Study on transverse strength of fiber-reinforced denture material.
Journal name: World Journal of Pharmaceutical Research
Original article title: An investigation in to the transverse strength of light cure denture base material reinforced with glass fiber
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Dr. Amaal Kadhim AL Saadi
World Journal of Pharmaceutical Research:
(An ISO 9001:2015 Certified International Journal)
Full text available for: An investigation in to the transverse strength of light cure denture base material reinforced with glass fiber
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
Doi: 10.20959/wjpr201814-11302
Copyright (license): WJPR: All rights reserved
Download the PDF file of the original publication
Summary of article contents:
Introduction
The study investigates the transverse strength of light cure denture base materials reinforced with glass fiber in comparison to heat cure acrylic resin denture base materials. Acrylic resin, particularly Polymethylmethacrylate (PMMA), has been the standard material used for denture bases since the 1930s due to its aesthetic appeal and mechanical properties. However, conventional PMMA resins have limitations, including issues with fracture resistance and internal defects. This research aims to enhance the mechanical performance of denture bases by evaluating the effects of glass fiber reinforcement and comparing two different curing methods.
Impact of Glass Fiber Reinforcement on Mechanical Strength
One of the key findings of the study is the significant impact of glass fiber reinforcement on the mechanical strength of acrylic denture base materials. The results indicated that heat cured acrylic resin, when combined with glass fiber, achieved the highest mean transverse strength at 392.3 MPa. This suggests that the reinforcement technique effectively enhances mechanical properties, making denture bases more durable and fracture-resistant. In contrast, visible light cured acrylic resin, both with and without glass fiber, demonstrated lower strength values, with a maximum of 240.1 MPa, indicating limited improvement from the reinforcement.
Comparison of Heat Cure and Light Cure Acrylic Resins
The research highlighted a crucial difference between heat cured and visible light cured acrylic resins regarding their transverse strength. Heat cured acrylic resin showed significantly higher mechanical strength than visible light cured resin, raising concerns about the latter's suitability for certain dental applications. The study suggests that this disparity could be attributed to internal porosities commonly found in light cured resins, which may weaken their structural integrity. This finding emphasizes the importance of material choice in dental prosthetics, particularly in scenarios where mechanical strength is critical.
Analysis of Testing Methods
A detailed examination of testing methodologies indicated that the transverse strength test is vital for evaluating the mechanical properties of denture base materials. A three-point bending test was employed to measure flexural strength accurately, reflecting the materials' behavior during real-life mastication stresses. The study also utilized standard procedures to create consistent specimen dimensions, ensuring the reliability of comparisons. This emphasis on rigorous testing protocols underlines the necessity of methodical approaches in evaluating new dental materials.
Conclusion
In conclusion, the study reinforces the superiority of heat cured acrylic resin over visible light cured resin in terms of transverse strength, which is critical for the longevity and performance of denture bases. The incorporation of glass fibers presents a viable path for enhancing mechanical properties, although visible light cured resin still lags behind in overall performance. The findings of this research shed light on the material considerations that dental professionals must account for when selecting materials for denture fabrication, ultimately guiding future innovations in dental materials technology.
FAQ section (important questions/answers):
What was the aim of the study conducted by Dr. Amaal?
The study aimed to compare the transverse strength of heat cured acrylic resin and visible light cured acrylic resin, specifically focusing on the impact of adding glass fiber to the denture base materials.
What materials were used in the investigation?
The investigation used two types of denture base resins: heat cured acrylic resin and visible light cured acrylic resin, with some samples reinforced with glass fiber.
What method was used to test the denture base materials?
A 3-point bending test was conducted using an MTS Mini-bionics device to determine the flexural strengths and calculate the transverse strength of the materials.
What significant results were found in the study regarding strength?
The study found that heat cured acrylic denture base material exhibited significantly higher transverse strength than visible light cured acrylic resin, even after glass fiber reinforcement.
What were the transverse strength values for the tested groups?
