Publication
Title
Dynamic elastic modulus of packable composites
Author
Abstract
Objective: A new type of so-called packable, condensable or mouldable composite has been developed and aims at replacing amalgam for posterior restorations. The purpose of the present investigation was to study the dynamic elastic modulus of 12 packable composites, and to follow the evolution of this property following prolonged water absorption. Methods: Of each material ten rectangular samples (1.5×5×35 mm) were prepared. The elastic modulus (GPa) of each sample was determined with a non-destructive dynamic method using a Grindo-Sonic after 24 h of dry storage at room temperature, and after 24 h, 1, 3 and 6 months of wet storage at 37°C. All data were analyzed using two-way ANOVA, Bonferroni/Dunn's test for multiple comparisons and paired t-test with a significance level of p<0.05. In addition, inorganic filler volume percentages were derived from the phenomenological model introduced by Braem et al. [11]. Results: The studied materials varied widely in terms of elastic modulus, ranging between composites classified as Compact-Filled Densified (elastic modulus of 23.4±2.4 GPa) and as Microfine (elastic modulus of 8.5±2.1 GPa). Significance: The great diversity observed in the elastic modulus of this type of composites necessitates clear specifications with regard to first the definition of marketing terms such as packable and so on, and second the justified use in posterior teeth.
Language
English
Source (journal)
Dental materials. - Copenhagen
Publication
Copenhagen : 2001
ISSN
0109-5641
Volume/pages
17:6(2001), p. 520-525
ISI
000171634800008
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 31.01.2012
Last edited 23.05.2017
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