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Influence of Heating on the Physicochemical Properties of Novel Calcium Silicate-based Endodontic Sealers
Iandara L Scardini1, Anelise V Masiero2, Marcelo Dos Santos1
1Department of Operative Dentistry, Faculty of Dentistry, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
Introduction:
The present study evaluated the effect of heating on the physicochemical properties of BC Sealer ion+ (BC), EndoSequence BC Sealer HiFlow (HF), and NeoSEALER EZFlo (NE).
Methods:
Samples were divided into heated (H) and unheated (NH) groups, with the H-group subjected to 100°C for 1 minute. Flow, setting time, and solubility were evaluated according to ISO and ANSI/ADA standards. Calcium release was measured using inductively coupled plasma mass spectrometry, as well as the magnesium release by BC sealer. Chemical composition was analyzed using Energy-Dispersive X-ray Spectroscopy, and pH was measured after 3, 24, 48, and 168 hours in distilled water. Data were analyzed with ANOVA and Tukey tests (P < .05).
Results:
Heating significantly increased the initial setting time of BC and the flow of NE (P < .05). Solubility did not meet ADA standards and was not affected by heating, as well as the calcium release (P > .05). No magnesium was detected in the BC solution. Chemical differences were observed between the H and NH groups. All sealers presented alkaline pH at all-time points, which was not influenced by heating.
Conclusion:
In conclusion, heating altered specific properties-initial setting time of BC and flow of NE-without affecting solubility, calcium release, or pH.
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