Mechanochemically synthesized leucite based bioactive glass ceramic composite for dental veneering

Fesaghandis

Int J Applied Ceramic Tech

et al. 2018

K-Feldspar was used as a raw material for in situ synthesis of leucite particles by solid-state reaction method. Prior to synthesis of leucite, K-Feldspar was treated by oxalic acid (C 2 H 2 O 4 ) to eliminate Fe content. The parameters affecting the structure and amount of Fe in K-Feldspar was investigated to reach an optimal leaching condition. Next, kasilite removal was studied by introducing CaF 2 to the composition of dental porcelain. To synthesis leucite, the prepared materials were heated up to 1450°C for 3 hours until fusion phenomena occurred, then cooled down to 865°C to permit the leucite crystals nucleate and grow. To find out the chemical composition of powder, XRF, EDX, and Atomic absorption spectroscopy were used. Fourier Transform Infrared Spectroscopy and X-Ray Diffractometer and Scanning Electron Microscopy were employed to study the structure of mineral. Spectrophotometry was chosen to analyze whiteness index of powder after acid treatment. Differential Thermal Analysis was employed to determine the crystallization temperature. Results indicated a dramatic decrease in Fe content (0.018%wt) by employing C 2 H 2 O 4 as a leachant at 50°C. In addition, whiteness index of 91% was achieved through this procedure for raw feldspar. Finally, 1% wt of CaF 2 prevented formation of kalsilite.

Section: Introductionmentioning

confidence: 62%

In situ synthesis of leucite‐based feldspathic dental porcelain with minor kalsilite and Fe₂O₃ impurities

Fesaghandis

Int J Applied Ceramic Tech

et al. 2018

Int J of Appl Glass Sci

“…Alumina is biocompatible and, has good mechanical properties as well as high hardness values. Inclusion of crystalline materials like alumina into glass results in improved glass toughness and strength 11 . Furthermore, alumina is generally considered as a glass structure stabilizer due to the non‐bridging oxygen elimination 12 …”

Section: Introductionmentioning

confidence: 99%

Investigation of alumina doped 45S5 glass as a bioactive filler for experimental dental composites

Elalmış

İkizler

Depren

et al. 2021

This study aimed to investigate the effects of inclusion of Al 2 O 3 -doped bioactive glass (BG) and silane treatment on physical properties and bioactivity behavior of resin-based experimental dental composites (EDCs). Melt-derived 45S5 BG and alumina doped 45S5 BG were prepared and incorporated into EDCs with and without silanization. EDCs prepared were subjected to three-point bending, microhardness, water sorption (WS), solubility (S), and bioactivity tests. Using non-silanized Al 2 O 3doped BG in EDCs resulted in improved flexural strength (FS), flexural modulus (FM), and microhardness and decreased bioactivity compared to EDCs containing non-silanized BG. There was no significant difference (p < 0.05) between WS and S results of non-silanized glass containing EDCs. Using silanized BG and Al 2 O 3 -doped BG resulted in improved FS and FM, decreased WS, S, and bioactivity. Addition of Al 2 O 3 -doped BG as a possible bioactive filler to EDCs improved mechanical performance while slightly decreasing bioactivity compared to BG containing EDCs.

“…Cell Culture: MCF7 (ATCC® HTB‐22™) cells were grown in RPMI‐1640 supplemented with 10 % FBS at 37 °C and 5 % CO 2 . Cells were plated in a 48 or 96 well culture plate and allowed to adhere for 24 h before experimentation …”

Section: Methodsmentioning

confidence: 99%

“…Cells were plated in a 48 or 96 well culture plate and allowed to adhere for 24 h before experimentation. [38] Cell Viability Assay: The methyl thiazolyltetrazolium (MTT) assay was used to measure the cytotoxicity of R1 in MCF-7 cells. [39] MCF-7 cells were seeded in a 96-well cell culture plate.…”

Section: Synthesis Of Chemosensor R1mentioning

confidence: 99%

Template‐Assisted Regioselective Identification of Metal Ions on Coumarin‐Furan Conjugated Chemosensors: AIEE Effect and Photo‐Switching pH Indicator by ICT

2020

Self Cite

A coumarin-furan conjugated Schiff base chemosensor (R1) of straightforward design showed an excellent aggregation-induced emission enhancement effect in ACN-H 2 O mixtures of different ratios, which was confirmed by field emission scanning electron microscopy (FESEM) and supported by Dynamic Light Scattering (DLS). R1 identified three metal ions (Pb 2+ , Hg 2+ and Cu 2+) in colorimetric and fluorometric techniques with an intramolecular charge transfer (ICT) off-on mech-[a] Dr. A