scholarly journals The Effect of Immersed Heat Cured Acrylic Resin Denture Base in Chlorhexidin and Extract of Roselle Flower towards Color Stability

2018 ◽  
Author(s):  
Mohammad Zulkarnain ◽  
Putri Angelyna
Keyword(s):  
Color Stability ◽  
Acrylic Resin ◽  
Denture Base

scholarly journals Evaluation of the influence of different beverages on the color stability of heat polymerized denture base acrylic resin materials

2015 ◽  
Vol 3 (11) ◽  
pp. 1363-1369
Author(s):  
Dr. Gunjan Chouksey ◽  
◽  
Dr. Roopa KT ◽  
Dr. Divyank Dayal ◽  
◽  
...  
Keyword(s):  
Color Stability ◽  
Acrylic Resin ◽  
Denture Base

scholarly journals The Effect of Denture Cleansers on Color Stability, Water Sorption and Solubility of Stained Denture Base Materials

2018 ◽  
Vol 2 (2) ◽  
pp. 162-173
Author(s):  
Mahabad Saleh ◽  
Salem Salem
Keyword(s):  
Oxalic Acid ◽  
Water Sorption ◽  
Color Change ◽  
Physical And Mechanical Properties ◽  
Color Stability ◽  
Acrylic Resin ◽  
Control Group ◽  
Denture Base ◽  
Base Materials ◽  
Denture Cleansers

Background and Objectives: Denture cleanser is the most widely used method by the patients to maintain clean and healthy dentures but the prolonged use of such cleansers may affect the properties of the denture. The present study was carried out to evaluate the effect of three prepared denture cleansers which were the 4% citric acid, 4% tartaric acid, and 4% oxalic acid in addition to the Protefix a commercially available denture cleansers, on some mechanical and physical properties (color stability, water sorption, and solubility) of acrylic resin (Stellon QC-20) and flexible nylon (Vaplast) denture base materials after immersion in tea solution. Methods: One hundred specimens (100) were prepared in two equal major groups: acrylic resin and Valplast. For each test of the physical and mechanical properties, 50 specimens were prepared, 25 from acrylic resin and 25 from Valplast. Later on, divided into five groups, one group used as a control and immersed in distilled water, and remaining 4 groups used as test groups; by immersing in one of the denture cleansers after staining in tea solutions for 10 days. The effect of denture cleansers on the properties was studied and compared with the control group. Results: Visual examination method showed no color changes for acrylic and slight color change for valplast specimens. Valplast specimens showed higher water sorption and solubility than acrylic. Conclusions: The findings showed that the 4 denture cleansers were equally effective, and did not cause significant alteration in the tested properties. Except acrylic specimens immersed in oxalic acid showed less color stability.

scholarly journals The comparison of color stability between thermoplastic nylon resin and heat-cured acrylic resin after tea-soaking using spectrophotometer

2009 ◽  
Vol 21 (3) ◽  
Author(s):  
Lisa Putri Lestari ◽  
Kosterman Usri ◽  
Renny Febrida
Keyword(s):  
Base Material ◽  
Color Stability ◽  
Acrylic Resin ◽  
Colour Stability ◽  
Thermoplastic Resin ◽  
Denture Base ◽  
Material Requirement ◽  
System Data ◽  
Materials Used ◽  
Tea Drinking

Color stability is one of the denture base material requirement. Nowadays, nylon thermoplastic resin and heat-cured acrylic resin which is used as denture base materials can be changed in colour. One of a colour-changed factor is the tea drinking habit. The objective of this research was to compare the colour stability between nylon thermoplastic resin and heat-cured acrylic resin after soaked in tea. Materials used for the research were nylon thermoplastic resin from Valplast and heat-cured acrylic resin QC-20, with a sample size of 64x(10±0.03)x(2.5±0.03)mm. The sample would be assessed of colour stability after the denture base soaked in tea for 7 days. The colour measurement of each sample was done by spectrophotometer equipment (CIE lab system). Data gathered later on statistically processed with ANOVA testing. The result showed that the comparison ratio of colour stability between nylon thermoplastic resin and heat-cured acrylic resin after soaked in tea was 1.9886:1.1152. The conclusion was that colour stability in the nylon thermoplastic resin was lower than heat-cured acrylic resin after soaked in tea. This result was due to a polymer chain of nylon thermoplastic which was lower than heat-cured acrylic resin and its porosity which was higher, so tea easily soaked into the materials.

scholarly journals Effect of denture cleansers on color stability and surface roughness of denture base acrylic resin

2015 ◽  
Vol 26 (2) ◽  
pp. 163 ◽  
Author(s):  
HamidrezaRajati Haghi ◽  
Nafiseh Asadzadeh ◽  
Rasul Sahebalam ◽  
Mohammadreza Nakhaei ◽  
JamalZamani Amir
Keyword(s):  
Surface Roughness ◽  
Color Stability ◽  
Acrylic Resin ◽  
Denture Base ◽  
Denture Cleansers

scholarly journals Influence of Different Beverages on the Color Stability of Nanocomposite Denture Base Materials

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Emad Azmy ◽  
Mohamed Reda Zaki Al-kholy ◽  
Mohammed M. Gad ◽  
Ahmad M. Al-Thobity ◽  
Abdel-Naser M. Emam ◽  
...  
Keyword(s):  
Mineral Water ◽  
Color Change ◽  
Color Stability ◽  
Acrylic Resin ◽  
Sio2 Nanoparticles ◽  
National Bureau ◽  
Nano Tio2 ◽  
Denture Base ◽  
Nano Sio2 ◽  
Base Materials

