The effect of poly-aramide fiber reinforcement on the transverse strength of a provisional crown and bridge resin.
A total number of 65 specimens of a provisional crown and bridge (PMMA) poly methyl methacrylate (acrylic resin) was utilized in the present study. Sixty specimens were reinforced either by silane-treated or un-silane-treated poly-aramide fibres. The specimens were classified according to the length and the fiber orientations. It was found that, the silanated longitudinally fibered specimens offered the greatest transverse strength (87.2 Mn/m2). On the other hand, the transversely fibered specimens demonstrated the lowest value (44.4 Mn/m2). Moreover, the 6 mm long randomly oriented silanated fibered specimens possessed a higher transverse strength values (73.6 Mn/m2) compared with 3 mm long and the combination 6 mm + 3 mm long silanated fibered specimens (55.2 Mn/m2 and 62 Mn/m2) respectively. It was demonstrated also that, the inclusion of the un-silanated fibers reduced the transverse strength values of the resin specimens dramatically.
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Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University.
D000180:Acrylic Resins / Q000737:chemistry*; D003442:Crowns; D003764:Dental Materials / Q000737:chemistry*; D019232:Dental Restoration Failure; D003829:Denture, Partial; D003833:Denture, Partial, Temporary; D006801:Humans; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D009757:Nylons / Q000737:chemistry*; D012821:Silanes; D013718:Tensile Strength
D000180:Acrylic Resins; D003764:Dental Materials; D009757:Nylons; D012821:Silanes; C111780:polyaramide