scholarly journals Surface roughness of two Polyamide Material Types Used in the Manufacture of Denture Base Compared with a Type of Heat-cured Acrylic Resin

2017 ◽  
Vol 8 (3) ◽  
Author(s):  
Mehrdad Eghtedari ◽  
Saghar Ghanavati ◽  
Ali Rohani ◽  
Mehdi Parchami
Keyword(s):  
Surface Roughness ◽  
Acrylic Resin ◽  
Denture Base

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

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.

scholarly journals Effect of Denture Base Fabrication Technique on Candida albicans Adhesion In Vitro

Materials ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 221
Author(s):  
Avi Meirowitz ◽  
Arkadi Rahmanov ◽  
Eti Shlomo ◽  
Helena Zelikman ◽  
Eran Dolev ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Candida Albicans ◽  
3D Printing ◽  
Oral Candidiasis ◽  
Acrylic Resin ◽  
Denture Base ◽  
Denture Stomatitis ◽  
Heat Curing ◽  
Vitro Effect

Denture stomatitis is a common manifestation of oral candidiasis affecting some 65% of denture wearers. This condition is initiated by the adherence of Candida albicans to denture base acrylic resin. The present study aimed to test the in vitro effect of traditional and novel fabrication methods on Candida albicans adhesion to denture base samples. Denture based acrylic discs were fabricated using: (i) computerized milling, (ii) 3D printing, (iii) heat curing, and (iv) cold curing. Discs were tested for surface roughness (Ra), hydrophobicity (contact angle), mucin adsorption (Bradford assay), and Candida albicans adhesion. 3D printing significantly increased microbial cell adhesion as compared with heat curing, and computerized milling significantly decreased it. These results were associated with mucin adsorption levels rather than surface roughness. Results suggest that 3D printing may increase the risk for developing denture stomatitis, whereas computerized milling may decrease it as compared with traditional heat curing denture base fabrication.

scholarly journals Antibiofilm and Protein-Repellent Polymethylmethacrylate Denture Base Acrylic Resin for Treatment of Denture Stomatitis

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1067
Author(s):  
Salwa O. Bajunaid ◽  
Bashayer H. Baras ◽  
Abdulrahman A. Balhaddad ◽  
Michael D. Weir ◽  
Hockin H. K. Xu
Keyword(s):  
Surface Roughness ◽  
Acrylic Resin ◽  
Control Group ◽  
Solution Ph ◽  
Biofilm Growth ◽  
Denture Base ◽  
Denture Stomatitis ◽  
Colony Forming Unit ◽  
Microbial Infections ◽  
Unit Reduction

Candida albicans (C. albicans) biofilm is a common etiological factor in denture stomatitis. The purpose of this study was to investigate the effects of incorporating 2-methacryloyloxyethyl phosphorylcholine (MPC) as a protein repellent into a new high-impact denture acrylic (HIPA) resin on the surface roughness, solution pH, and C. albicans biofilm adhesion to the denture base. The new acrylic denture resin base was formulated by mixing MPC into HIPA resin at mass fractions of 1.5%, 3%, and 4.5%. Surface roughness was measured using a Mitutoyo surface roughness tester. C. albicans biofilm growth and viability were assessed via colony forming unit counts. The pH of the biofilm growth medium was measured using a digital pH meter. Adding MPC to the HIPA resin at percentages of 1.5% and 3% increased the roughness values significantly (p < 0.05), while adding 4.5% MPC resulted in no difference in roughness values to that of the control group (p > 0.05). All experimental groups demonstrated neutral pH values (pH ≅ 7) and were not significantly different from each other (p > 0.05). Incorporating 2-methacryloyloxyethyl phosphorylcholine at 4.5% resulted in a significant (≅1 log) colony-forming unit reduction compared with the control group with 0% MPC (p < 0.05). A fungal-retarding denture acrylic resin was developed through the incorporation of MPC for its protein-repelling properties. This newly developed denture acrylic material has the potential to prevent oral microbial infections, such as denture stomatitis.

scholarly journals Efektifitas Penggunaan Pasta Biji Kopi Robusta Sebagai Pembersih Gigi Tiruan Terhadap Kekasaran Permukaan Resin Akrilik Heat Cured

2018 ◽  
Vol 6 (2) ◽  
pp. 339
Author(s):  
Afthin Maritta Noviyanti ◽  
Rahardyan Parnaadji ◽  
FX Ady Soesetijo
Keyword(s):  
Surface Roughness ◽  
Acrylic Resin ◽  
Total Sample ◽  
Control Group ◽  
Coffee Bean ◽  
Control Group Design ◽  
Denture Base ◽  
Robusta Coffee ◽  
Coffee Beans ◽  
Electric Toothbrush

The most used denture base materials is heat cured acrylic resin. The disadvantages of acrylic resin are easy to absorb water and porosity that can increase surface roughness. The surface roughness can facilitate the attachment of microorganisms and accumulation of plaque. The cleansing of mechanical denture use electric toothbrush and denture cleanser paste. This paste uses natural materials from robusta coffee beans that decrease surface roughness. To determine the effectivity of robusta coffee beans paste as a denture cleanser to the surface roughness of heat cured acrylic resin.  This study was an experimental laboratory with the research design the post test only  control group design. Total sample of 36 samples in size (65 x 10 x 2,5) mm which consisted of 4 groups: control group without brushing, group A  brushed with electric toothbrush and a placebo paste, group B brushed with electric toothbrush and robusta coffee beans paste 25%, and group C  brushed with electric toothbrush and robusta coffee beans paste 50%. Brushing was done for 22 minutes, then measured the surface roughness of dentures. Robusta coffee bean paste was less effective as a denture cleanser agent against the surface roughness of the heat cured acrylic resin. Robusta coffee beans paste 50% can be used as a denture cleanser. Keyword: acrylic resin, electric toothbrush, robusta coffee bean paste, surface roughness  

scholarly journals Changes in Surface Roughness of Acrylic Resin Heat Cured after Immersed in Yogurt

