Structural evidences of the microfilled composites

✍ Scribed by Lambrechts, Paul ;Vanherle, Guido

• Book ID: 102871823
• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 861 KB
• Volume: 17
• Category: Article
• ISSN: 0021-9304
• DOI: 10.1002/jbm.820170204

✦ Synopsis

The new composite concept of microfilled composites has certain advantages, such as polishabilitv, permanent smoothness, and often at the filler-matrix interface. In vim, there is still a certain preferential wear of the resin matrix. In Estic Microfill. rear weak , I high abrasion resistance. In the mouth, however, these new materials are not perfect and they often fail in stress-bearing restorations. In the present study, the weak links and imperfections of tHese materials are determined by means of direct and indirect SEM techniques. The chemical adhesion between polymer blocks and polymer matrix is questionable; fractures occur most zones with starlike condensations are observed, which could be related to a certain incompatibility of its composing resins a n d / o r to incomplete and inhomogeneous polymerization. In a fractured Isopast restoration, the polymer blocks are clearly revealed, scattered in a three-dimensional polymerized matrix network.