Antimicrobial and mechanical acrylic resin properties with silver particles obtained from Fusarium oxysporum

Objective: This study evaluated the effects of the incorporation of silver nanoparticles (AgNPs) obtained from Fusarium oxysporum on heat-activated acrylic resin (HAAR) and their influence on resin’s surface roughness, hardness, color alteration and antimicrobial capacity against Candida albicans. Material and Methods: For this, 50 discs of HAAR (2x5 mm) were produced and divided into three groups, Control: HAAR; Ag1: HAAR plus 0.539 mg of AgNPs; and Ag2: HAAR plus 1.1 mg of AgNPs. Knopp hardness (HK), surface roughness (Ra and Rz) and color alteration according to the CIE Lab were measured. Specimens were then evaluated in vitro with regard to C. albicans biofilm formation through formed colony count (CFU/mL). Scanning Electron Microscopy (SEM) and Atomic force microscopy (AFM) analyses were performed. Results: The addition of AgNPs of both concentrations changed Ra, Rz and HK significantly. There was statistically significant difference for L (p=0.00); a*(p=0.00) and b*(p=0.00) parameters. There were no differences between Ag1 and Ag2 biofilm formation, but the comparison of both with the control group presented a significant reduction (p=0.0091) on biofilm formation. SEM and AFM images showed no signs of NPs clustering. Conclusion: It can be concluded tha AgNPs incorporation in HAAR was effective in reducing C. albicans activity, with a slight change in color and hardness of the material, being effective therefore, in regions such as the dental prostheses palate, which have lesser aesthetic appeal.KeywordsAcrylic resins; Silver; Antimicrobial agents.

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IMMERSION OF HEAT POLYMERIZED ACRYLIC RESIN DENTAL BASE IN ARAK BALI AGAINST SURFACE ROUGHNESS

Interdental Jurnal Kedokteran Gigi (IJKG) ◽

10.46862/interdental.v17i1.2140 ◽

2021 ◽

Vol 17 (1) ◽

pp. 22-26

Author(s):

Kadek Ayu Wirayuni ◽

◽

I Made Hendri Dwi Saputra ◽

Keyword(s):

Surface Roughness ◽

Acrylic Resin ◽

Control Group ◽

Surface Strength ◽

Denture Base ◽

A Value ◽

Removable Denture ◽

Significant Difference ◽

Post Test ◽

Oral Tissue

Introduction: The denture base is the part of the removable denture that is supported by good adaptation to the underlying oral tissue. Most of the denture bases are made of acrylic or polymethyl methacrylate resin, better known as PMMA. However, the acrylic resin also has disadvantages such as easily broken and absorbs liquids both water and chemicals. The chemical absorption like alcohol, ethanol, and some drinks that contain acidic materials will chemically be induced with acrylic resin and settle in the pores of the acrylic resin. The chemical damage or defect creates roughness on the surface of the acrylic resin which can cause cracking or crazing and a decrease in surface strength and hardness. Materials and Methods: The method used in this research was a laboratory experimental design with a post-test-only control group using 12 samples consisting of 2 different types of samples by measuring the surface roughness of the acrylic resin after immersing the sample with a predetermined time. Results and Discussions: One-way ANOVA test results showed a significant difference in surface roughness after the samples immersion with a value of p = 0.006 (p <0.05). Conclusions: Based on this research, can be concluded that there is an increase in the surface roughness of the heated polymerized acrylic resin for 3 hours and 4 hours of immersion. The longer the heated polymerized acrylic resin is soaked in arak hence the level of surface roughness increases.

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Effect of Different Dentifrices on the Surface Roughness of Acrylic Resins: An in vitro Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-2106 ◽

2017 ◽

Vol 18 (8) ◽

pp. 679-682

Author(s):

Nitin Gautam ◽

Aditi Sharma ◽

Unjum Bashir ◽

Sisir Rapolu ◽

Nallamilli Mamatha ◽

...

