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Agrawal A, Manwar NU, Hegde SG, et al. Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study. J Conserv Dent. 2015;18(2):136-9doi: 10.4103/0972-0707.153070.
Agrawal, A., Manwar, N. U., Hegde, S. G., Chandak, M., Ikhar, A., & Patel, A. (2015). Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study. Journal of conservative dentistry : JCD, 18(2), 136-9. https://doi.org/10.4103/0972-0707.153070
Agrawal, Abhishek, et al. "Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study." Journal of conservative dentistry : JCD vol. 18,2 (2015): 136-9. doi: https://doi.org/10.4103/0972-0707.153070
Agrawal A, Manwar NU, Hegde SG, Chandak M, Ikhar A, Patel A. Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study. J Conserv Dent. 2015 Mar-Apr;18(2):136-9. doi: 10.4103/0972-0707.153070. PMID: 25829693; PMCID: PMC4379654.
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J Conserv Dent. 2015 Mar-Apr;18(2):136-9. doi: 10.4103/0972-0707.153070.

Comparative evaluation of surface hardness and depth of cure of silorane and methacrylate-based posterior composite resins: An in vitro study.

Journal of conservative dentistry : JCD

Abhishek Agrawal, Narendra U Manwar, Shubha G Hegde, Manoj Chandak, Anuja Ikhar, Aditya Patel

Affiliations

  1. Department of Conservative Dentistry and Endodontics, Sharad Pawar Dental College, Sawangi, Wardha, Mumbai, Maharashtra, India.

PMID: 25829693 PMCID: PMC4379654 DOI: 10.4103/0972-0707.153070

Abstract

AIM: This in vitro study was carried out to compare the effect of LED light curing system on polymerization and hardness of silorane-based and methacrylate-based posterior composite resin.

MATERIALS AND METHODS: A total of 40 samples, 20 of silorane-based composite Filtek P-90 and 20 of methacrylate-based composite Heliomolar HB measuring 2 mm thickness and 8 mm diameter were prepared using Teflon molds and cured using LED curing light. The samples were polished and tested in Knoop hardness tester using a 50-gram load and dwell time of 15 seconds on top and bottom surfaces. The percentage depth of cure was calculated, and statistical analysis was performed using two-way ANOVA test and Student t- test.

RESULTS: Higher statistically significant values were seen for both the top and bottom surface hardness in silorane-based resins than methacrylate-based resins on LED light curing.

CONCLUSION: Greater depth of cure was achieved in silorane-based posterior composite than in methacrylate-based posterior composite resins with a statistically significant difference.

Keywords: Depth of cure; Silorane-based posterior composites; methacrylate-based posterior composites; posterior composites; surface hardness

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