Inert Dental Glass

Product Description

Inert dental glasses are a major component of composite fillings in modern dentistry. Their utilization in tooth restoration provides strength and durability, combined with an excellent aesthetic appearance. Due to their composition, the chemical reactivity of these materials is low (“inert”).

Customers can choose from several hundred product combinations, which are generated from more than ten different material compositions (glass types) with over a dozen different grain sizes.

As an additional service we can supply our inert dental glasses silanated. A silane layer increases the wettability of the glass by the resin and allows the bonding of the non-reactive dental glass to the resin components of your material.

This broad range of options enables dental composite manufacturers to choose a tailor made solution for any dental composite.


Excellent aesthetic appearance combined with strength, durability and ease of use are the main standards for highest quality composite filling materials.

SCHOTT‘s inert dental glasses enable dental composite manufacturers to choose tailor made solutions:

Largest variety in the market:

  • A broad choice of glass formulations
  • Optional silanation service
  • Optional fluoride content

Consistent physical and chemical properties:
  • Tightly controlled composition of glasses

Outstanding transparency:
  • Refractive index exactly matched to the most commonly used dental resins, varying from 1.50 to 1.60

Broad range of grain sizes available:
from coarse K-grinds down to submicron SCHOTT NanoFine®
  • All inert dental glasses are available in coarse SCHOTT® K-grinds, SM grinds as well as UltraFine quality, with a mean particle size down to 0.4 μm
  • Our dental glass types GM27884 and G018-308 are additionally available in NanoFine® NF180: special submicron grinds
  • Smallest grain sizes with a narrow distribution and minimum abrasion levels provide maximum freedom in adjusting colour and transparency Low shrinkage and excellent polishability

Fast, reliable and flexible service

  • From sampling to serial quantities



SCHOTT‘s inert dental glasses are used as an inorganic filler for dental composites and make up for 70-80% in weight, thus being the key ingredient.

Glass particles can be coated with a silane layer to allow bonding and mixing with an organic resin as well as additional ingredients, e.g. color pigments. Therefore, composite material is formed as a viscous paste, which is applied by the dentist into the cavity layer by layer, cured with a special UV-light and polished to ensure a smooth and appealing surface.

Technical Details


With more than 130 years of experience, SCHOTT melts all dental glasses in specially designed aggregates to produce glass of optical quality. The choice of melting technology depends on the composition and quality requirements of the individual glass type.

Depending on the desired grain size and distribution, different dry and wet grinding technologies are used to grind the raw glass into fine powder.

Features / Specifications

For further information on our available inert dental glasses, please go to the downloads tab. 

Form of Supply and Product Packaging

Our standard packaging consists of sealed PE-bags in cardboard drums. For alternative packaging please contact us.


For more information on the different quality assurance programs, please click on our quality assurance processes page.
SCHOTT uses Cookies on this Website to enhance the user experience and provide the best possible Service. By continuing to browse the Website, you consent to our use of Cookies.