater Res B Appl Biomater 2010;93:122-27.
  13. Microtensile bond strength of three luting resins to human regional dentin. Dent Mater 2006;22:45-56.
  14. Microtensile bond strength and interfacial properties of selfetching and self-adhesive resin cements used to lute composite onlays under different seating forces. J Adhes Dent 2008;8:327-35.
  15. Bonding effectiveness of adhesive luting agents to enamel and dentin. Dent Mater 2007;23:71-80.
  16. The effect of resin composite pre-heating on monomer conversion and polymerization shrinkage. Dent Mater 2009;25:514-19.
  17. Degree of conversion of two lingual retainer adhesives cured with different light sources. Eur J Orthod 2005;27:173-79.
  18. Mechanical properties of resin cements with different activation modes. J Oral Rehabil 2002;29:257-62.
  19. The structural scope of biomaterials as amalgam alternatives, Transactions of Academy of Dental Materials 1996;9:51.
  20. Effect of power density and irradiation time on degree of conversion and temperature. Laser Phys 2008;18:1074-79.
  21. Light-and time-dependent polymerization of dual-cured resin luting agent beneath ceramic. Acta Odontol Scand 2008;66:257-61.
  22. Changes in the temperature of a dental light-cured composite resin by different light-curing units. Laser Phys 2008;18:1003-07.
  23. Orthodontic brackets removal under shear and tensile bond strength resistance tests a comparative test between light sources. Laser Phys Lett 2008;5:220-26.
  24. Curing depth of composite resin light cured by LED and halogen light-curing units. Laser Phys 2008;18:1365-69.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.