Flexural strength and hardness of resins for interim fixed partial dentures

Context: Materials used for the fabrication of interim restorations must satisfy biological, esthetic, and functional needs. Strength and wear resistance are two important physical properties contributing to clinical efficiency. Aim: The objective of this in vitro study was to evaluate and compare t...

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Bibliographic Details
Published in:Indian journal of dental research 2011-01, Vol.22 (1), p.71-76
Main Authors: Jo, Liju, Shenoy, Kamalakanth, Shetty, Sanath
Format: Article
Language:English
Subjects:
Dental care
Flexural strength
Gums and resins industry
interim fixed partial dentures
Light
Mechanical properties
microhardness
Polymerization
Standard deviation
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Summary:Context: Materials used for the fabrication of interim restorations must satisfy biological, esthetic, and functional needs. Strength and wear resistance are two important physical properties contributing to clinical efficiency. Aim: The objective of this in vitro study was to evaluate and compare the flexural strength and hardness of five resins used for the fabrication of interim fixed partial dentures. Materials and Methods: Five groups containing ten specimens of each material were fabricated in customized brass split molds with dimensions 65×10×2.5 mm. The materials subjected to this study were Revotek LC(TM) (group RLC), Protemp II(TM) (group PSC), Acry-lux V(TM) with regular monomer (group AHC), Acry-lux V(TM) with self-cure monomer (group ASC), DPI(TM) self-cure tooth molding powder (group DSC). The specimens were polymerized according to the manufacturers' instructions and were evaluated for flexural strength using a universal testing machine and for hardness using a microhardness tester. Statistical Analysis: The mean of the five groups was compared using one way analysis of variance (ANOVA) and pair-wise comparison was done using Tukeys honesty significance difference (HSD) test. P
ISSN:0970-9290
1998-3603
DOI:10.4103/0970-9290.79992