The effect of esthetic fibers on the flow properties of an acrylic resin denture base material.
OBJECTIVE
This study was conducted to measure the effect of viscose rayon esthetic fibers on the flow properties of an acrylic resin denture base material.


METHODS
Two testing methods using a needle penetrometer and an oscillating rheometer were employed on weighed proportions (0.1%, 0.2%, 0.8%, and 0.3%) of fiber.


RESULTS
The results show that the fibers affect the flow properties of the polymer/monomer mix. Increasing the percentage of fibers decreases the flow of the material and reduces the doughing time. With increasing amounts of fiber, a rapid increase in the viscosity occurs with a corresponding adverse effect on flow properties.


CONCLUSIONS
It is concluded that these properties are important for the successful handling of acrylic materials since they can influence the accuracy and quality of the molded denture.
Katsikas
N G
NG
Department of Prosthodontics and Periodontology, University of Bristol Dental School, England.
Huggett
R
R
Harrison
A
A
Vowles
R W
RW
D000180:Acrylic Resins / Q000737:chemistry*; D000704:Analysis of Variance; D002482:Cellulose / Q000737:chemistry; D003819:Denture Bases; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D012212:Rheology; D014783:Viscosity
D000180:Acrylic Resins; D008768:Methylmethacrylates; D002482:Cellulose; C012024:rayon, purified