Keyword(s):

Surface Roughness ◽

In Vitro Study ◽

Positive Association ◽

Acrylic Resin ◽

Control Group ◽

Distilled Water ◽

Acrylic Resins ◽

Type Size ◽

Utmost Care

ABSTRACT Aim This study was undertaken to study the effect of three most commonly used dentifrices for denture cleaning and to find out any positive association between number of strokes by toothbrush and surface roughness of acrylic resin. Materials and methods About 40 acrylic rectangular blocks with high finish were polished until surface roughness was calculated as 0 µm. The materials tested were distilled water as a control group, Patanjali Dant Kanti, Colgate Total Cream, and Cleansodent as dentifrices. Stroking was done with dentifrices, and surface roughness readings were recorded at 1,000, 9,000, and 18,000 strokes. Results Patanjali Dant Kanti was found to have maximum abrasive potential followed by Colgate Total Cream, followed by Cleansodent and least by distilled water. Conclusion Surface roughness was found to be directly proportional to the type, size, and fineness of the abrasive component used; the professional denture cleanser (Cleansodent) has less abrasive potential than the regular toothpastes. Among those tested, the highest abrasive potential was found in Patanjali Dant Kanti and lowest by Cleansodent (denture cleanser). Clinical significance The patient as well as dentist should choose the dentifrice with utmost care noting the size and type of abrasives used. Washing the dentures normally with water without toothbrush daily and cleaning of dentures once in 10 to 15 days with a soft toothbrush and professional denture cleanser should be the line of maintenance of dentures. How to cite this article Gautam N, Sharma A, Bashir U, Rapolu S, Mamatha N, Sravani S. Effect of Different Dentifrices on the Surface Roughness of Acrylic Resins: An in vitro Study. J Contemp Dent Pract 2017;18(8):679-682.

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Influence of Toothbrush Abrasion and Surface Treatments on Roughness and Gloss of Polymer-Infiltrated Ceramics

Polymers ◽

10.3390/polym13213694 ◽

2021 ◽

Vol 13 (21) ◽

pp. 3694

Author(s):

Nawaf Labban ◽

Mohammad D. Al Al Amri ◽

Sarah M Alnafaiy ◽

Saleh M. Alhijji ◽

Mohammad A. Alenizy ◽

...

Keyword(s):

Surface Roughness ◽

Mean Value ◽

Control Group ◽

P Value ◽

Distilled Water ◽

Storage Medium ◽

Significant Difference ◽

Toothbrush Abrasion ◽

Surface Gloss

The aim of this study was to compare the surface roughness and gloss of polymer-infiltrated ceramics after simulated in vitro toothbrushing in different storage mediums. Four polymer- infiltrated ceramics were evaluated, Lava ultimate (LU), Vita enamic (EN), Shofu (SH), and Crystal ultra (CU). The control group was a feldspathic ceramic, Vita Mark II (VM). One hundred and twenty specimens (12 × 14 × 2.5 mm) were prepared using a precision saw. For each material (n = 24), the specimens were allocated into two groups, polished and stained. The specimens of each group were stored (for 7 days) in either citric acid (0.2N) or distilled water. Data for surface gloss (ΔE*SCE-SCI) and roughness (Ra) were evaluated before (baseline) and after simulated toothbrushing. For toothbrushing simulation, a toothpaste slurry containing a toothpaste of 100 relative dentin abrasion (RDA) and 0.3 mL distilled water was used for 3650 cycles (7300 strokes) for each specimen. Data were analyzed using t-test and ANOVA. A p-value of ≤ to 0.05 was considered significant. The highest mean value of surface gloss was identified in CU (stained—water) (4.3 (0.47)) (ΔE*) and EN (stained—acid) (4.3 (1.00)) (ΔE*) specimens, whereas the lowest mean value was shown by SH (stained—acid) (2.04 (0.42)) (ΔE*) samples. The highest mean value of surface roughness was observed in SH (0.40 (0.99)) Ra (stained—acid) whereas the lowest in VM (0.13 (0.039)) Ra (polished—water). A significant difference (p < 0.05) was observed in surface roughness and gloss between the materials with simulated toothbrushing, except in VM and LU, respectively. Therefore, it can be concluded that simulated toothbrushing impacts on surface roughness and gloss, irrespective of the storage medium.

