[Mechanical property analysis of polyethylene fiber reinforced polymethyl methacylate].
OBJECTIVE
To investigate if the Ribbond polyethylene fiber has the effect of reinforcing polymethyl methacylate.


METHODS
28 specimens were fabricated and divided into 3 groups: group of chemical-cured PMMA, group of chemical-cured PMMA reinforced by stainless steel wire and group of chemical-cured PMMA reinforced by Ribbond polyethylene fiber. A three-point bending test was used to measure the flexural strength and flexural modulus of specimens. Then the data were analyzed with a one-way analysis of variance.


RESULTS
The flexural strength of chemical-cured PMMA group was (51.383 +/- 2.761) MPa, the flexural modulus was (1791.2 +/- 113.760) MPa; The flexural strength of stainless steel wire reinforced group was (58.725 +/- 1.218) MPa, the flexural modulus was (2092.76 +/- 120.28) MPa; The flexural strength of Ribbond polyethylene fiber reinforced group was (80.975 +/- 2.58) MPa, the flexural modulus was (2866.53 +/- 107.51) MPa. The one-way analysis of variance showed that the results were significant (P < 0.001). Newman-Keuls method showed that the differences among all groups were significant (P < 0.05).


CONCLUSIONS
The Ribbond polyethylene fiber can raise the flexural strength and flexural modulu of polymethyl methacylate.
Wang
Zhi-gang
ZG
Dept. of Prosthodontics, Stomatological School of Zhengzhou University, Zhengzhou 450052, China.
Mo
San-xin
SX
Ji
Ya-li
YL
Zhang
Qiu-xia
QX
Song
Zhong-cheng
ZC
D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D003799:Dental Stress Analysis; D008422:Materials Testing; D020959:Polyethylene / Q000737:chemistry*; D011095:Polyethylenes / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D013314:Stress, Mechanical; D013718:Tensile Strength
D003764:Dental Materials; D011095:Polyethylenes; C084063:RIBBOND; D020959:Polyethylene; D019904:Polymethyl Methacrylate