Sažetak sa skupa

The Clinical Use of Fiber- Reinforced Composite

Božidar Pavelić

Sažetak

Fiber reinforcement has been discussed in the dental literature since the early 1960s, althogh the more recent availability of commercial products is only now leading to recognition and general clinical use. Fiber-reinforced composite can be described by fiber type and fiber orientation, in addition to the presence or abscence of preimpregantion with a resin. Polyethylene, glass, kevlar and carbon fibers have all been used in either unidirectional or woven fiber orientations. The factors affecting the strength of fiber-reinforced composite are orientation of fibers, quantity of fibers, impregnation of fibers with the matrix polymer, adhesion of fiber to the matrix polymer, properties of fibers vs. properties of matrix polymer.In
dental reconstructions, undirectional and bi- or multidirectional
fiber orientation is used. Fiber reinforcement is only successful is the loading force can be transferred from the matrix to the fiber. In the case of voids between the matrix and the fiber, the load-bearing capacity of fiberreinforced composite decreases. Poorly impregnated fibers cause another proble: increase in water absorbtion, which
reduces the mechanical properties, and oxygen reserves, which inhibits radical polymerization of the polymer matrix and increases the residual monomer content which can lead to irritant reactions in the oral mucosa. A new fiber-reinforced composite provides the potential for fabrication of splints, metal-free, ceramic-free prosthesis with potential for long-term durability and excellent esthetics.

Ključne riječi

Hrčak ID:

3465

URI

https://hrcak.srce.hr/3465

Datum izdavanja:

15.9.2003.

Podaci na drugim jezicima: hrvatski

Posjeta: 2.088 *