Physicochemical properties, cytotoxicity and bioactivity of a ready-to-use bioceramic repair material.

The aim of this study was to evaluate the physicochemical properties, cytotoxicity and bioactivity of a ready-to-use bioceramic material, Bio-C Repair (Angelus), in comparison with White MTA (Angelus) and Biodentine (Septodont). The physicochemical properties of setting time, radiopacity, pH, solubility, dimensional and volumetric changes were evaluated. Biocompatibility and bioactivity were assessed in Saos-2 osteoblast cell cultures by the MTT assay 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide), Neutral Red (NR), Alizarin Red (ARS), and cell migration tests.

Physicochemical and biological properties of new tricalcium silicate-based repair material doped with fluoride ions and zirconium oxide as radiopacifier.

This study evaluated the physicochemical and biological properties of novel reparative materials composed of pure tricalcium silicate (Ca SiO ), Ca SiO doped with fluoride ions (Ca SiO -F) and their association with ZrO (Ca SiO  + ZrO , Ca SiO -F + ZrO ), in comparison with Biodentine (BIO). Setting time radiopacity, pH, solubility, and dimensional change were evaluated based on ISO 6876 Standard. Volumetric change and flow/filling were assessed by microcomputed tomography (micro-CT).

Effect of radiotherapy on the chemical composition of root dentin.

Background: The radiotherapy can directly affect the bond strength of the adhesive materials, interfering in the prognosis of restorative treatments, which may be caused by chemical changes in dentin structure.

Methods: Twenty inferior homologues premolars were distributed in 2 groups (in vitro study) (n = 10): nonirradiated and irradiated. The specimens were submitted to the analysis of phosphate (ν PO ;ν PO ;ν PO ), carbonate (ν CO ), amide I, CH , amide III, and amide I/III ratio by confocal Raman spectroscopy.