Journal of Conservative Dentistry

ORIGINAL ARTICLE
Year
: 2016  |  Volume : 19  |  Issue : 2  |  Page : 116--119

The effect of temperature on rheological properties of endodontic sealers


Roshni U Rai, Kiran P Singbal, Vaishali Parekh 
 Department of Conservative Dentistry and Endodontics, KM Shah Dental College and Hospital, Vadodara, Gujarat, India

Correspondence Address:
Roshni U Rai
Flat No. B 504, Aashirwad 1, Poonam Sagar Complex, Mira Road East, Thane, Mumbai - 401 107, Maharashtra
India

Aim: The purpose of this study was to investigate temperature-dependent rheological properties of three endodontic sealers MTA Fillapex (Angelus, Brazil), AH Plus (Dentsply, Germany), and EndoREZ (Ultradent, USA). Materials and Methods: Five samples of each group of endodontic sealers (n = 30) were freshly mixed and placed on the plate of a rheometer (MCR 301, AntonPaar, Physica) and examined at 25° C and 37° C temperature, respectively. Rheological properties of the sealers were calculated according to the loss modulus (GDQ), storage modulus (GSQ), loss factor (Tan δ), and complex viscosity (ç*) using dynamic oscillatory shear tests. Results: Statistical analysis (Wilcoxon signed-rank test) demonstrated that MTA Fillapex exhibited higher loss modulus (GDQ > GSQ) and a crossover region. AH Plus and EndoREZ had a higher storage modulus (GSQ > GDQ) at both temperatures. Loss factor (Tan δ) of MTA Fillapex was the highest compared to AH Plus, followed by EndoREZ. With a temperature change from 25°C to 37°C, MTA Fillapex exhibited a decrease while AH Plus exhibited an increase and, EndoREZ exhibited the least change, in complex viscosity (ç* ). Conclusions: EndoREZ exhibited better rheological properties compared to the other two test sealers.


How to cite this article:
Rai RU, Singbal KP, Parekh V. The effect of temperature on rheological properties of endodontic sealers.J Conserv Dent 2016;19:116-119


How to cite this URL:
Rai RU, Singbal KP, Parekh V. The effect of temperature on rheological properties of endodontic sealers. J Conserv Dent [serial online] 2016 [cited 2019 Oct 18 ];19:116-119
Available from: http://www.jcd.org.in/article.asp?issn=0972-0707;year=2016;volume=19;issue=2;spage=116;epage=119;aulast=Rai;type=0