[The effect of woven glass fiber reinforced composites on the transverse strength of three denture base resins].
OBJECTIVE
This study evaluated the effect of woven glass fiber reinforced composite (FRC) on transverse strength of denture base materials.


METHODS
Three denture base resins (heat-activated resin, autopolymerizing resin and microwave-activated resin) and FRC (Vectris Frame, Ivoclar-Vivadent) were selected for the study. The FRC was light-cured and sandwiched in the middle of denture base resin and then the specimen was polymerized according to manufacturers' instructions in a gypsum mold with a cavity of 65 mm x 10 mm x 2.5 mm. Each specimen was immersed in 37 degrees C distilled water for 50 hours. The control group was without FRC. Ten specimens were fabricated for each group. The transverse strength test was performed on a universal testing machine at a crosshead speed of 5 mm/min.


RESULTS
The transverse strengths of all denture base resins reinforced with FRC were significantly higher than that of denture base resin bulk.


CONCLUSIONS
Within the limitation of the current study, the FRC has an effect upon reinforcement of denture base resin.
Mori
Nobuaki
N
Division of Removable Prosthodontics, Fukuoka Dental College, Fukuoka, 814-0193 Fukuoka. simizu@college.fdcnet.ac.jp
Shimizu
Hiroshi
H
Tsue
Fumitake
F
Obukuro
Motofumi
M
Kawaguchi
Minoru
M
Takahashi
Yutaka
Y