title: Fatigue resistance of acrylic resin denture base material reinforced with E-glass fibres.
abstract: OBJECTIVE
  The purpose of the study was to determine the effect of different forms and concentrations (2.5, 3, 4, 5% by volume) of glass fibres (chopped strand mat, continuous and woven) on fatigue resistance of acrylic denture base resin.
  
  
  METHODS
  The fatigue resistance was measured by applying repeated three-point bending deflection to the specimens, the cycle frequency of 1.05 g and magnitude of deflection of 2.0 mm. The number of loading cycles needed to cause a fracture in the test specimen was considered the fatigue resistance of the specimen.
  
  
  RESULTS
  The results of this study revealed that the addition of three different glass fibre forms at all concentrations to acrylic resin did not produce a statistically significant increase in the fatigue resistance (p ≥ 0.05). This study also revealed that there were significant differences (p < 0.05) between glass fibres forms used concerning the effects on the fatigue resistance.
  
  
  CONCLUSIONS
  This study showed that the woven glass fibres had a definite superiority over the chopped fibres and the continuous fibres in regard to the fatigue resistance of the acrylic denture base resin.
authors.affiliation: Department of Dentistry, Bakirkoy Research and Training Hospital for Psychiatry, Neurology and Neurosurgery, Istanbul, Turkey. zlmgrbz@yahoo.com
authors.forename: Ozlem
authors.initials: O
authors.lastname: Gurbuz
authors.forename: Idil
authors.initials: I
authors.lastname: Dikbas
authors.forename: Fatma
authors.initials: F
authors.lastname: Unalan
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry; D017609:Barium Compounds / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003819:Denture Bases; D005290:Ferric Compounds / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008422:Materials Testing; D008768:Methylmethacrylates / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D018583:Pliability; D019904:Polymethyl Methacrylate / Q000737:chemistry; D017680:Potassium Compounds / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D000180:Acrylic Resins; D017609:Barium Compounds; D017610:Calcium Compounds; D003764:Dental Materials; D005290:Ferric Compounds; D008768:Methylmethacrylates; D010087:Oxides; D017680:Potassium Compounds; C009753:fiberglass; C091555:Meliodent; C000499:ferric oxide; D008277:Magnesium Oxide; C068440:potassium oxide; D012822:Silicon Dioxide; C077606:barium oxide; D019904:Polymethyl Methacrylate; C016538:lime; D000537:Aluminum Oxide