we are living in a changing world and every day we have the impression that the changes are happening even faster. The problem is that these changes are not always improvements. Sometimes, they involve some drawbacks. Specially in the dental field, we have seen that new systems try to simplify steps. However, they do not always represent improvements in the properties of the materials. The renaissance of Tetric Ceram in its new form Tetric-N Ceram is an improvement in all the important clinical properties a composite should have - a combination that rarely happens.
During the past few years, the amount of scientific information corroborating the success of composite restorations in indications that only a few years ago were "experimental" has grown dramatically. All these changes in the perception of the dental world towards composites are due mainly to the improvements in the adhesion and mechanical properties of new systems. Tetric-N Ceram is a nanohybrid composite. The nanoparticles impart the composite with important characteristics. If we analyze the history of composites, look at the problems they had in the beginning and the improvements that have been realized to date, we understand how much has been achieved. Below are some of the biggest improvements taking the example of Tetric-N Ceram:
1. Abrasion
The first macrofilled composites were clinically not successful because of their inadequate surface properties and poor wear resistance. Microfilled composites brought a breakthrough because they were the first materials to be sufficiently wear-resistant and which maintained an acceptable surface quality during clinical service. Hybrid composites represented a further step forward with respect to the mechanical properties of composite materials. Tetric-N Ceram with a mean particle size of <1 μm and nanoparticles <100 nm achieves higher standards in abrasion.
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发表于 2011-9-27 16:37:20
