The Relationship of Modulus of Elasticity and Micro-Hardness of Denture Bases to Pressure Transmission under the Thermoplastic Nylon Denture Base

Abstract:

Introduction: The purpose of this study was to evaluate the relationship of modulus of elasticity and micro-hardness of denture bases to pressure transmission under the thermoplastic nylon denture base.Material and Methods: Mandibular first molar acrylic denture teeth (Bioeco) embedded on 15x15x3 mm³ thermoplastic nylon (TCS and BioTone) and poly methyl methacrylate denture bases were evaluated (n=9). A 100N force applied on the specimen using universal testing machine and the pressure transmitted under the specimen observed using pressure transducer. The modulus of the elasticity (n=16) measured on 64x10x3,3 mm³ specimens and micro-hardness (n=16) measured on 10x10x3 mm³ specimens. Data were statistically analyzed using One-way Anova followed by Tukey HSD post hoc test. Pearson correlation test used to evaluate the relationship of modulus of elasticity and micro-hardness on denture bases to pressure transmission (α ≥ 0,05).Results: The results showed that poly methyl methacrylate has the highest pressure transmission compared to others. There was a significant relationship between modulus of elasticity and micro-hardness to pressure transmission under the denture base.Discussion: This study can help dentists to determine the design of dentures, especially in the selection of denture base materials.

• Periodical: Journal of Biomimetics, Biomaterials and Biomedical Engineering (Volume 48)
• Pages: 134-140
• DOI: https://doi.org/10.4028/www.scientific.net/JBBBE.48.134
• Online since: November 2020
• Authors: Ika Andryas*, Hubban Nasution
• Keywords: Denture Base, Micro-Hardness, Modulus of Elasticity, Pressure Transmission, Thermoplastic Nylon

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