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SCHOTT North America
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Inert Dental Glass
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To fulfill patients’ demand for highly aesthetic tooth restoration, modern dentistry primarily uses so-called composite fillings. Inert dental glasses are a major component of these fillings ensuring strength and durability combined with an excellent aesthetic appearance. Due to their composition, the chemical reactivity of these materials is low (“inert”). This sets them apart from reactive dental glasses, which are used in glass-ionomer cements.
Product Description
Combining more than ten different material compositions (glass types) with over a dozen different grain sizes in silanated and unsilanated quality, SCHOTT offers several hundred product combinations. This enables dental composite manufacturers to chose a tailor made solution for any dental composite.
The composition of inert dental glasses has been optimized for the following criteria:
- Refractive index exactly matched to the most commonly used dental resins
- A choice of Barium or Strontium-based glasses to achieve a radio-opacity between 210 and 400 % (according to ISO 4049)
- Fluoride containing as option
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Product Advantages
Excellent aesthetic appearance combined with strength, durability and ease of use are the main standards for highest quality composite filling materials.
SCHOTT inert dental glasses enable dental composite manufacturers to fulfil these requirements exactly:
- Tightly controlled composition ensures consistent physical and chemical properties
- SCHOTT's patented UF ultrafine technology: Contamination free grinding down to particle sizes of only 0.4 µm (d50) offers excellent polishability, high load factors, and transparency of the composite at the same time.
- Largest range in the market including optional silanation service
- Fast, reliable and flexible service from sampling to serial quantities
Applications
As the name indicates, several components are used to manufacture a dental composite:
- SCHOTT inert dental glass as an inorganic filler makes up for 70 – 80% in weight.
- To allow bonding of the non-reactive dental glass to the other components, the glass particles are coated with a silane layer.
- The silanated glass powder is mixed with an organic resin as well as additional ingredients such as color pigments to form the composite material in the form of a viscous paste.
The dentist applies the composite into the cavity layer by layer and cures it with a special UV-light. This induces the components of the composite to react with each other and to form a hard and durable matrix. A final polishing step ensures a smooth and appealing surface.
Technology
Drawing from more than 125 years of glass melting experience, SCHOTT melts all dental glasses in specially designed aggregates at our optical glass facility.
The raw glass is then ground into fine powder using different dry and wet grinding technologies including SCHOTT’s patented UF Ultrafine Technology.
Features / Specifications
Here are three easy steps to determine which SCHOTT inert dental glass is most suitable for a specific composite filling material:
Step 1: Choice of glass type
The glass type should be matched to the resin especially in terms of refractive index.
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Step 2: Choice of grain size
All standard grain sizes are listed in the following table.
Step 3: Choice of silanation
Delivery in already silanated form saves one process step. Different silane percentages are available depending on the grain size:
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Form of Supply and Product Packaging
Our standard packing consists of sealed PE-bags in cardboard drums. For alternative packing please contact us.
Quality Assurance
For more information on the different quality assurance programs, please click on our quality assurance processes page.
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Contact
Electronic Packaging
SCHOTT North America, Inc.
122 Charlton Street Southbridge, MA 01550 USA
 | +1 (508) 765-3370 |
 | +1 (508) 765-3377 |
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