Diametral tensile strength of novel fast-setting calcium silicate cement

Abstract

Novel fast-setting calcium silicate cement with fluoride (CSC) has been developed for potential applications in tooth crown. The aim of this study was to test the diametral tensile strength (DTS) of different CSC compositions in humid condition on day1, 28, and 180. We tested 'bond CSC' with 3.5% fluoride and no radiocontrast, 'CSC' with 3.5% fluoride and 10% radiocontrast, 'ultrafast CSC' with 3.5% fluoride and 20% radiocontrast, 'high fluoride CSC' with 15% fluoride and 25% radiocontrast, Biodentine, and MTA. We filled the cements after mixing to cylindrical molds. Specimens were stored in >95% humidity. DTS was measured at each time point. CSC compositions had statistically higher DTS compared to MTA and Biodentine on day1. Bond CSC showed higher DTS versus all cements, except CSC, at all time points. DTS of all cements, except Biodentine, significantly increased in humid condition on day28 and day180 compared to day1.

Effect of phytic acid on the setting times and tensile strengths of calcium silicate‐based cements

“…The second part of this study investigated the effect of phytic acid on diametral tensile strength because attempts to shorten setting time should not alter the physical properties of the biomaterial. The diametral tensile strength test is an accepted and commonly used method to measure the tensile strength of dental materials and is used to analyse the changes in the mechanical properties of brittle materials, such as calcium silicate-based cements, after mixing with different chemicals (28,29). Similar to that in a previous work (28), in this work, Biodentine ® presented higher diametral tensile strength than MTA.…”

“…The diametral tensile strength test is an accepted and commonly used method to measure the tensile strength of dental materials and is used to analyse the changes in the mechanical properties of brittle materials, such as calcium silicate-based cements, after mixing with different chemicals (28,29). The diametral tensile strength test is an accepted and commonly used method to measure the tensile strength of dental materials and is used to analyse the changes in the mechanical properties of brittle materials, such as calcium silicate-based cements, after mixing with different chemicals (28,29).…”

“…Similar to that in a previous work (28), in this work, Biodentine ® presented higher diametral tensile strength than MTA. A high water/powder ratio increases porosity and solubility, which in turn compromise the mechanical characteristics of the material (29). The high tensile strength of Biodentine ® could also be ascribed to its low water/powder ratio.…”

Bond strength between dentine and a novel fast‐setting calcium silicate cement with fluoride

“…The linear regression model suggested a bond‐strength increase as a function of time only for Protooth; no such increase was observed for the other materials tested. Previously, we observed that Protooth cement possessed improved diametral tensile strength in comparison with ProRoot MTA . Improved tensile strength or mechanical properties may explain the better bonding ability of the new cement.…”

“…To date, the fast setting time, improved mechanical properties , apatite‐forming or mineralizing ability , biocompatibility , acceptable clinical results , interfacial gap closure capability , and superior long‐term bonding to dentine, as observed in this study, support further testing on Protooth for potential applications in the tooth crown. Accordingly, Protooth may be a candidate for pulp protection, treatment of endodontic complications, caries sealing, and post or crown cementation.…”