Original Research


DOI :10.26650/eor.20231083203   IUP :10.26650/eor.20231083203    Full Text (PDF)

Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation

Muralidasan KalaivaniS Datta PrasadM IndumathiM SruthipriyaBalachandran JananiO Pavankumar

Purpose

This study was to compare and evaluate the effect of home bleaching on the microhardness and flexural strength of microhybrid and nanohybrid composite resins.

Materials and Methods

The study samples were prepared using a custom-made silicon rubber mold. For microhardness evaluation, 40 disc-shaped specimens (4mm*2mm) were prepared and divided into 4 groups: GROUP A (n=10): microhybrid (GC Solaire X, GC Corporation) control group, GROUP B (n=10) nanohybrid (Tetric N Ceram, Ivoclar Vivadent) control group, GROUP C (n=10): microhybrid bleaching group, GROUP D (n=10) nanohybrid bleaching group. For flexural strength evaluation, 40 bar shaped specimens (25mm*2mm*2mm) were prepared. They were divided into 4 groups, GROUP 1 (n=10): microhybrid control group, GROUP 2 (n=10) nanohybrid control group, GROUP 3 (n=10): microhybrid bleaching group, GROUP 4(n=10) nanohybrid bleaching group. All the control groups were placed in artificial saliva and bleaching groups were exposed to home bleaching agent for 14 days according

to manufacturer’s instructions. The microhardness and flexural strength were evaluated for the respective specimens after 14 days and the data were statistically analyzed.

Results

Home bleaching regimen decreased microhardness of both microhybrid and nanohybrid composites whereas there was no significant effect on the flexural strength. Nanohybrid composites showed greater microhardness values before and after bleaching.

Conclusion

Bleaching agents, irrespective of their concentration can decrease the microhardness of the composite resin samples, which raises a concern about replacement of these restorations due to the effects on physical and mechanical properties.


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Citations

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APA

Kalaivani, M., Prasad, S.D., Indumathi, M., Sruthipriya, M., Janani, B., & Pavankumar, O. (2023). Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation. European Oral Research, 57(2), 90-95. https://doi.org/10.26650/eor.20231083203


AMA

Kalaivani M, Prasad S D, Indumathi M, Sruthipriya M, Janani B, Pavankumar O. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation. European Oral Research. 2023;57(2):90-95. https://doi.org/10.26650/eor.20231083203


ABNT

Kalaivani, M.; Prasad, S.D.; Indumathi, M.; Sruthipriya, M.; Janani, B.; Pavankumar, O. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation. European Oral Research, [Publisher Location], v. 57, n. 2, p. 90-95, 2023.


Chicago: Author-Date Style

Kalaivani, Muralidasan, and S Datta Prasad and M Indumathi and M Sruthipriya and Balachandran Janani and O Pavankumar. 2023. “Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation.” European Oral Research 57, no. 2: 90-95. https://doi.org/10.26650/eor.20231083203


Chicago: Humanities Style

Kalaivani, Muralidasan, and S Datta Prasad and M Indumathi and M Sruthipriya and Balachandran Janani and O Pavankumar. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation.” European Oral Research 57, no. 2 (Mar. 2024): 90-95. https://doi.org/10.26650/eor.20231083203


Harvard: Australian Style

Kalaivani, M & Prasad, SD & Indumathi, M & Sruthipriya, M & Janani, B & Pavankumar, O 2023, 'Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation', European Oral Research, vol. 57, no. 2, pp. 90-95, viewed 29 Mar. 2024, https://doi.org/10.26650/eor.20231083203


Harvard: Author-Date Style

Kalaivani, M. and Prasad, S.D. and Indumathi, M. and Sruthipriya, M. and Janani, B. and Pavankumar, O. (2023) ‘Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation’, European Oral Research, 57(2), pp. 90-95. https://doi.org/10.26650/eor.20231083203 (29 Mar. 2024).


MLA

Kalaivani, Muralidasan, and S Datta Prasad and M Indumathi and M Sruthipriya and Balachandran Janani and O Pavankumar. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation.” European Oral Research, vol. 57, no. 2, 2023, pp. 90-95. [Database Container], https://doi.org/10.26650/eor.20231083203


Vancouver

Kalaivani M, Prasad SD, Indumathi M, Sruthipriya M, Janani B, Pavankumar O. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation. European Oral Research [Internet]. 29 Mar. 2024 [cited 29 Mar. 2024];57(2):90-95. Available from: https://doi.org/10.26650/eor.20231083203 doi: 10.26650/eor.20231083203


ISNAD

Kalaivani, Muralidasan - Prasad, SDatta - Indumathi, M - Sruthipriya, M - Janani, Balachandran - Pavankumar, O. Influence of home bleaching regimen on microhardness and flexural strength of two contemporary composite resins – an in vitro evaluation”. European Oral Research 57/2 (Mar. 2024): 90-95. https://doi.org/10.26650/eor.20231083203



TIMELINE


Submitted07.03.2022
First Revision30.09.2022
Accepted10.10.2022
Published Online05.06.2023

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