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In Vitro Antifungal Evaluation of Seven Different Disinfectants on Acrylic Resins

BioMed Research International ◽

10.1155/2014/519098 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9 ◽

Cited By ~ 7

Author(s):

A. Z. Yildirim-Bicer ◽

I. Peker ◽

G. Akca ◽

I. Celik

Keyword(s):

Surface Roughness ◽

Candida Albicans ◽

Uv Light ◽

Acrylic Resin ◽

Cost Effective ◽

Alternative Methods ◽

Acrylic Resins ◽

Significant Difference ◽

White Vinegar

Objective. The aim of this study was to evaluate alternative methods for the disinfection of denture-based materials.Material and Methods. Two different denture-based materials were included in the study. Before microbial test, the surface roughness of the acrylic resins was evaluated. Then, the specimens were divided into 8 experimental groups(n=10), according to microorganism considered and disinfection methods used. The specimens were contaminated in vitro by standardized suspensions ofCandida albicansATCC#90028 andCandida albicansoral isolate. The following test agents were tested: sodium hypochlorite (NaOCl 1%), microwave (MW) energy, ultraviolet (UV) light, mouthwash containing propolis (MCP), Corega Tabs, 50% and 100% white vinegar. After the disinfection procedure, the number of remaining microbial cells was evaluated in CFU/mL. Kruskal-Wallis, ANOVA, and Dunn’s test were used for multiple comparisons. Mann WhitneyUtest was used to compare the surface roughness.Results. Statistically significant difference(P<0.05)was found between autopolymerised and heat-cured acrylic resins. The autopolymerised acrylic resin surfaces were rougher than surfaces of heat-cured acrylic resin. The most effective disinfection method was 100% white vinegar for tested microorganisms and both acrylic resins.Conclusion. This study showed that white vinegar 100% was the most effective method for tested microorganisms. This agent is cost-effective and easy to access and thus may be appropriate for household use.

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Surface Roughness on the Slots and Wings of Various Ceramic Self-Ligating Brackets and their Potential Concern on Biofilm Formation

Journal of Clinical Pediatric Dentistry ◽

10.17796/1053-4625-44.6.10 ◽

2020 ◽

Vol 44 (6) ◽

pp. 451-458

Author(s):

Ki-Ho Park ◽

Se Jik Han ◽

Samjin Choi ◽

Kyung Sook Kim ◽

Steven Park ◽

...

Keyword(s):

Surface Roughness ◽

Atomic Force Microscopy ◽

Chemical Composition ◽

Biofilm Formation ◽

Control Group ◽

X Ray ◽

Force Microscopy ◽

Atomic Force ◽

Significant Difference ◽

Orthodontic Materials

Objective: The surface roughness of various orthodontic materials could affect biofilm formation and friction. The purpose of this study was to examine the surface roughness and chemical composition of the slots and wings of several ceramic self-ligating brackets. Study design: Four types of ceramic self-ligating brackets were separated into experimental groups (DC, EC, IC, and QK) while a metal self-ligating bracket (EM) was used as the control group. Atomic force microscopy and energy-dispersive x-ray spectroscope were used to examine the surface roughness and chemical composition of each bracket slot and wing. Results: The control group was made of ferrum and chrome while all the experimental groups were comprised of aluminum and oxide. There was a statistically significant difference in the roughness average (Sa) among the various self-ligating brackets (p< 0.001 in slots and p<0.01 in the wing). The slots in the EC group had the lowest Sa, followed by the DC, IC, control, and QK groups. The wings in the IC group had the lowest Sa, followed by the EC, DC, control, and QK groups. Conclusions: There is a significant difference in the surface roughness of the slots and wings among several types of ceramic self-ligating brackets.

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Long-Term Sorption and Solubility of Zirconia-Impregnated PMMA Nanocomposite in Water and Artificial Saliva

Materials ◽

10.3390/ma13173732 ◽

2020 ◽

Vol 13 (17) ◽

pp. 3732

Author(s):

Saleh Zidan ◽

Nikolaos Silikas ◽

Julfikar Haider ◽

Julian Yates

Keyword(s):

