In a statement, dental technician Annette von Hajmasy (Erstätt) writes about her experience with composites in everyday laboratory work. Material science explanations regarding the composition of dental composites, as well as an examination of three different veneering composites, can be found here: Veneering Composites: "Composition, Properties and the Examination of Three Different Products".
Statement: ZTM Annette von Hajmasy
“Modern composites have become a real alternative for me. The elasticity of the material and thus the buffer function in the mouth are important, for example in implant prosthetics. Chewing pressure overload, chips or breaks are avoided. In addition, the polishability is first-class and the plaque resistance and abrasion resistance are low. As a user, I inform myself about the properties and materials science of the respective material. For example, the filler content influences the applicability; grain size and distribution are crucial. The higher the filler content, the higher the modulus of elasticity and the more brittle the material is. I create complex restorations using the press-on technique (picture series). Advantages: exact implementation of the diagnostics (wax-up), high homogeneity and quality of the material, reproducible results.”
Fabrication of a composite restoration using the overpress technique. The validated setup is placed in a flask, and the contour (clear silicone) is filled with tooth-colored composite. Curing takes place in a light oven ( polymerization unit ) [refer to manufacturer's instructions]. Both the red and white esthetics are achieved with composite. The zirconia framework, over which the composite was overpressed, is visible from the basal view. The excellent optical properties of the composite are evident in transmitted light.
Comparison: pasty composite (left) and flow composite (right)
Manual layering of a composite crown. Individual characteristics can be inserted, for example, with a fine needle.
Author: ZTM Annette v. Hajmasy (Erlstätt)
ADDITIONAL INFORMATION
Veneering composites: composition, properties, and an examination of three different products. Article