Feldspar Flours

MICROSPAR® products are based on micro fine feldspar flours. They have been especially developed for uv-cured dental composites and are available with and without surface-treatement. Key parameters are good chemical resistance, purity and high transparency. An almost invisible repair of teeth is possible. In addition, the production of artificial teeth is possible with this special filler. MICROSPAR® 1351 increases the mechanical strength and radio-opacity can be achieved (Yb-F). The workability of the composite and the polishing behavior are excellent.

Certainly these products can be used in other UV-cured composites as well.


    • Micro fine feldspar flours with a d50 of 0.3 - 2 microns.

    • Methacryl silane surface treatment available.

    • High purity and transparency.


    • Better flexural strength and E-modulus when compared to methacrylate resins for dental fillers and composites.

    • Low shade adjustments required for dental fillers and composites. Almost invisible repair of teeth is possible.

    • Increases radio opacity that can be achieved (Yb-F).

    • Can be highly loaded whilst maintaining UV transparency.

    • Excellent workability and polishing of the dental composite.

    • Matting and scrub resistance in decorative coatings.

Typical Applications

    • Dental fillers and composites.

    • Clear lacquers.

    • Architectural coatings.

    • Porcelain.

    • UV-cured 3D printing resins.

Featured grades with technical datasheets

A brief overview of the key grades is given below. You will find the Technical Datasheets (TDS) available for download. If you are looking for a Safety Datasheet (SDS) or Product Safety Information (PSI) then please get in touch by phone or via the contact buttons at the top of the page.

Should you not find what you are looking for here then please note that we have further grades available besides these. One of our Technical Sales team will be happy to help. All of the sales team are technically qualified and will be able to advise you on which product to choose. You can either call us, email us or fill in a quick form at the top of the page to get us to call you (Request a Callback). A sample can be requested via the button at the top of the page as well. Please note that by providing us with your contact details, you are agreeing for us to potentially contact you.

Related brochures & technical literature

You will find some of the key product brochures available for download below. There are more brochures available upon request. If you would like to discuss your enquiry further then please get in contact by phone or by filling in the "Request a Callback" form at the top of the page. Someone from the technical sales team will then call you within 24 hours, to discuss your project further.

MICROSPAR® 1351 Products in Dental Composites

MICROSPAR is used to improve flexural strength and E-modulus in the formulation of UV cured dental composites.

MICROSPAR® 1351 Products in Dental Composites Brochure /