The mean transverse strength values were: heat cured with glass fiber at 392.3 MPa, while visible light cured resin with glass fiber was 240.1 MPa.
What conclusion was drawn about the types of resins tested?
The study concluded that conventional heat cured acrylic resin demonstrated superior transverse strength compared to visible light-cured acrylic resin, highlighting significant statistical differences.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Study on transverse strength of fiber-reinforced denture material.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Glass:
Glass fibers are integral to enhancing the mechanical properties of denture base materials, particularly acrylic resins. They are commonly used due to their ability to improve strength without significantly affecting aesthetics. In this study, the impact of glass fibers on the transverse strength of both heat-cured and light-cured acrylic resins was examined.
2) Study (Studying):
In this context, the study refers to the systematic investigation aimed at comparing the transverse strengths of different denture base materials. It employed a controlled experimental setup, analyzing variables such as the type of material, reinforcement with glass fibers, and testing methods to derive meaningful conclusions regarding performance differences.
3) Table:
Tables are essential for presenting and organizing data clearly within a research article. In this study, tables summarize the mean transverse strength values, standard deviations, and results of statistical analyses. They facilitate easy comparison of the data obtained from different groups, such as heat-cured and light-cured acrylic resins.
4) Cati:
Dr. Amaal Kadhim Al Saadi is the corresponding author of the study, providing credibility and authority to the research. An assistant professor in the Dental Technologies Department, her expertise and involvement suggest that the study is grounded in clinical and academic knowledge, contributing to advancements in dental materials.
5) Pur:
The term 'poor' often describes the limitations observed in various materials, specifically regarding their mechanical properties, such as transverse strength. In this study, it highlights the suboptimal performance of visible light-cured acrylic resin compared to traditional heat-cured resin, emphasizing the need for improved formulations and reinforcement methods.
6) Performance:
Performance in this study relates to the ability of the denture base materials, particularly their strength and durability under stress. It highlights differences between heat-cured and visible light-cured acrylics and emphasizes the effectiveness of glass fiber reinforcement in enhancing the overall performance of these materials in a dental context.
7) Discussion:
The discussion section critically evaluates the results obtained from the study, comparing them with existing literature. This context allows researchers to draw conclusions about the implications of their findings, exploring potential reasons for observed differences in strength and proposing future directions for research in denture materials.
8) Irritation:
Irritation refers to the adverse reactions that patients might experience from certain materials, particularly in denture bases. The study mentions advancements aimed at creating materials with reduced mucosal irritation. This focus on patient comfort is essential in selecting dental materials that are both effective and biocompatible.
9) Stiffness:
Stiffness is a mechanical property that indicates how much a material resists deformation under load. In the context of this study, stiffness is crucial in evaluating the performance of denture base materials. Higher stiffness is often associated with better resistance to fracture and greater longevity in usable dental applications.
10) Surface:
Surface properties influence the bonding and interaction of denture materials with the oral environment. This study highlights the role of surface characteristics in the effectiveness of glass fibers, as irregular or compromised surfaces can lead to reduced strength and impact the overall performance of acrylic resins in clinical use.
11) Reason:
Reason pertains to the explanation or rationale behind the observed results in this study. Understanding the underlying reasons for differences in transverse strength between materials, such as the presence of porosities and bonding issues, is vital for improving denture bases and developing more effective dental materials.
12) Powder:
Powder refers to one of the forms in which acrylic denture base materials are available, along with liquids and sheets. This format is essential for creating the desired consistency and properties during the mixing and curing process, significantly impacting the final mechanical characteristics of the denture material.
13) Field:
Field pertains to the area of research and application, which, in this case, is dental materials. Advancements in this field aim to improve the performance and patient comfort of dental prosthetics, with this study contributing valuable insights into the comparative strengths of different acrylic resin formulations.
14) Miṇi (Mini):
Mini in this context refers to a specific model of the bending test device used in the study. The MTS Mini-bionics model allows for precise testing of material properties, such as transverse strength. Utilizing advanced equipment enhances the reliability of the results and the overall rigor of the research.
Other Science Concepts:
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