Сравнительная характеристика износостойкости современных полимерных композитов

In the past years one of the most common failure of resin-based material restorations was the low wear resistance, which led to loss of anatomical form. New generation flowable composite resin materials are popular among dentists because of their easy handling but their wear resistance constitutes a clinical concern. The aim of the present study was to compare the wear resistance of the resin composite materials when as antagonists different materials, steatite and enamel were used. 9 contemporary dental materials including both condensable composites and flowable composites were compared. The specimens of each material were subjected to two-body wear tests, using a chewing simulator. The wear region of each material was examined under profilometer, measuring the vertical loss (μm) and the volume loss (mm3) of the materials. Additionally, SEM analysis and stereomicroscopy was performed to assess surfaces irregularities. The majority of composites demonstrated a good wear resistance. Different surface state of the composites and volume loss values were measured among composites when enamel and steatite balls were used as antagonists.