Background and Objectives: Polymethyl methacrylate (PMMA) is currently the material of choice for denture base fabrication, that it has the advantages of good pigment wettability, high gloss and so on.
Uses of natural stains (amaranth and vanilla) cheap and available in our country instead of the synthetic stains with heat cure acrylic resin denture base material for matching with natural human gingiva. Materials and Methods: Ninety samples were prepared of pink heat cure acrylic resin VertexTM material, fifteen samples with natural additives and seventy five samples with synthetic Vertex acrylic stainTM. The color of samples and gingival color of 24 healthy young participate were measured by Vita Easyshade device then compared between them. Statistical analysis was done by special designed program prepared for this study in Mat lab program 2010 that calculate the color difference between all the measurements that appeared only the (ΔE) that ≤ 6.8. Results: Results showed that (ΔE) ≤ 6.8 between some of natural and synthetic stains matched in relation to color of patients' gingiva, and some natural stains matched the color of the patients' gingiva. Conclusions: The results approved can be using the natural stains vanilla and amaranth instead of the synthetic Vertex acrylic stains that is clinically acceptable compared in relation to patients.
Key Words: Natural stains, Vanilla, Amaranth, PMMA.
Table of Contents
1. INTRODUCTION
2. MATERIALS AND METHODS
3. RESULTS
4. DISCUSSIONS
5. CONCLUSIONS
6. REFERENCES
Objectives and Research Themes
The primary objective of this study is to evaluate the viability of using natural staining agents, specifically amaranth and vanilla, as cost-effective and safer alternatives to synthetic pigments in heat-cured acrylic resin denture base materials, ensuring an aesthetic match with natural gingival tissues.
- Analysis of color reproduction in prosthetic dentistry using natural versus synthetic pigments.
- Evaluation of the efficacy of amaranth and vanilla as natural, non-toxic alternatives for denture base coloration.
- Comparative colorimetric assessment using the CIE L*a*b* system against patient gingival data.
- Determination of clinical acceptability based on color difference metrics (ΔE).
- Investigation into the impact of varying stain concentrations on material cost and color stability.
Excerpt from the Book
INTRODUCTION
Polymethyl methacrylate (PMMA) is currently the material of choice for denture base fabrication, that it has the advantages of good pigment wettability, high gloss and so on. In order to obtain a natural looking restoration, there are two crucial steps in everyday dental practice; the selection of color through shade guide which will harmoniously integrate itself with surrounding biological tissue and consequently the correct reproduction of the color in the prosthesis. Healthy gingival color ranges from pale pink and pink to dark red or purple.
Esthetic effects are sometimes produced in a restorative material by the incorporation of colored pigments; is pigments in non metallic materials such as resin, composites, dentures acrylics, silicone maxillofacial materials and dental ceramics. Synthetic stains are mainly chemical products, which have some toxicity. The obtainment of coloring matter based on natural products is of considerable importance since the United States have banned the use of synthetic coloring in foods. Grain Amaranth (Amaranthus paniculatus) it is a natural stain that the anthocyannin is the reddish pigments in amaranth flour and vegetation appear to have great potential as a source of natural, non–toxic red dyes, this pigment is used in food industry.
Chapter Summary
INTRODUCTION: Outlines the necessity of realistic gingival color reproduction in dentures and explores the potential toxicity of synthetic stains compared to natural alternatives like amaranth and vanilla.
MATERIALS AND METHODS: Describes the preparation of acrylic samples with varying concentrations of natural and synthetic pigments and the use of the Vita Easyshade device to measure color differences against human gingiva.
RESULTS: Presents the measured L*a*b* values for prepared samples and patient gingiva, along with the calculated color difference metrics (ΔE).
DISCUSSIONS: Interprets the findings, noting that specific concentrations of natural stains successfully match gingival colors within clinically acceptable limits, proving them to be viable substitutes.
CONCLUSIONS: Summarizes that amaranth and vanilla are effective, clinically acceptable, and cost-efficient alternatives to synthetic Vertex acrylic stains for dental applications.
REFERENCES: Provides the scientific literature and supporting studies used to validate the methodology and background research.
Keywords
Natural stains, Vanilla, Amaranth, PMMA, Denture base, Color reproduction, CIE L*a*b*, Color difference, ΔE, Prosthetic dentistry, Biocompatibility, Aesthetic restoration, Acrylic resin, Pigmentation.
Frequently Asked Questions
What is the core focus of this research?
The research examines the use of affordable and natural coloring agents (amaranth and vanilla) as substitutes for chemical-based synthetic stains in the fabrication of pink acrylic resin denture bases.
Which materials were compared in this study?
The study compared samples prepared with natural additives (amaranth and vanilla) against those prepared with standard synthetic Vertex acrylic stains.
What is the primary objective of this work?
The goal is to determine if natural stains can produce a color match with human gingiva that is clinically indistinguishable (ΔE ≤ 6.8) from results achieved with synthetic stains.
What scientific methodology was employed?
The authors used the Vita Easyshade spectrophotometer to measure color values (L*, a*, b*) and a custom Matlab 2010 program to calculate the color difference (ΔE) between prosthetic materials and human patients.
What does the main body of the paper cover?
The main body covers the preparation of samples in different concentrations, the color measurement process of dental students' gingiva, and the subsequent statistical analysis of color compatibility.
Which keywords define this study?
Key terms include Natural stains, Vanilla, Amaranth, PMMA, Denture base, Color reproduction, and CIE L*a*b* system.
Why are amaranth and vanilla considered promising alternatives?
They are readily available, inexpensive, and generally considered safer and non-toxic compared to chemical synthetic stains, which is highly relevant given food safety regulations.
What were the final conclusions regarding stain concentration?
The study found that increasing the stain concentration from 1% to 10% did not always yield significant color improvements, suggesting that lower concentrations are sufficient and prevent the waste of resources and unnecessary costs.
- Quote paper
- Amer A. Taqa (Author), Nadira Hatim (Author), Nashwah Azeez (Author), 2012, Natural Stain as a Substitute of Synthetic Stain, Munich, GRIN Verlag, https://www.hausarbeiten.de/document/209689