Background. The effect of beverages on nanocomposite denture base materials is neglected. Therefore, this study aimed to investigate the influence of different beverages (coffee, tea, cola, and mineral water) on the color stability of nanoparticles-modified denture base materials (DBMs). Materials and Methods. A total of 280 specimens (n = 10/group) were prepared from heat-polymerized acrylic resin modified with different concentrations (3% and 7%) of zirconium dioxide (nano-ZrO2), titanium dioxide (nano-TiO2), and silicon dioxide (nano-SiO2) nanoparticles, while 0% was taken as a control. Color change (∆E) of the specimens was evaluated after simulating 6-month immersion time in four commonly used beverages, coffee, tea, cola, and mineral water, as experimental groups. Color stability was measured using a spectrophotometer, and then values were converted to National Bureau of Standards units (NBS units). The one-way ANOVA test was applied to compare color change (ΔE) results followed by Bonferroni’s post hoc test (α = 0.05). Results. The results showed that the heat-polymerized acrylic resin modified with different types of nanoparticles showed lower color changes after being immersed in beverage solutions compared to the unmodified group ( P  < 0.001), so the color stability of heat-polymerized acrylic resin was significantly enhanced by the addition of several nanoparticles; nano-ZrO2 showed the lowest ΔE followed by nano-TiO2 and then nano-SiO2. Regardless of the filler type, 3% concentration showed lower mean ΔE than 7% concentration. Regarding the beverage solutions, the greatest color change was found in the coffee group followed by tea and cola, while water showed the least changes. Conclusion. Modification of heat-polymerized acrylic resin with certain amounts of nano-ZrO2, nano-TiO2, and nano-SiO2 may be useful in improving color stability.

scholarly journals Color stability of heat polymerized polymethyl methacrylate resin denture base after addition of high molecular nano chitosan

2016 ◽  
Vol 49 (4) ◽  
pp. 185
Author(s):  
Ika Devi Adiana ◽  
Trimurni Abidin ◽  
Lasminda Syafiar
Keyword(s):  
Polymethyl Methacrylate ◽  
Color Stability ◽  
Acrylic Resin ◽  
Control Group ◽  
Denture Base ◽  
Acrylic Plate ◽  
Base Resin ◽  
Denture Base Resin ◽  
One Way Anova

Background: The addition of other ingredients to maintain color stability of heat polymerized polymethylmethacrylate is being developed. One of them is by adding high molecular nano chitosan. Purpose: This study aimed to determine the color stability of heat polymerized polymethyl methacrylate denture base resin after an addition of high molecular nano chitosan. Method: 30 sample pieces of acrylic plate (40x10x2 mm) were divied into 6 groups: control group and groups with the addition of chitosan nano gel percentages of 0.25, 0.50, 0.75, 1.0 and 1.50%. 2 ml chitosan nano gel was added into the mixture of acrylic resin with 23 g : 10 ml (P : L). After the mixture was inserted into a mold and then pressed and cured at 74oC for 120 minutes and then 100o C for 60 minutes. Acrylic plates were then released from the mold and finished. Color stability of acrylic resin were measured using UV-Vis Spectrophotometer and analyzed with a one way Anova. Result: The results showed significant differences in color stability after the addition of high molecular nano chitosan. The best color stability found in 1.0% the addition of chitosan nano gel group, the value was 0.07589 cm-1. Conclusion: The chitosan nano gel can be used to maintain color stability of heat polymerized polymethyl methacrylate denture base resin.

Influence of denture cleansers on the color stability of three types of denture base acrylic resin

2009 ◽  
Vol 101 (3) ◽  
pp. 205-213 ◽  
Author(s):  
Guang Hong ◽  
Hiroshi Murata ◽  
YingAi Li ◽  
Sinshuke Sadamori ◽  
Taizo Hamada
Keyword(s):  
Color Stability ◽  
Acrylic Resin ◽  
Denture Base ◽  
Denture Cleansers

scholarly journals STUDYING THE EFFECT OF NATURAL BAMBOO AND RICE HUSK POWDERS ON COMPRESSIVE STRENGTH and HARDNESS OF ACRYLIC RESIN

2019 ◽  
Vol 19 (1) ◽  
pp. 105-113
Author(s):  
Jawad K Oleiwi ◽  
Qahtan A Hamad ◽  
Hadil J Abdul Rahman
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Rice Husk ◽  
Compression Strength ◽  
Color Stability ◽  
High Strength ◽  
Acrylic Resin ◽  
Weight Fraction ◽  
Denture Base ◽  
Effect Of Particle Size

Denture base is the part of a denture that rests on the foundation tissues and to which teeth areAttached. Denture base may be complete or partial used for the alteration of missing natural teeth.The most popular material utilized for the fabrication of dentures base is the poly (methylmethacrylate) (PMMA) because is distinguished by many characteristic. The remarkable clarity ofa methyl methacrylate resin, its relatively high strength and hardness, its color stability under allconditions of dental use, its insolubility in the mouth fluids, all of these properties combine toprovide an excellent material for the prosthetics denture (S. S Carmen, 2010 and R. K. Alla 2013).This survey illustrate the effect of particle size of powders and weight fraction of natural Bambooand Rice Husk powders on PMMA, with the selected size particles of (25?m and 75?m) andweight fraction (2, 4, 6 and 8wt. %), on compression strength and hardness, and these experiencewere accomplished at a temperature of laboratory. The results showed improved in the hardnessand compression with concentration rate of Rice Husk and Bamboo powders in compositesamples. Also, the highest values of compressive strength and hardness were (300MPa.) and (86)respectively for (PMMA-8%RH) and particle size (25 ?m).

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