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Hedzelek, W.; Gajdus, P.; Joniak, S. (2002)
Publisher: School of Dental Medicine, University of Zagreb, Croatian Dental Society - Croatian Medical Association
Journal: Acta stomatologica Croatica
Languages: English
Types: Article
Subjects:
The aim of the study was to evaluate the resistant forces of acrylic palatal plates reinforced with glass net and unidirectional glass fibers. The form and models of the edentulous jaw (Frasaco) were used in the study. Palatal plates were made from hot polymerised acrylic SR Triplex Hot (Ivoclar). In the total reinforced method the studied palatal plates used were reinforced with one or three layers of fiber glass net (Stick Net). In the partial reinforced method acrylic palatal plates were reinforced with one bundle of unidirectional glass fibers (Stick). Acrylic resin and glass fibers were prepared and polymerised according to the manufacturer's recommendation. Palatal plates were kept two weeks in water before the tests. Measurements of mechanical properties were made using loading in a universal resistance machine (FM Rauenstein). The palatal plates were loaded with a force in the symmetric plane. The results were compared with measurements in the control group, where acrylic palatal plates lacked reinforcement. Acrylic palatal plates reinforced with glass net, and plates withoutreinforcement break into pieces under loading. Palatal plates reinforced with bundle of glass fiber cracked under loading without being broken to pieces. The greatest strength of the studied palatal plates was observed in plates with three layers of glass net.
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