International Journal of Clinical Pediatric Dentistry

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VOLUME 10 , ISSUE 1 ( January-March, 2017 ) > List of Articles

Original Article

Comparative Evaluation of Bond Strength and Microleakage of Standard and Expired Composite at Resin–Dentin Interface: An in vitro Study

Nidhi Talreja, ND Shashikiran

Keywords : Bond strength, Expired composites, Microleakage

Citation Information : Talreja N, Shashikiran N. Comparative Evaluation of Bond Strength and Microleakage of Standard and Expired Composite at Resin–Dentin Interface: An in vitro Study. Int J Clin Pediatr Dent 2017; 10 (1):1-4.

DOI: 10.5005/jp-journals-10005-1396

License: CC BY-NC 4.0

Published Online: 01-12-2008

Copyright Statement:  Copyright © 2017; The Author(s).


Background: Evaluation of bond strength and microleakage caused by polymerization shrinkage provides a screening mechanism and an indication of the potential for the clinical success of composite restorations. Aim: The aim of this study was to determine the effect on shear bond strength and microleakage of standard and expired composites. Materials and methods: Selected specimens were etched using 37% phosphoric acid for 15 seconds and were randomly divided into four groups. Group I: Standard composite and bonding agent; group II: Expired composite and bonding agents; group III: Standard composite and expired bonding agent; and group IV: Expired composite and standard bonding agent. Specimens were further subdivided into two subgroups. In subgroup A, specimens were sheared with a universal testing machine, and the results were calculated in MPa; in subgroup B, specimens was sectioned longitudinally and analyzed for leakage (dye penetration) using a stereomicroscope. Results: The results of the present study showed that acceptable values for bond strength and microleakage were obtained even if one of the components of the dental resin composite is expired. Conclusion: In Indian scenario, the expired composite material may provide some assistance in compromised clinical situations. It can be used as an interim restoration and compensate for the high material cost.

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  1. Gupta SK, Saxena P, Pant VA, Pant AB. Release and toxicity of dental resin composite. Toxicol Int 2012 Sep;19(3):225-234.
  2. National Standards Institute/American Dental Association Specification No. 33. Dental terminology. Chicago: American Dental Association 2003.
  3. Yavuz I, Aydin AH, Ulku R, Dulgergil TC, Akdag MZ. New technique: measurement of micro leakage volume in the marginal gaps of the dental restorations. Biotechnol & Biotechnol Eq 2005 Jan;19(3):184-191.
  4. Khadhim AJ. An in vitro comparative evaluation of microleakage in open sandwich technique in Class V restoration (A dye penetration study). J Bagh College Dentistry 2011;23(special issue).
  5. Hegde MN, Bhandary S. An evaluation and comparison of shear bond strength of composite resin to dentin, using newer dentin bonding agents. J Conserv Dent 2008 Apr;11(2):71-75.
  6. Bogra P, Gupta S, Kumar S. Comparative evaluation of microleakage in class II cavities restored with Ceram X and Filtek P-90: an in vitro study. Contemp Clin Dent 2012 Jan;3(1):9-14.
  7. Tirapelli C, Panzeri FD, Panzeri H, Pardini LC, Zaniquelli O. Radiopacity and microhardness changes and effect of X-ray Operating voltage in resin-based materials before and after the expiration date. Mater Res 2004 Sep;7(3):409-412.
  8. Söderholm KJ, Zigan M, Ragan M, Fischlschweiger W, Bergman M. Hydrolytic degradation of dental composites. J Dent Res 1984 Oct;63(10):1248-1254.
  9. Kalyana Krishnan V, Yamuna V. Effect of initiator concentration, exposure time and particle size of the filler upon the mechanical properties of light-curing radiopaque dental composite. J Oral Rehabil 1998 Oct;25(10):747-751.
  10. Hondrum SO. The U.S. Army Institute of dental Research dental materials shelf-life survey: questionnaire results. Mil Med 1991 Sep;156(9):488-491.
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