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Impact Strength Of An Experimental Polyurethane- Based Polymer

Radzi Z (Zamri Radzi), and Abu Kasim N.H. (Noor Hayaty Abu Kasim), and Yahya N.A. (Noor Azlin Yahya), and Gan S.N., and Daud N.M., and Saffai L., and Fadhel F.A., (2007) Impact Strength Of An Experimental Polyurethane- Based Polymer. Annals of Dentistry, 14 (1). pp. 46-51. ISSN 0128-7532

Full text not available from this repository.

Official URL: http://ejum.fsktm.um.edu.my/ArticleInformation.aspx?ArticleID=532

Affiliations

University of Malaya. Faculty of Dentistry. Dept. of Children’s Dentistry & Orthodontics
University of Malaya. Faculty of Dentistry. Dept. of Conservative Dentistry
University of Malaya. Faculty of Dentistry. Dept. of Conservative Dentistry
University of Malaya. Faculty of Science. Dept. of Chemistry
Ministry of Health Malaysia
Ministry of Health Malaysia

Abstract

The impact strength of a newly developed experimental polyurethane-based polymer which is derived from palm oil (Experimental PU) was compared with denture polymers; heat-cured and self cured polymethyl methacrylate (PMMA) and ® Eclipse , light-activated urethane dimethacrylate prosthetic resin system. Ten specimens were ® prepared using heat-cured PMMA (Meliodent Heat Cure, Heraeus Kulzer, Germany), self cured PMMA ® (Meliodent Rapid Repair, Heraeus Kulzer, ® Germany), Eclipse baseplate resin (Dentsply, USA) and Experimental PU material. Specimens were prepared following manu- facturer’s instructions except for the Experimental PU material where it was prepared in bulk and sectioned to the desired dimension, 64 x 6 x 4 mm. A ‘V’ notch of approximately 0.8mm in depth was machine cut across the 6mm width. Prior to the Charpy type impact test, specimens were soaked in a water bath for 50 hours at 37ºC. ® Eclipse baseplate resin showed the highest 2 impact strength (2.73 kJ/m ±0.54) followed by ® 2 Meliodent Rapid Repair (2.50kJ/m ±0.65), ® 2 Meliodent Heat Cure (1.96kJ/m ±0.42) and 2 Experimental PU (1.04kJ/m ±0.29). One-way ANOVA showed significant interaction between materials (p<.05) and Tukey HSD revealed that Experimental PU exhibited significantly lower impact strength compared to other materials. ® Meliodent Rapid Repair was not significantly ® ® different from Meliodent Heat Cure and Eclipse baseplate resin. It can be concluded that the Experimental PU ® exhibited the lowest impact strength while Eclipse baseplate resin the highest.

Item Type:Journal
Keywords:Impact strength; denture based material dental polymer
Subjects:R Medicine, Dentistry, Pharmacy, Nursing
ID Code:1992

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