Comparison of the rheological properties of four root canal sealers.

Seok Woo Chang; Young-kyu Lee; Qiang Zhu; Won Jun Shon; Woo Cheol Lee; Kee Yeon Kum; Seung Ho Baek; In Bog Lee; Bum-soon Lim; Kwang Shik Bae

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Comparison of the rheological properties of four root canal sealers.

Author: Seok Woo CHANG ¹ ; Young-Kyu LEE ² ; Qiang ZHU ³ ; Won Jun SHON ⁴ ; Woo Cheol LEE ⁴ ; Kee Yeon KUM ⁴ ; Seung Ho BAEK ⁴ ; In Bog LEE ⁴ ; Bum-Soon LIM ⁵ ; Kwang Shik BAE ⁴
Author Information

1. Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea.
2. National Instrumentation Center for Environmental Management, Seoul National University, Seoul, Korea.
3. Department of Endodontology, School of Dental Medicine, University of Connecticut Health Center, Farmington, USA.
4. Department of Conservative Dentistry, Dental Research Institute, School of Dentistry, Seoul National University Dental Hospital, Seoul National University, Seoul, Korea.
5. Dental Research Institute and Department of Dental Biomaterials, School of Dentistry, Seoul National University, Seoul, Korea.
Publication Type:Journal Article
MeSH: Materials Testing; Rheology; Root Canal Filling Materials; Temperature; Viscosity
From: International Journal of Oral Science 2015;7(1):56-61
CountryChina
Language:English
Abstract: The flowability of a root canal sealer is clinically important because it improves the penetration of the sealer into the complex root canal system. The purpose of this study was to compare the flowabilities of four root canal sealers, measured using the simple press method (ISO 6876), and their viscosities, measured using a strain-controlled rheometer. A newly developed, calcium phosphate-based root canal sealer (Capseal) and three commercial root canal sealers (AH Plus, Sealapex and Pulp Canal Sealer EWT) were used in this study. The flowabilities of the four root canal sealers were measured using the simple press method (n=5) and their viscosities were measured using a strain-controlled rheometer (n=5). The correlation between these two values was statistically analysed using Spearman's correlation test. The flow diameters and the viscosities of the root canal sealers were strongly negatively correlated (ρ=-0.8618). The viscosity of Pulp Canal Sealer EWT was the lowest and increased in the following order: AH Plus