The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 19 , ISSUE 3 ( March, 2018 ) > List of Articles

ORIGINAL RESEARCH

Evaluation of Flexural Strength of Polymethyl Methacrylate modified with Silver Colloidal Nanoparticles subjected to Two Different Curing Cycles: An in vitro Study

LM Ranganath, Ajay Gaikwad, Saket K Jain, Kapil S Pal

Citation Information : Ranganath L, Gaikwad A, Jain SK, Pal KS. Evaluation of Flexural Strength of Polymethyl Methacrylate modified with Silver Colloidal Nanoparticles subjected to Two Different Curing Cycles: An in vitro Study. J Contemp Dent Pract 2018; 19 (3):262-268.

DOI: 10.5005/jp-journals-10024-2249

License: CC BY 3.0

Published Online: 01-04-2013

Copyright Statement:  Copyright © 2018; The Author(s).


Abstract

Aim

Silver colloidal nanoparticles have been incorporated into acrylic resins to induce antimicrobial properties. However, as additives, they can influence the mechanical properties of the final product. Mechanical properties are also dependent on different curing cycles. The aim of this study was to evaluate flexural strength of a denture base resin incorporated with different concentrations of silver colloidal nanoparticles subjected to two different curing cycles.

Materials and methods

Lucitone 199 denture base resin was used into which silver colloidal nanoparticles were incorporated at 0.5 and 5% by polymer mass. Specimens devoid of nanoparticles were used as controls. A total of 60 specimens were fabricated and divided into two groups. Each group was divided into three subgroups consisting of 10 specimens each. The specimens were fabricated according to American Dental Association (ADA) specification No. 12 and tested for flexural strength using universal testing machine.

Results

Silver colloidal nanoparticle incorporation at 0.5% concentration increased the mean flexural strength in both curing cycles by 7.5 and 4.4%, respectively, when compared with the control group.

Conclusion

The study suggested that the mean flexural strength value of 0.5% silver colloidal nanoparticles in denture base resin was above the value of the control group both in short and long curing cycles, which makes it clinically suitable as a denture base material. However, at 5% concentration, the statistically significant amount of decrease in flexural strength compared with the value of control group both in short and long curing cycles gives it a questionable prognosis.

Clinical significance

The specimens incorporated with the antimicrobial agent 0.5% silver colloidal nanoparticles and processed by long curing cycles showed significant increase in its flexural strength compared with the control group, which makes it clinically suitable as a denture base material.

How to cite this article

Munikamaiah RL, Jain SK, Pal KS, Gaikwad A. Evaluation of Flexural Strength of Polymethyl Methacrylate modified with Silver Colloidal Nanoparticles subjected to Two Different Curing Cycles: An in vitro Study. J Contemp Dent Pract 2018;19(3):262-268.


HTML PDF Share
  1. Prevalence and risk factors associated with denture-related stomatitis in healthy subjects attending a dental teaching hospital in North Jordan. J Ir Dent Assoc 2008 Apr-May;54(2):80-83.
  2. Effects of an oral health program on the occurrence of oral candidiasis in a long term care facility. Community Dent Oral Epidemiol 2000 Apr;28(2):141-149.
  3. In vitro cytotoxicity of nanoparticles in mammalian germline stem cells. Toxicol Sci 2005 Dec;88(2):412-419.
  4. Silver distribution and release from an antimicrobial denture base resin containing silver colloidal nanoparticles. J Prosthodont 2012 Jan;21(1):7-15.
  5. Further development and evaluation of high impact strength denture base materials. J Dent 1990;18:151-157.
  6. Reinforcement of acrylic resin denture base material with metal or fibre strengtheners. J Oral Rehabil 1992 May;19(3):385-391.
  7. Silver nanoparticles and polymeric medical devices: a new approach to prevention of infection? J Antimicrob Chemother 2004 Dec;54(6):1019-1024.
  8. 12 for Dental Base Polymers. Chicago: Council on Dental Materials and Devices; 1975.
  9. 12 for Denture Base Polymers. Chicago: Council on Dental Materials and Devices; 1999.
  10. Denture stomatitis-a review of the aetiology, diagnosis and management. Aust Dent J 1992 Apr;37(2):107-114.
  11. Antibacterial activity and toxicity of silver—nanosilver versus ionic silver. J Phys Conf Ser 2011;304(1):012029.
  12. Antifungal activity of denture soft lining material modified by silver nanoparticles—A pilot study. Int J Mol Sci 2011;12(7):4735-4744.
  13. Antimicrobial and mechanical properties of acrylic resins with incorporated silver-zinc zeolite—Part I. Gerodontology 2008 Sep;25(3):187-194.
  14. Physical properties of four acrylic denture base resins. J Contemp Dent Pract 2005 Nov;6(4):93-100.
  15. An investigation into the transverse and impact strength of a new indigenous high-impact denture base resin, DPI-tuff and its comparison with most commonly used two denture base resins. J Indian Prosthodont Soc 2006;6(3):133-138.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.