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Researchers from Ain Shams University in Cairo, Egypt, have conducted a study on the luminescence properties of highly beta-sensitive lithium silicate systems. The study found that these systems exhibit promising thermoluminescence properties, making them suitable for applications such as radiotherapy and environmental monitoring. The research, which has been peer-reviewed, highlights the potential of these systems in various fields due to their sensitivity to beta radiation. [Extracted from the article]

A recent study conducted by researchers at Alexandria University examined the fracture resistance of different types of pressable glass-ceramics used for partial coverage restorations on upper premolars. The study compared the fracture resistance of pressable zirconia-reinforced lithium silicate with pressable lithium disilicate ceramic and evaluated the optimal preparation design for partial coverage. The results showed that zirconia-reinforced lithium silicate exhibited greater resistance to fracture compared to lithium disilicate, suggesting it could be a potential substitute for partial coverage restorations. Additionally, the overlay preparation design showed superior fracture resistance compared to the vonlay preparation design. [Extracted from the article]

A study conducted by Antalya Bilim University in Turkey examined the effect of various factors on the color of CAD-CAM restorative materials used in dentistry. The study looked at the impact of an immune-boosting beverage, an energy beverage, hydrogen peroxide, polishing methods, and dental prophylaxis paste on the color of the materials. The researchers found that professional dental prophylaxis was more effective than the energy beverage in restoring color to the materials. This research provides valuable insights for dental professionals and patients regarding the impact of different factors on the color of restorative materials. [Extracted from the article]

A recent study conducted at Tel Aviv University in Israel examined the influence of three different self-adhesive resin cements on the marginal adaptation of zirconia-reinforced lithium silicate (ZLS) single crowns. The researchers evaluated the marginal gap using scanning electron microscopy and found that all three self-adhesive resin cements produced clinically acceptable results. However, the group using G-cem ONE exhibited the lowest marginal gap. This research suggests that all three self-adhesive resin cements can be used in everyday dentistry for ZLS single crowns. [Extracted from the article]

A recent study conducted by researchers at the National Institute of Technology Warangal in Telangana, India, has explored the efficacy of gallium ions on the structural, biological, and antimicrobial activity of mesoporous lithium silicate bioactive glasses for tissue engineering. The study found that gallium-incorporated bioactive glass nanoparticles showed promise in the repair and regeneration of hard and soft tissues due to their multifunctional biological properties. The incorporation of gallium in the nanoparticles enhanced the formation of hydroxyapatite, a key component of bone tissue, and exhibited notable antimicrobial effects against bacteria. The findings suggest that gallium-incorporated bioactive glass nanoparticles have the potential to expedite the healing of bone tissue injuries in biomedical applications. [Extracted from the article]

A recent study conducted at Tel Aviv University compared the impact of closed and open computer-aided design/computer-aided manufacturing (CAD/CAM) systems on the marginal gap of zirconia-reinforced lithium silicate (ZLS) ceramic crowns used in dentistry. The study found that both closed systems (Primescan with CEREC software) and open systems (Trios 4 with EXOCAD software) can achieve an acceptable marginal gap for ZLS crowns. The researchers also found a significant difference in marginal gap when using different types of cement. This study provides valuable insights for dental professionals using CAD/CAM systems in their practice. [Extracted from the article]

A study conducted by the Chinese University of Hong Kong has found that increasing the P2O5 content in lithium silicate (LS) glass ceramics enhances their bioactivity. The researchers discovered that increasing the P2O5 content promoted phase transformation and the formation of Li3PO4, which improved cell proliferation, cell differentiation, and mineralization of the glass ceramics. The study suggests that glass ceramics with a higher P2O5 content may be suitable for orthopedic applications. The research was funded by National Key Research and Development Projects and the Fundamental Research Funds for the Central Universities. [Extracted from the article]

A recent study conducted by researchers at the University of Extremadura in Badajoz, Spain, examined the effects of post-processing heat treatment on zirconia-reinforced lithium silicate (ZLS) dental materials. The study found that the heat treatment did not affect the mechanical properties of the material, such as elastic modulus and hardness, but did enhance its resistance to contact damage and crack initiation. This improvement was attributed to the refinement of flaws achieved through the heat treatment. The findings have implications for prosthetic dentistry. [Extracted from the article]

A recent study conducted by researchers at a British university investigated the effects of two different intraoral polishing methods on zirconia-reinforced lithium silicate ceramic after ultrasonic scaling. The study found that both polishing systems significantly reduced the surface roughness of the ceramic, as well as decreased color change and bacterial accumulation. These findings suggest that intraoral polishing techniques can improve the surface quality of restorations and reduce staining and bacterial growth. The study was published in the European Journal of Dentistry and more information can be obtained from the researchers at the British University in Cairo, Egypt. [Extracted from the article]

