Landshut/Cologne (Germany) March 07, 2013 – Glass powders provide dental fillings likes composites and similar material mixtures with outstanding stability and a very attractive appearance. SCHOTT will launch a special glass that exhibits particularly high chemical stability at the International Dental Show (IDS). It will make dental fillings last even longer and withstand all types of acidic and alkaline attacks that are experienced during the ingestion of food.
Today, dental composites are the material of choice when it comes to aesthetic tooth restoration. The stability and durability of the versatile glass-polymer mixture has constantly been improved since it was first introduced to the market more than 40 years ago. By expanding its range of dental glass powders, the international technology group SCHOTT has actively contributed to this development, as composite fillings consist of up to 80 percent high-purity glass.
The latest development is “DentalGlass Resist,” a new glass that belongs to the chemical resistance class 1. Tests involving acids, alkalic solutions and water show how this glass is literally invulnerable to attack. In fact, it is even more resistant than borosilicate glass, which is often used in various chemical laboratory applications. For this reason, this inert material for use in extremely durable dental fillings effectively resists vinegar, fruit juices or acidic oral flora – the surface of the filling remains in its original condition.
For faster curing fillings
Thanks to its high resistance to acids, this glass is also ideally suited for use in resin-reinforced glass-ionomer cements. These innovative systems normally contain an acidic formula. They cure both chemically and with the help of UV light in combination with the glass powder base. This enables them to be applied more quickly in layers at the dentist’s office. Furthermore, more fluoride can be added to the filling to prevent the development of secondary caries.
Finely ground, this special glass ensures that dental composites and resin-reinforced glass-ionomer cements resemble natural dental enamel very closely in terms of both their mechanical properties and their appearance. “DentalGlass Resist” comes with refractive indexes of 1.53 nd and 1.55 nd and is available in all standard grain sizes. In addition, fine pigment shades allow for the color of the fillings to be adjusted to match the respective tooth just perfectly, therefore they are nearly invisible.
Broad portfolio of dental glasses
The expectations of patients, dentists and health insurance companies in respect to filling materials vary considerably and are quite high. For this reason, SCHOTT invests a great deal of resources in research and in helping companies that manufacture filling materials to develop even higher-quality products. Depending on the polymer used, customers today can choose from approximately twenty different types of glasses with refractive indexes of between 1.47 nd and 1.83 nd, including several glasses that even offer enhanced radiopacity.
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