Dental glass powder price

Buyers must prioritize particle size distribution (D50), as it directly affects the film thickness and flowability of the final dental cement. For restorative applications, a particle size of 3-5 microns is standard, while luting agents require sub-micron particles for a precise fit. Additionally, verify the refractive index to ensure it matches the dental resin for optimal translucency and aesthetics.

The powder must have a controlled fluoride release rate to provide anti-caries benefits. Ensure the glass is radiopaque (usually through barium or strontium content) so that it is visible on X-rays. The acid-reactivity must be consistent to ensure predictable setting times when mixed with polyacrylic acid in Glass Ionomer Cements (GIC).

As a medical-grade material, the supplier must hold ISO 13485 certification for medical device quality management. The product itself should comply with ISO 9917-1 (Water-based cements) and possess CE Marking for the European market or FDA 510(k) clearance for the U.S. market to ensure biocompatibility and safety.

Standard Fluoro-Alumino-Silicate glass is cost-effective for general fillers. However, powders enriched with bioactive glass (45S5) or specialized nanofillers command a higher price due to their regenerative properties and superior mechanical strength. Bulk pricing is typically influenced by the purity of raw materials and the precision of the milling process.

Always request a Certificate of Analysis (CoA) for every batch to verify chemical composition. Before placing a bulk order, utilize Made-in-China.com's Secured Trading services and request a pre-shipment inspection by a third party like SGS or Intertek to ensure the powder is free from contaminants and meets the agreed-upon mesh size.

Focus on Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for tiered pricing based on annual volume rather than single shipments. Ask for free samples (50g-100g) to conduct laboratory setting-time tests. For long-term contracts, seek fixed-price agreements to hedge against fluctuations in the cost of raw rare-earth elements used for radiopacity.

Dental glass powder is highly hydroscopic (moisture-sensitive). Ensure the supplier uses vacuum-sealed aluminum foil bags and sturdy outer fiber drums. Shipping documents must clearly state 'Keep Dry' and 'Temperature Controlled' if the powder is pre-mixed with reactive components. Verify the HS Code (typically 3207.40) to ensure correct customs duty application.

Prioritize Audited Suppliers on Made-in-China.com who have undergone on-site factory inspections. Use Escrow-based payment methods where funds are only released upon confirmation of receipt and quality validation. Check the supplier's export history to see if they have experience navigating the medical regulatory requirements of your specific country.