A recent study conducted at Tel Aviv University compared the marginal gap adaptation of zirconia-reinforced lithium silicate (ZLS) ceramic crowns before and after crystallization. The study used computer-aided design and manufacturing (CAD-CAM) to produce the crowns and evaluated the marginal gap using a scanning electron microscope (SEM). The results showed that after crystallization, there was a significantly higher marginal gap in all four surfaces of the crowns. However, both pre-crystallization and post-crystallization groups had marginal gaps within the clinically accepted threshold. The study suggests that post-crystallization may improve mechanical properties but increase the marginal gap. [Extracted from the article]

A recent study conducted by researchers at Islamic Azad University in Tehran, Iran compared the fracture resistance and marginal adaptation of endocrowns made with two different types of ceramics using CAD/CAM technology. The study found that the zirconia-reinforced lithium silicate (ZLS) endocrowns had higher fracture resistance and superior marginal adaptation compared to the lithium disilicate (LDS) endocrowns. The vertical marginal gap was also smaller in the ZLS endocrowns. Overall, both types of endocrowns showed acceptable vertical marginal adaptation. This research provides valuable insights for dentistry professionals and may inform future advancements in dental materials and technology. [Extracted from the article]

Researchers from Chonnam National University in Gwangju, South Korea have developed a new method for 3D printing transparent ceramic dental prostheses using lithium silicate. The study describes the synthesis of lithium silicate powder using the sol-gel method, as well as the evaluation of its properties and the optimization of the printing and sintering process. The researchers found that a longer sintering holding time had a positive effect on the characteristics of the specimens. This research provides valuable insights into the potential of 3D printing in dentistry and could lead to improved dental prostheses with optimal translucency. [Extracted from the article]

A study conducted in Campinas, Brazil, investigated a novel glass-ceramic material called Bioactive LD for bone tissue engineering applications. The glass-ceramic showed a refined microstructure and comparable cell viability and proliferation to a commercial glass-ceramic. It exhibited higher alkaline phosphatase activity and promoted mineralization matrix production, indicating enhanced stimulation of osteoblastic cells. The results suggest that Bioactive LD has potential for bone regeneration and improved bone integration properties. The study was peer-reviewed and published in Materials Chemistry and Physics. [Extracted from the article]

A recent study conducted by researchers at Iuliu Hatieganu University of Medicine and Pharmacy in Cluj Napoca, Romania, explores the use of zirconia-reinforced lithium silicate (ZLS) ceramic in dentistry. The study aims to provide a comprehensive understanding of the material's optical and mechanical properties, as well as its clinical outcomes and cementation procedures. The research concludes that ZLS ceramic offers increased mechanical resistance but may compromise aesthetic appearance due to its translucency. Factors such as material thickness, underlying tooth structure color, and resin cement shade influence the final shade and appearance of ZLS restorations. Various methods, including acid etching and sandblasting, are commonly used to prepare ZLS restoration surfaces for bonding procedures. [Extracted from the article]

For more information on this research see: Structural Impact of Niobium Oxide On Lithium Silicate Glasses: Results From Advanced Interaction-selective Solid-state Nuclear Magnetic Resonance and Raman Spectroscopy. Keywords: Sao Carlos; Brazil; South America; Chemicals and Chemistry; Diagnostics and Screening; Health and Medicine; Minerals; Niobium; Nuclear Magnetic Resonance; Silicates; Silicic Acid; Transition Elements EN Sao Carlos Brazil South America Chemicals and Chemistry Diagnostics and Screening Health and Medicine Minerals Niobium Nuclear Magnetic Resonance Silicates Silicic Acid Transition Elements 1947 1947 1 08/21/23 20230825 NES 230825 2023 AUG 25 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Week -- Investigators publish new report on Chemicals and Chemistry. [Extracted from the article]

The article focuses on a study which aims at describing the reasons which cause blistering in the coating of a concrete floor. In the study, lithium silicate was applied in low-permeance floor coating system on a concrete surface and identifies alkali-silica reaction (ASR) as the cause of blistering. It mentions that an analysis using electron dispersive spectroscopy and scanning electron microscopy (SEM) reveals that a residue of lithium silicate is an ASR byproduct.

The article offers information on the benefits of using lithium silicate densifiers for concrete. Reportedly, one main reason for using lithium densifiers is that application is quicker and easier compared to sodium silicates. A discussion on how silicates work, application and differences among silicate concrete hardeners is offered.

The article focuses on the use of PROSOCO's Consolideck lithium-silicate (LS) with LS Guard to address the concerns of the school officials at St. Matthew's Middle School in Rocky Mountain House, Alberta. It states that the maintenance department of the school wanted polished floors but without dust left over and thus, contacted Concrete by Design. Lorne Lemay, the school's assistant maintenance manager, notes that the difference is evident.

A response by Peter Wagner to a letter to the editor about his article "Lithium Silicate Densifiers" in the December 2008 issue is presented.