International Journal of Dental Sciences and Research
ISSN (Print): 2333-1135 ISSN (Online): 2333-1259 Website: Editor-in-chief: Marcos Roberto Tovani Palone
Open Access
Journal Browser
International Journal of Dental Sciences and Research. 2019, 7(1), 18-20
DOI: 10.12691/ijdsr-7-1-4
Open AccessArticle

Effect of Bench Time on Surface Hardness of Nanofiller Composite Resin

Kholidina Imanda Harahap1, , Astrid Yudhit1 and Febby Revita Sari1

1Department of Dental Material and Technology, Faculty of Dentistry Universitas Sumatera Utara, Medan, Indonesia

Pub. Date: February 26, 2019

Cite this paper:
Kholidina Imanda Harahap, Astrid Yudhit and Febby Revita Sari. Effect of Bench Time on Surface Hardness of Nanofiller Composite Resin. International Journal of Dental Sciences and Research. 2019; 7(1):18-20. doi: 10.12691/ijdsr-7-1-4


The purpose of this study was to evaluate the effect of different bench time on surface hardness of the composite resin after being stored in the refrigerator at 4¡ãC. Before used in this study, the composite resin was refrigerated at 4¡ãC for the test group and kept at 25¡ãC for the control group. The specimens were divided into control group (I) and five experimental groups according to the bench time before polymerization, 0 (II); 15 (III); 30 (IV); 45(V); and 60 (VI) minutes. Sixty specimens with 10 mm diameter and 2 mm thickness were made by using nanofiller composite resin. The material was filled into stainless steel mold and curing for 20 s. After kept in a dark box for 24 hours, the surface hardness of all specimens were tested using Microhardness Tester. The data were analyzed with one-way ANOVA (p¡Ü0.05) and LSD¡¯s post hoct test. The results showed that the 60 minute bench time group presented the highest surface hardness value followed by 45, 30, 15 and 0 minutes bench time group. Moreover, the hardness value of 60 min group was almost similar with the control group. Statistical analysis showed no significant differences (p>0.05) between groups. It concluded, bench time has an effect on the surface hardness of composite resin but no significant differences statistically.

bench time hardness nanofiler composite resin

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit


[1]  M. M. Al Shaafi, The Saudi Dental Journal, 29, 48, (2017).
[2]  K. J. Anusavice, Philip's Science of Dental Materials, 12th ed, Elsevier, St.Louis (2013).
[3]  F. H.R. Osternack, D. B.M. Caldas, N. R. Rached, S. Vieira, A. J. Platt, and J. B. de Almeida, Braz. Dent J, 20, 42, (2009).
[4]  A. L. Faria-e-Silva, E. Piva, and R. R. Moraes, European Journal of Dentistry, 4, 150, (2010).
[5]  C. R. G. Torres, F. M. T. Caneppele,B. A. Borges, A. C. M. Torres, and M. A. M. Ara¨²jo, IJCD, 2, 41, (2011).
[6]  W. M. Palin, M.A. Hadis, JG Leprince, G. lLeloup, L. Boland, GJ Fleming, G. Krastl. DC Watts, Dent. Mater, 30, 507, (2014).
[7]  M. Daronch, F. A. Rueggeberg, M. F. De Goes, and R. Giudici, J Dent Res, 85, 38, (2006).
[8]  M. Daronch, F. A. Rueggeberg, and M. F. De Goes, J Dent Res, 84, p. 663, (2005).
[9]  N. Prasanna, Y. Pallavi Reddy, S. Kavitha, and L. Lakshmi Narayanan, Indian J Dent Res, 8, 173, (2014).
[10]  W. Awliya, J.Contemp Dent Pract, 8, 9, (2007).
[11]  T. S. J. Kashi, F. Fereidouni, K. Khoshroo, S. Heidari, R. Masaeli, and M. Mohammadian, Biomedical Technologies, 2, 15, (2015).
[12]  S. Lucey, C. D. Lynch, N. J. Ray, F. M. Burke, and A. Hannigan, Journal of Oral Rehabilitation, 1, (2009).
[13]  K. Harahap, A. Yudhit, and F. Sari. Effect of bench time polymerization on depth of cure of dental composite resin. IOP Conf. Ser.: Mater. Sci. Eng. 223 012062, 1, (2017).
[14]  C. A. Munoz, P.R. Bond, J. S. Y. Munoz, D. Tan, and J. Peterson, American Journal of Dentistry, 21, 215, (2008).