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J Dent Res Dent Clin Dent Prospects. 2014;8(3): 148-152.
doi: 10.5681/joddd.2014.027
PMID: 25346833
PMCID: PMC4206756
  Abstract View: 875
  PDF Download: 669

Original Research

Flexural Strength of Acrylic Resin Denture Bases Processed by Two Different Methods

Jafar Gharechahi 1*, Nafiseh Asadzadeh 2, Foad Shahabian 3, Maryam Gharechahi 4

1 Professor of Prosthodontics, Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
2 Associate Professor of Prosthodontics, Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
3 Assistant Professor of Prosthodontics, Dental Research Center, School of Dentistry, Ahvaz University of Medical Sciences, Ahvaz, Iran
4 Assistant Professor of Endodontics, Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
*Corresponding Author: Email: gharechahim@mums.ac.ir

Abstract

Background and aims. The aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. Materials and methods. Conventional pressure-packed PMMA was used for conventional pressure-packed and injection-molded PMMA was used for injection-molding techniques. After processing, 15 specimens were stored in distilled water at room temperature until measured. Three-point flexural strength test was carried out. Statistical analysis was carried out by SPSS using t-test. Statistical significance was defined at P<0.05. Results. Flexural strength of injection-polymerized acrylic resin specimens was higher than that of the conventional method (P=0.006). This difference was statistically significant (P=0.006). Conclusion. Within the limitations of this study, flexural strength of acrylic resin specimens was influenced by the molding technique.
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Submitted: 04 Oct 2014
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