title: Comparison of denture base resin reinforced with polyaromatic polyamide fibers of different orientations.
abstract: The aim of this study was to evaluate the effect of reinforcing polyaromatic polyamide (aramid) fibers with various orientations on the flexural properties of denture base resin. Aramid fibers with four orientations of unidirectional, woven, non-woven and paper-type were pre-impregnated and placed at the bottom of a specimen mold. Heat-polymerized denture base resin was packed over the fibers and polymerized. A three-point bending test was performed using a universal testing machine at a crosshead speed of 5 mm/min. The flexural strengths and flexural moduli of the unidirectional and woven groups were significantly higher than those of the control and other experimental groups.For the flexural moduli, all experimental groups showed significantly higher reinforcing effects than the control group. In conclusion, the unidirectional group located perpendicular to the direction of the load was most effective in reinforcing the denture base resin, followed by the woven group.
authors.affiliation: Department of Dental Biomaterials and Institute of Biomaterials·Implant, College of Dentistry, Wonkwang University, Iksan, Jeonbuk, Korea.
authors.forename: Sang-Hui
authors.initials: SH
authors.lastname: Yu
authors.forename: Dae-Hyung
authors.initials: DH
authors.lastname: Ahn
authors.forename: Ji-Su
authors.initials: JS
authors.lastname: Park
authors.forename: Yong Sik
authors.initials: YS
authors.lastname: Chung
authors.forename: In-Sik
authors.initials: IS
authors.lastname: Han
authors.forename: Jung-Seop
authors.initials: JS
authors.lastname: Lim
authors.forename: Seunghan
authors.initials: S
authors.lastname: Oh
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Oda
authors.forename: Ji-Myung
authors.initials: JM
authors.lastname: Bae
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003799:Dental Stress Analysis / Q000295:instrumentation; D003819:Denture Bases; D055119:Elastic Modulus; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D010781:Photography; D018583:Pliability; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C039578:Kevlar Aramid fibers; D011108:Polymers; D014867:Water