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International Poster Journal of Dentistry and Oral Medicine
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Int Poster J Dent Oral Med 11 (2009), No. 1     15. Mar. 2009
Int Poster J Dent Oral Med 11 (2009), No. 1  (15.03.2009)

Poster 433, Language: English


Flexural-strength and E-modulus of hypo-allergic denture base materials
Mansour, Sonia/Jarkas, Manar I./Bierögel, Christian/Grellmann, Wolfgang/Setz, Jürgen M./Boeckler, Arne F.
Objectives: Hypoallergenic-denture-base-materials [HDBM] are free from toxic or potential allergic substances. To clinically substitute conventional PMMA-denture-base-resins [PDBR] HDBM should meet the standards in mechanical-physical properties. Fundamental material properties are flexural strength [FS] and flexural modulus [FM]. High FS/FM-values contribute to the preservation of edentulous jaw areas. FS is an indicator of the strength and work capability in denture materials. A High FM value specifies rigidity as well as stiffness and represents denture base material's resistance to elastic deformation. The aim of this in-vitro study was to evaluate mechanical-physical properties of HDBMs and the comparison to established PDBRs.
Methods: The 7 tested HDBMs (Acetal, Erkokryl, Luxene, Microbase, Polyan, Sinomer, Versio.com) were free from toxic or potential allergic substances. 3 PDBRs (Paladon65, PalaXpress, SR-Ivocap) represented the standard levels [SL-FS/SL-FM]. Specimens (60x10x4mm) were produced by the respective manufactures. 6 specimens from each product were tested in the three-point-bending-test according to ISO178:2006. The automatically recorded force measurement (TestXpert 8.1, Zwick, Germany) was performed until fracturing at a test speed of v=5mm/min. FS and FM were calculated and analyzed (T-test, p

Keywords: flexural strength, flexural modulus, hypoallergic, denture base materials

Conference/Exhibition:
July 2-5, 2008
86th General Session & Exhibition of the IADR
Toronto, Canada