Evaluation of physicochemical properties of root-end filling materials using conventional and Micro-CT tests

Abstract

Objective To evaluate solubility, dimensional stability, filling ability and volumetric change of root-end filling materials using conventional tests and new Micro-CT-based methods.Material and Methods 7 Results The results suggested correlated or complementary data between the proposed tests. At 7 days, BIO showed higher solubility and at 30 days, showed higher volumetric change in comparison with MTA (p<0.05). With regard to volumetric change, the tested materials were similar (p>0.05) at 7 days. At 30 days, they presented similar solubility. BIO and MTA showed higher dimensional stability than ZOE (p<0.05). ZOE and BIO showed higher filling ability (p<0.05).Conclusions ZOE presented a higher dimensional change, and BIO had greater solubility after 7 days. BIO presented filling ability and dimensional stability, but greater volumetric change than MTA after 30 days. Micro-CT can provide important data on the physicochemical properties of materials complementing conventional tests.

Mast cells and immunoexpression of FGF‐1 and Ki‐67 in rat subcutaneous tissue following the implantation of Biodentine and MTA Angelus

“…Moreover, the higher solubility exhibited by Biodentine (Torres et al . ) may explain the delay in collagen formation as well as the maintenance of the accentuated FGF‐1 immunoexpression and number of mast cells in the Biodentine group at 60 days. The calcium chloride present in Biodentine liquid also may partially explain this delay.…”

Micro-CT analysis of filling ability and porosity of root-end filling materials

“…In the present study, similar filling ability was observed for S26 and ZOE, and both presented higher values than MTA. Torres et al 2 observed that ZOE presented better filling ability than MTA. Dias et al 19 observed that the modification of a composite resin with small amounts of zinc oxide (ZnO) microparticles significantly inhibited the S. mutans growth on resin surface without significant alterations of its mechanical strength.…”

“…Microcomputed tomography (micro-CT) is a non-destructive tool used for different studies in Endodontics as analysis of root canal filling 1 , filling ability of the reparative materials 2 and the evaluation of interface material/dentin associated with different root canal filling techniques and materials 3 . Micro-CT is also used for evaluating the volumetric change in endodontic materials, with possible correlation with solubility 4 and dimensional change after immersion in distilled water 2 .…”

“…Micro-CT is also used for evaluating the volumetric change in endodontic materials, with possible correlation with solubility 4 and dimensional change after immersion in distilled water 2 .…”

“…Also, proper sealing may be related to complete filling of the cavity. Analyzing physicochemical (i.e solubility, pH, filling ability) and biological (i.e biocompatibility, bioactivity) characteristics to the root-end filling material may improve the success of the treatment 2,4,7,12 .…”