Artificial Saliva ◽

Statistical Tests ◽

In Vitro Study ◽

Acrylic Resin ◽

High Impact ◽

Control Group ◽

Denture Base ◽

Significant Difference ◽

Zirconia Nanoparticles

Exposure of denture base acrylic resins to the oral environment and storage media for extended periods of time results in sorption of saliva or water, leading to a reduction in physical properties and thus clinical service life. The purpose of this in vitro study was to assess the sorption and solubility of high-impact heat-polymerised denture base acrylic resin (HI PMMA) impregnated with zirconia nanoparticles after being stored for 180 days in distilled water (DW) and artificial saliva (AS). The specimens were divided into six groups for each storage medium, according to the concentration of zirconia nanoparticles (0, 1.5, 3.0, 5.0, 7.0, and 10.0 wt.%). Data were statistically analysed for sorption and solubility using one-way and two-way ANOVA statistical tests. Sorption in DW and AS for all groups containing zirconia showed sorption values lower than the control group at 90 days, though not significantly different (p > 0.05) compared to the control group. For both the DW and AS groups, the lowest solubility value was measured in the group containing 3 wt.% zirconia, however, there was no significant difference compared to the control group except when observing 10 wt.% zirconia in AS, which showed a significantly higher solubility (p < 0.05). High-impact PMMA, impregnated with low concentrations of ZrO2, showed the lowest sorption and solubility in both media, but was not significantly different compared to pure HI PMMA.

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The Effect of Alcoholic Beverages on Surface Roughness of Acrylic Denture Base Material

SONDE (Sound of Dentistry) ◽

10.28932/sod.v5i1.2328 ◽

2020 ◽

Vol 5 (1) ◽

pp. 36-43

Author(s):

Gladis Aprilla Rizki ◽

Sri Wahyuningsih Rais ◽

Martha Mozartha

Keyword(s):

Surface Roughness ◽

Artificial Saliva ◽

Alcoholic Beverage ◽

Base Material ◽

Acrylic Resin ◽

Alcoholic Beverages ◽

Control Group ◽

Test Surface ◽

Denture Base ◽

Significant Difference

Alcoholic beverages can be consumed in any group age, and it may be consumed by an individual using denture. Fluid absorption by heat-cured acrylic resin as a material of a denture base was able to cause an increase in its surface roughness. Absorption of an organic solvent such as the ethanol in an alcoholic beverage(s) could even increase the effect. This study aimed to evaluate the effect of alcohol beverages on surface roughness of heat-cured acrylic resin denture base. Samples (n=24) were prepared from heat-cured acrylic resin (25x25x5 mm). They were divided into 4 groups and the pre-test surface roughness was measured. Samples of each group were immersed for 10 minutes into the solution (distilled water as the control group, beer, wine, and whiskey as the test groups). After stored in artificial saliva for 23 hours, the samples were immersed into the solution, completing a period of 24 hours. This procedure was performed for 7 consecutive days and the post-test surface roughness was measured. Data were statistically analyzed using the Kruskal-Walis test. There was a significant difference in surface roughness measurement before and after the immersion (p<0.05). Whiskey was most affecting the surface roughness of heat-cured acrylic resin denture base. Alcoholic beverages could increase the surface roughness of heat cure acrylic resin denture base. Keywords: Alcoholic beverages; Heat-cured acrylic denture base; Surface roughness

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PENGARUH POSISI SERAT KACA (FIBERGLASS) YANG BERBEDA TERHADAP KEKUATAN FLEKSURAL FIBER REINFORCED ACRYLIC RESIN

ODONTO Dental Journal ◽

10.30659/odj.3.2.128-132 ◽

2016 ◽

Vol 3 (2) ◽

pp. 128

Author(s):

Aprilia Dian Fatimina ◽

Benni Benyamin ◽

Helmi Fathurrahman

Keyword(s):

Acrylic Resin ◽

Bending Test ◽

Control Group ◽

Fiber Reinforced ◽

Three Point Bending ◽

Significant Difference ◽

Bottom Side ◽

Group 3 ◽

Post Hoc

Background: One of factor that increases the flexural strenght of fiberreinforced acrylic resin is a fiberglass position . Fiberglass is one of type that can be used in dentistry. The aim of this was to determine the influence of position of fiberglass to the flexural strenght of fiber reinforced acrylic resin.Method: This study was in vitro laboratory experimental. Samples was 16plate spesimens (65x10x2.5mm). The study group was divided into 4 group : 3 groups of fiber reinforced acrylic resin were given fiberglass at the upper, middle, and bottom side and 1 control group of resin acrylic without fiberglass. All of groups would be in the flexural strenght test with a three-point bending test using a universal testing machine.Result: Based on One Way ANOVA test showed that there were significantvalue 0.000 (p<0.05), it concluded that there were significant influencebetween all the groups. Based on the LSD Post Hoc test showed that therewere significant value between all of groups with fiberglass reinforced andcontrol group without fiberglass reinforced. Comparisson between the group that given fiberglass in a upper and middle side with the group that given in bottom side showed value of significant difference (p < 0.05).Conclusion: The result of study was concluded that there was an influenceon the position of fiberglass to flexural strenght of fiber reinforced acrylic resin

