Physical properties of four acrylic denture base resisns

Thomas R. Meng, Mark A. Latta

Research output: Contribution to journalArticle

59 Scopus citations

Abstract

Resistance to impact fracture and high flexural strength are desirable properties of denture base acrylics. The purpose of this laboratory study was to determine the Izod impact strength, the flexural strength, the flexural modulus, and the yield distance for four premium denture resins. Bar specimens 86 x 11 x 3 mm of Lucitone 199, Fricke Hi-I, ProBase Hot, and Sledgehammer Maxipack were fabricated following the manufacturer's instructions for heat processing. The bars were surface finished using silicon carbide paper to 600 grit. Ten specimens from three lots of each material were made (n=30). Flexural strength, flexural modulus, and yield distance were determined by testing the specimens to failure using a three-point test fixture. Izod impact strength was determined using an Izod tester on un-notched specimens generated from the flexural test (n=60). Analysis of variance (ANOVA) and post-hoc Tukey's test were used for statistical comparison of each property. There were significant differences in the physical properties among the denture acrylics tested. Lucitone 199 demonstrated the highest impact strength, flexural strength, and yield distance (p

Original languageEnglish (US)
Pages (from-to)93-100
Number of pages8
JournalJournal of Contemporary Dental Practice
Volume6
Issue number4
DOIs
StatePublished - Nov 15 2005

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

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