Barium glass powder, as a key filler for dental materials, primarily contains:Barium oxide(BaO) and various other oxides, meticulously prepared through a specific process. It boasts high hardness, which significantly enhances the wear resistance of dental materials containing barium glass powder, enabling them to withstand long-term chewing wear and effectively extend the lifespan of dental prosthetics and fillings. For instance, in the manufacturing of full-mouth dentures, the high hardness of barium glass powder strengthens the denture's surface against wear, ensuring it remains undamaged and functional during everyday use. Additionally, barium glass powder has a lower coefficient of thermal expansion, similar to that of human teeth. This means that when the oral temperature changes, the stress difference between dental repair materials containing barium glass powder and natural teeth due to thermal expansion and contraction is minimal, reducing microleakage between the repair and tooth tissues, improving the stability of the repair, and lowering the risk of secondary caries.

In terms of optical properties, barium glass powder boasts an ideal refractive index, enhancing the optical effects of dental materials. When used for anterior dental aesthetic repairs, it allows the restored teeth to closely resemble natural teeth in terms of color, transparency, and luster, achieving a naturally aesthetic repair outcome that meets patients' pursuit of dental aesthetics. Moreover, barium glass powder is chemically stable, effectively resisting the complex acidic and alkaline environments and microbial erosion within the oral cavity. In the oral environment, food residue fermentation produces acidic substances, and saliva also has a certain pH level. The chemical stability of barium glass powder ensures that dental repair materials maintain their performance stability over the long term in such an environment, preventing issues like dissolution and corrosion, and ensuring the longevity of the repair effects.