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Perbedaan Kekasaran Permukaan Resin Akrilik Heat Cured Setelah Penyikatan Dengan Ekstrak Daun Sereh Konsentrasi 30% Dan 60% Dalam Pasta Gigi

DENTA ◽

10.30649/denta.v13i1.178 ◽

2019 ◽

Vol 13 (1) ◽

Author(s):

Paulus Budi Teguh ◽

Linda Rochyani ◽

Clarissa Valerie Wardojo

Keyword(s):

Surface Roughness ◽

Acrylic Resin ◽

Negative Control Group ◽

Positive Control ◽

Negative Control ◽

Positive Control Group ◽

Control Group ◽

Cymbopogon Citratus ◽

Significant Difference ◽

Maximum Limit

Background: Tooth loss can be replaced by the use of dentures. Cleaning of dentures by brushing using toothpaste can cause surface roughness because of abrasive materials. The use of toothpaste can be replaced with paste of extract Cymbopogon citratus because it has antibacterial and antifungal effects. Purpose: to determine the effect of brushing using paste of extract Cymbopogon citratus on the surface roughness of heat cured acrylic resin. Methods: Sample were heat cured acrylic resin (62.5 x 10 x 2.5) mm, divided into 4 groups consist of negative control group was brushed with basic paste, positive control group was brushed with herb paste, and two groups were brushed with paste of Cymbopogon citratus extract with 30% and 60% concentrations. Brushing was done for 3 minutes with 60 brushing times and then measured with surface roughness tester. The data was processed by ANOVA test. Result: The average surface roughness in K-, K+, P1, and P2 were 0,1217, 0,3433, 0,1633, and 0,27 μm. There was significant difference between negative control group and positive control group; negative control group with P1 and P2 group; positive control group with P1 and P2 group; P1 group with P2 group (P <0.05). Conclusion: The paste of Cymbopogon citratus extract concentration of 30% was effectively used because the level of surface roughness below the maximum limit of recommended surface roughness of dentistry material which is 0,2 μm. The 60% concentration paste of Cymbopogon citratus extract was less effective because the level of surface roughness above the maximum limit of surface roughness is recommended.

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Effect of Henna Addition on the Surface Roughness and Hardness of Polymethylmethacrylate Denture Base Material: An In-vitro Study

10.20944/preprints201704.0113.v1 ◽

2017 ◽

Author(s):

Amal Nawasrah ◽

Mohammed Gad ◽

Mai El Zayat

Keyword(s):

Surface Roughness ◽

Base Material ◽

In Vitro Study ◽

Acrylic Resin ◽

Control Group ◽

Denture Base ◽

Hardness Tester ◽

Measure Surface Roughness ◽

New Type

Statement of problem: Henna has been added to polymethylmethacrylate (PMMA) as a new type of antifungal agent; however, its effect on the latter’s physical properties has not been investigated. Purpose: This study aimed to evaluate the effect of the addition of various henna concentrations on the surface roughness and hardness of PMMA denture base material. Materials and Methods: A total of 99 specimens of rectangular-shaped (10×20×3 mm3) acrylic specimens were prepared from heat-cured acrylic resin. Specimens were divided into one control group without the addition of henna and five test groups, which were prepared by adding Yamani henna powder to acrylic powder at concentrations of 1wt%, 2.5wt%, 5wt%, 7.5wt%, and 10wt%. The polymer was added to the monomer before being mixed, packed, and processed using the conventional water bath method. After processing, specimens were finished and polished, then kept in distilled water for 48+2 h. A profilometer and Vickers hardness tester were used to measure surface roughness and hardness respectively. Statistical data analysis was conducted via SPSS version 20.0 (IBM, USA). Results: The addition of henna at varying concentrations significantly increased surface roughness values (P ≤ 0.01) while decreasing hardness (P ≤ 0.0001). The most favorable addition value was 1% henna between all henna groups. Conclusion: The addition of henna to the acrylic resin may negatively affect the surface properties of PMMA acrylic denture base.

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