Journal of Conservative Dentistry

ORIGINAL ARTICLE
Year
: 2015  |  Volume : 18  |  Issue : 3  |  Page : 214--217

Influence of different crosshead speeds on diametral tensile strength of a methacrylate based resin composite: An in-vitro study


Anubhav Sood1, Sathyanarayanan Ramarao2, Usha Carounanidy2 
1 Department of Conservative Dentistry and Endodontics, Bapuji Dental College and Hospital, Rajeev Gandhi University of Health Sciences, Davangere, Karnataka, India
2 Department of Conservative Dentistry and Endodontics, Indira Gandhi Institute of Dental Sciences, Sri Balaji Vidyapeeth University, Pondicherry, India

Correspondence Address:
Dr. Anubhav Sood
Lohna Colony, P.O. Bundla, Palampur, Kangra District, Himachal Pradesh
India

Aim: The aim was to evaluate the influence of different crosshead speeds on diametral tensile strength (DTS) of a resin composite material (Tetric N-Ceram). Materials and Methods: The DTS of Tetric N-Ceram was evaluated using four different crosshead speeds 0.5 mm/min (DTS 1), 1 mm/min (DTS 2), 5 mm/min (DTS 3), 10 mm/min (DTS 4). A total of 48 specimens were prepared and divided into four subgroups with 12 specimens in each group. Specimens were made using stainless steel split custom molds of dimensions 6 mm diameter and 3 mm height. The specimens were stored in distilled water at room temperature for 24 h. Universal testing machine was used and DTS values were calculated in MPa. Results: Analysis of variance was used to compare the four groups. Higher mean DTS value was recorded in DTS 2 followed by DTS 4, DTS 1, and DTS 3, respectively. However, the difference in mean tensile strength between the groups was not statistically significant (P > 0.05). Conclusion: The crosshead speed variation between 0.5 and 10 mm/min does not seem to influence the DTS of a resin composite. EGCG at the studied concentrations were not effective in eliminating S. mutans from dentin caries-like lesions.


How to cite this article:
Sood A, Ramarao S, Carounanidy U. Influence of different crosshead speeds on diametral tensile strength of a methacrylate based resin composite: An in-vitro study.J Conserv Dent 2015;18:214-217


How to cite this URL:
Sood A, Ramarao S, Carounanidy U. Influence of different crosshead speeds on diametral tensile strength of a methacrylate based resin composite: An in-vitro study. J Conserv Dent [serial online] 2015 [cited 2019 Dec 11 ];18:214-217
Available from: http://www.jcd.org.in/article.asp?issn=0972-0707;year=2015;volume=18;issue=3;spage=214;epage=217;aulast=Sood;type=0