Aims: To evaluate pH, viscosity and retentive ability of modified adhesive materials and compared it with commercially available adhesive materials. Materials and Methods: The pH–value of 0.25% denture adhesive materials were determined using pH meter. The viscosity was determined by Ostwald viscometer (Aldrich Company). The retentive ability was measured by specially manufactured reten-tion testing machine using an acrylic resin disc samples which have 6cm diameter and 3mm thickness prepared from a special mold. Results: The findings of the present study showed that the "Bonyplus" gave the highest pH values of all materials tested. Also, showed that the "CMC” gave the highest vis-cosity values, while "Bonyplus" gave the lowest one. The "CMC" gave the highest retention while the "Distilled water" gave the lowest one. Conclusions: All denture adhesive materials tested have a pH equal to that of neutral. The viscosity test showed that the newly prepared materials have a higher vis-cosity than commercial denture adhesive materials. The retention test showed that the newly prepared materials have a higher efficiency than commercial denture adhesive materials.
Key Words: Retentive ability, Properties, denture, adhesive material.
Table of Contents
1. Introduction
2. Materials and Methods
2.1. pH Test
2.2. Viscosity Test
2.3. Retention Test
3. Results
4. Discussion
5. Conclusions
Research Objectives and Focus
The primary objective of this research is to evaluate and compare the pH levels, viscosity, and retentive ability of newly modified denture adhesive materials against commercially available alternatives to determine their efficacy in clinical applications.
- Modification of sodium carboxymethylcellulose with additives (thymol, sodium fluoride, chlorhexidine).
- Measurement and comparative analysis of pH, viscosity, and retention force.
- Evaluation of the influence of polymer additives on material performance.
- In vitro testing using standardized acrylic resin samples and specialized retention testing apparatus.
Excerpt from the Publication
MATERIALS AND METHODS
In the present study, locally available denture adhesive material Sodium-carboxymethylcellulose (Natural product, India) was modified by addition of some additives in 2%. The additive materials used were thymol crystal (BDH Company), Sodium fluoride (SINAflor Avicenna LABs, Damascus) and Chlorhexidine (powder Iraq NDI). They were tested for toxicity by Silver Nitrate Test and Bettendroffs test (8, 9). These denture adhesive materials were tested in comparison with three commercially available denture adhesive materials Fittydent (paste) Fittydent (international GMBH, Austria): Bonyplus (paste) (Bonyf AG, Switzerland) and Calcident (powder) (Sofa Dental, Germany) (Table, 1).
1. pH Test: The pH–value of 0.25% denture adhesive materials was determined using pH meter (Philips Company, Japan). The test was carried out for each of the eight denture adhesive materials.
2. Viscosity Test: In order to evaluate the viscosity of denture adhesive materials the density of adhesive samples was determined by measuring its mass per unit volume using electronic balance (Mettler PM460, Germany) and volumetric flasks (10), then the viscosity of denture adhesive materials was determined by Ostwald viscometer (Aldrich Company)(11).
3. Retention Test: To control the diameter and the thickness of the acrylic resin disk samples, a standard metal mold was constructed which has a dimension of 10mm in thickness and 6cm in diameter, the cover has a projected surface of 7mm thickness to fit inside the mold leaving a space of 3mm for the sample to be formed, in the middle of the mold a hole of 1.5cm in diameter placed in which a piston of same diameter inserted for packing the acrylic resin and removal of the sample after curing.
Summary of Chapters
1. Introduction: Discusses the significance of denture retention in prosthetics and reviews existing approaches and literature regarding the use of denture adhesives.
2. Materials and Methods: Outlines the preparation of modified adhesive samples and details the specific laboratory procedures used to measure pH, viscosity, and retentive capacity.
3. Results: Presents the statistical findings of the laboratory tests, including mean values and ANOVA analyses for pH, density, viscosity, and retention force.
4. Discussion: Interprets the experimental data, linking the chemical composition and additives to the observed performance variations in viscosity and retention.
5. Conclusions: Summarizes the study findings, confirming that the modified adhesive materials demonstrated higher viscosity and better retention efficiency than the commercial products tested.
Keywords
Denture, Adhesive material, Retentive ability, pH value, Viscosity, Sodium carboxymethylcellulose, Prosthetic dentistry, Acrylic resin, Thymol, Sodium fluoride, Chlorhexidine, In vitro study, Denture retention, Material properties, Dental research
Frequently Asked Questions
What is the primary focus of this research?
The study investigates the physical and chemical properties, specifically pH, viscosity, and retentive force, of denture adhesives modified with specific chemical additives.
What are the central themes of the investigation?
The research centers on material science within prosthetics, examining how modifying sodium carboxymethylcellulose (CMC) with agents like thymol or fluoride affects the adhesive's functional performance.
What is the main research question or objective?
The goal is to determine if adding specific additives to standard denture adhesives can improve their retention and viscosity compared to existing commercial brands.
Which scientific methods were applied?
The researchers utilized a pH meter for acidity levels, an Ostwald viscometer for viscosity, and a customized mechanical testing apparatus to measure the force required to detach the adhesives.
What is covered in the main body of the paper?
The main body details the preparation of the test samples, the rigorous experimental testing protocols, and a comprehensive statistical analysis of the performance metrics.
Which keywords characterize this paper?
Key concepts include denture retention, adhesive material properties, viscosity, material modification, and prosthetic dental applications.
How does the viscosity of the modified adhesives compare to commercial products?
The study found that the newly prepared modified materials generally exhibited higher viscosity levels than the commercially available adhesive products tested.
Why did the researchers add thymol, sodium fluoride, and chlorhexidine?
These additives were incorporated to modify the base CMC material, testing how they affect the physical properties and potentially the clinical utility of the denture adhesive.
What was the role of the retention testing machine?
It was specifically designed to simulate the separation of the denture from oral tissues, allowing for the quantification of the adhesive's retentive efficiency under standardized conditions.
What conclusion did the authors draw regarding the modified materials?
The authors concluded that the newly prepared adhesive materials showed higher efficiency in both viscosity and retention compared to the commercial control samples.
- Citar trabajo
- Dr. Amer A. Taqa (Autor), Hala Khuder Ali (Autor), Munter N. Kazanji (Autor), 2010, Evaluation of Retentive Ability and Some Properties of Modified Denture Adhesive Materials, Múnich, GRIN Verlag, https://www.grin.com/document/207693
