Monomer conversion, biaxial flexural strength, apatite forming ability of experimental dual-cured and self-adhesive dental composites containing calcium phosphate and nisin

Abstract

The aim was to develop dual-cured, self-adhesive composites containing monocalcium phosphate monohydrate (MCPM, 8 or 4 wt%) and nisin (6 or 3 wt%) with added adhesive monomer. The effect of additives on monomer conversion (MC), biaxial flexural strength (BFS), dentin shear bond strength (SBS), and surface apatite formation were examined. All experimental composites showed lightactivated MC (70-75%) higher than the commercial self-adhesive composite (Vertise Flow; VF, 65%). The additives reduced BFS of the composites from 217 to 133 MPa. SBS of the experimental composites (2-6 MPa) was lower than that of VF (12 MPa). Rising MCPM level enabled apatite-like crystals precipitated on the surface of composites after immersion in simulated body fluid for 4 weeks. The additives showed negligible effect on MC and SBS. Rising level of additives reduced strength of the composites but the values were still higher than that required by the standard.

Effects of Different Application Times of Silver Diamine Fluoride on Mineral Precipitation in Demineralized Dentin

“…The post hoc power analysis was performed using G*Power version 3.1.9.6 (University of Dusseldorf, Dusseldorf, Germany). The effect size [32] of each experiment was calculated from the results obtained in the current study, which demonstrated that the sample size used in each test exhibited a power >0.95 at alpha = 0.05.…”

Monomer Conversion, Dimensional Stability, Biaxial Flexural Strength, Ion Release, and Cytotoxicity of Resin-Modified Glass Ionomer Cements Containing Methacrylate-Functionalized Polyacids and Spherical Pre-Reacted Glass Fillers

“…FTIR spectra for the region from 800 to 2000 cm −1 before and after curing were recorded. The degree of monomer conversion ( , %) was calculated using the following equation [ 27 ]: where and are the absorbance of the C–O peak (1320 cm −1 ) [ 28 ] above the background level at 1335 cm −1 before curing and after curing at time t, respectively.…”

“…The test was performed at 25 ± 1 • C. FTIR spectra for the region from 800 to 2000 cm −1 before and after curing were recorded. The degree of monomer conversion (D c , %) was calculated using the following equation [27]:…”

Effects of Silver Diamine Nitrate and Silver Diamine Fluoride on Dentin Remineralization and Cytotoxicity to Dental Pulp Cells: An In Vitro Study

“…A post hoc power analysis was performed using G*Power version 3.1.9.6 (University of Dusseldorf, Dusseldorf, Germany). The effect size [ 42 ] of each experiment was calculated from the results obtained from the previous study [ 26 ], demonstrating that the sample size used in each test exhibited power > 0.95 at alpha = 0.05.…”