The effect of esthetic fibers on impact resistance of a conventional heat-cured denture base resin.
This study was conducted to observe the changes in impact resistance of a denture base resin reinforced with five types of fiber. E-glass, polyester, rayon, nylon 6, and nylon 6/6 fibers were cut into 2, 4, and 6 mm lengths and added into the resin at a concentration of 3% by weight. Five test specimens for each formulation, as well as control specimens without fiber, were prepared using a mold including a V-shaped notch with 55 x 10 x10 mm dimensions. Impact tests were carried out using a Charpy-type tester. Additionally, surfaces of the impact sections were observed under a scanning electron microscope (SEM). Results indicated that impact energy tended to increase with fiber length, and that the highest value was recorded for rayon fiber-reinforced specimens of 6 mm length. E-glass fiber reinforcement produced relatively stable, high values for each length, whereby good interfacial strength between polymer matrix and glass fibers was confirmed by SEM analysis.
Doğan
Orhan Murat
OM
Department of Prosthodontics, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
Bolayir
Giray
G
Keskin
Selda
S
Doğan
Arife
A
Bek
Bülent
B
Boztuğ
Ali
A
D000180:Acrylic Resins / Q000737:chemistry*; D002482:Cellulose; D003799:Dental Stress Analysis; D003819:Denture Bases; D004548:Elasticity; D004955:Esthetics, Dental; D005898:Glass; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009757:Nylons; D018583:Pliability
D000180:Acrylic Resins; D009757:Nylons; C009753:fiberglass; D002482:Cellulose; C012024:rayon, purified