Journal of Operative Dentistry & Endodontics

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VOLUME 4 , ISSUE 1 ( January-June, 2019 ) > List of Articles

Original Article

Use of Resin Solvent as a Facilitator for Removal of Resin Composite Restoratives by Influencing their Mechanical Properties: Is this Possible?

Inas A Elghandour

Keywords : Laboratory research, Mechanical properties, Removal of resin composite, Resin composites, Resin remover, Resin solvent

Citation Information : Elghandour IA. Use of Resin Solvent as a Facilitator for Removal of Resin Composite Restoratives by Influencing their Mechanical Properties: Is this Possible?. J Oper Dent Endod 2019; 4 (1):1-5.

DOI: 10.5005/jp-journals-10047-0074

License: CC BY-NC 4.0

Published Online: 01-12-2019

Copyright Statement:  Copyright © 2019; The Author(s).


Aim: The aim is to evaluate the influence of resin solvent on Vickers microhardness, flexural strength, and flexural modulus of a resin composite in order to test the ability of resin solvent to soften or weaken resin composite during replacement of failed restoration. Materials and methods: Fifty specimens were prepared from Tetric N-Ceram; forty used for flexural strength and elastic modulus tests and ten used for microhardness test. For flexural strength; they were divided into four groups of ten specimens each; in first group; specimens were not subjected to resin solvent (control), in second, third and fourth groups; specimens were subjected to resin solvent for 1, 3, and 5 minutes respectively. For microhardness, specimens were examined before after application of resin solvent for 1, 3, and 5 minutes with a total of forty readings. Collected data were statistically analyzed. Results: Resin solvent was found to reduce significantly the flexure strength of Tetric N-Ceram compared to the control group. Differences in flexure strength between 1, 3, and 5 minutes applications were statistically nonsignificant. For elastic modulus and microhardness, the influence of resin solvent on resin composite was statistically nonsignificant. Conclusion: Resin solvent weakens the flexural strength of resin composite but did not affect its microhardness or elastic modulus. Increasing the time of application from 1, 3, and 5 minutes did not further reduce the flexural strength. Clinical significance: Resin solvent had shown promising potentials to reduce the strength and hence facilitate removal of failed composite restoration during replacement.

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