2018 ◽  
Vol 1 (1) ◽  
pp. 171-175
Author(s):  
Kholidina Imanda Harahap ◽  
Lasminda Syafiar ◽  
Sintiya Karolina Tarigan
Keyword(s):  
Surface Roughness ◽  
Exposure Time ◽  
Immersion Time ◽  
Base Material ◽  
Acrylic Resin ◽  
T Test ◽  
Denture Base ◽  
Acidic Solutions ◽  
Before And After ◽  
Digestive Health

To mantain digestive health, people usually consume yogurt that has acidity 4-5. Acidic solutions can cause the surface roughness of acrylic resin heat cured is used as denture base material. Denture with rough surfaces facilitate the attachment of plaque and bacteria that can degrade the cleanliness and health of the patient. The purpose of this study was to analyze the surface roughness of acrylic resin heat cured after being immersed in yogurt with different immersion time. Thirty acrylic resin heat cured specimens (12 mm in length, 12 mm in wide and 2 mm height) were prepared and divided into three experimental groups (n=10): I ( specimens immersed in yogurt for 60 minutes), II (specimens immersed in yogurt for 120 minutes) and III (specimens immersed in yogurt for 180 minutes). Surface roughness before and after immersion was measured using Profilometer. Data will be analyzed using T test (p<0,05). After immersion, the specimens showed significantly different on surface roughness (p=0,04). Among the experimental groups, immersion for 180 minutes showed the highest surface roughness value than 60 and 120 minutes. It can be concluded that yogurt can make surface roughness of acrylic resin heat cured. Increasing surface roughness depends on exposure time of yogurt on acrylic resin heat cured. To mantain a digestive health, people usually consume yogurt that has acidity of 4-5. Acidic solutions can cause the surface roughness of heat cured acrylic resin which is used as denture base material. Denture with rough surfaces facilitates the presence of plaque and bacteria that can degrade the cleanliness and health of the patient. The objective of this study was to analyze the surface roughness of heat cured acrylic resin after immersed in yogurt with different immersion time. Thirty heat cured acrylic resin specimens (12 mm in length, 12 mm in wide and 2 mm in height) were prepared and divided into three experimental groups (n=10): I ( specimens were immersed in yogurt for 60 minutes), II (specimens were immersed in yogurt for 120 minutes) and III (specimens were immersed in yogurt for 180 minutes). Surface roughness before and after immersion was measured using Profilometer. Data were analyzed using T test (p<0,05). After immersion, the specimens showed significantly different on surface roughness (p=0,04). Among the experimental groups, immersion for 180 minutes showed the highest surface roughness value than 60 and 120 minutes. It could be concluded that yogurt could make surface roughness of heat cured acrylic resin . Increasing surface roughness depended on exposure time of yogurt on heat cured acrylic resin.

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

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

Denture Plaque and Adherence of Candida Albicans To Denture-Base Materials in Vivo and in Vitro

1999 ◽  
Vol 10 (1) ◽  
pp. 99-116 ◽  
Author(s):  
D.R. Radford ◽  
SJ Challacombe ◽  
J.D. Walter
Keyword(s):  
Surface Roughness ◽  
Clinical Significance ◽  
Acrylic Resin ◽  
In Vitro Studies ◽  
In Vivo Studies ◽  
Denture Base ◽  
Base Materials ◽  
Experimental Protocols

The aim of this paper is to review our understanding of the mechanisms and clinical significance of adhesion of C. albicans to denture-base materials in relation to denture plaque and denture-related stomatitis. Earlier reports in the literature of a 65% prevalence level of denture-related stomatitis seem to be exaggerated. More recent studies indicate that denture-related stomatitis is considerably less common, particularly in normal healthy subjects. The etiology of the condition is discussed in this review, and although much of the literature supports the view that the condition is strongly associated with C. albicans, this is not always so. In some subjects, the cause appears to be related to a non-specific plaque. This review also considers the role of denture plaque in the pathogenesis of denture-related stomatitis, the sequential development of denture plaque, and its colonization by Candida organisms. Designing controlled in vivo studies is difficult, and as a consequence, many investigators have had to resort to in vitro studies. The majority of these studies have attempted to investigate the hydrophobicity of C. albicans, relating the surface free-energy of denture-base materials, particularly acrylic resin, to that of the organism. Surprisingly little work has been directed at surface roughness and how it affects retention of organisms. Further, no attention has been paid to the properties and character of the surface, other than average surface roughness, as it affects adhesion. A comparison of results from in vitro studies on the effect on adhesion of pre-coating the surfaces of denture-base materials with saliva has produced equivocal conclusions. This is largely due to little standardization of experimental protocols between studies, particularly in the collection and handling of the saliva used. In conclusion, the review strongly supports the suggestion that adherence of C. albicans to denture-base materials in vitro is related to the hydrophobicity of the organism. The clinical significance of the observation and the mechanisms for the development and maturation of denture plaque are yet to be understood. There is a clear need for further investigation of other factors that may moderate the adhesion of organisms and subsequent colonization of denture-base materials.

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