<i>In vitro</i> microleakage of six different dental materials as intraorifice barriers in endodontically treated teeth

Abstract

The aim of this study was to compare the coronal sealing ability of six different dental materials: Three MTA-based cements and three established restorative materials by in vitro dye penetration method. For in vitro infiltration experiments, seventy extracted single-rooted human teeth were used. After crowns of teeth were reduced, root canals were prepared, and filled with gutta-percha cone. Teeth were randomly divided into 6 groups with 10 teeth per group. The orifice of each tooth was prepared to 3 mm depth and filled with the following materials: (I) ProRoot WMTA; (II) EndoCem Zr; (III) Angelus White; (IV) LuxaCore; (V) Fuji II LC; and (VI) Elite. After 5,000 cycles of thermocycling between 5°C and 55°C, dye penetration of each specimen was measured. The order of less dye infiltration of coronal filling materials was: ProRoot WMTA<LuxaCore, Angelus White<EndoCem Zr<Fuji II LC<Elite (p<0.05).

Biological efficacy of two mineral trioxide aggregate (MTA)-based materials in a canine model of pulpotomy

“…It has been reported that Endocem, the earlier pozzolan-based MTA material, has sealing ability comparable with that of ProRoot MTA 11) . In contrast, Endocem Zr was found to have less favorable sealing ability than other MTA-based materials in a dye penetration study 18) . However, the results of dye penetration studies do not necessarily reflect bacterial invasion 33) , and there are no reports on the mechanical properties of Endocem Zr.…”

“…According to the manufacturer's specifications, 43-46 wt% of Endocem Zr consists of zirconium oxide (Table 1) and this has been shown to have adequate radiopacity. However, a decreased amount of calcium silicate in cement indicates possible shortcomings in terms of calcium ion release 18,30) . Calcium ion release from Portland cement has been reported to decrease on addition of a radiopacifying agent 28,30) .…”

“…Therefore, the radiopacifier was replaced with zirconium oxide in the Endocem Zr formulation. Some authors have reported on the propensity for discoloration 10) , biocompatibility 12) , and physicochemical properties 17,18) of Endocem Zr, but clinical use of this new material needs to be supported by in vivo research.…”

A Systematic Review Comparing Mineral Trioxide Aggregate to Other Commercially Available Direct Pulp Capping Agents in Dogs

“…76,77 EMTA has been demonstrated to have a lower calcium ion concentration than PMTA. 75 EMTA's less favorable sealing ability and initial transient cytotoxicity, 78,79 Figure 1. Flowchart modified from the PRISMA 44 guidelines, demonstrating the process by which the search results were narrowed to the 9 articles included in this systematic review.…”

“…76,77 EMTA has been demonstrated to have a lower calcium ion concentration than PMTA. 75 EMTA’s less favorable sealing ability and initial transient cytotoxicity, 78,79 are proposed mechanisms for its poorer performance as compared to PMTA. 2…”