Surface Roughness Changes in Denture Liners in Denture Stomatitis Patients

2017 ◽  
Vol 30 (6) ◽  
pp. 561-564 ◽  
Author(s):  
Fernanda Valentini ◽  
Murilo Luz ◽  
Noéli Boscato ◽  
Tatiana Pereira-Cenci
Keyword(s):  
Surface Roughness ◽  
Denture Stomatitis ◽  
Denture Liners

scholarly journals Mechanical and Surface Properties of Resilient Denture Liners Modified with Chitosan Salts

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3518
Author(s):  
Maike Herla ◽  
Klaus Boening ◽  
Heike Meissner ◽  
Katarzyna Walczak
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Statistical Analysis ◽  
Surface Properties ◽  
Control Group ◽  
Distilled Water ◽  
Denture Stomatitis ◽  
Antifungal Properties ◽  
Denture Liners ◽  
Antibacterial And Antifungal

Chitosan (CS) and its derivatives show antibacterial and antifungal properties and could help treat and prevent denture stomatitis (DS). Mechanical and surface properties of resilient denture liners were evaluated when modified with CS salts. CS-hydrochloride (CS-HCl) and CS-glutamate (CS-G) were added to resilient denture liners Ufi Gel P and Coe-Soft at four different concentrations (0.1%, 0.2%, 0.4%, 1% w/w) from which specimens were produced, as well as a control group of each material with no added CS salt. Ten specimens per group (Ø 35 mm, height 6 mm) were manufactured. They were stored in distilled water at 37 °C for a total of 30 days (d). Shore A hardness (SHA) and surface roughness (Ra) were evaluated after 24 h (T1), 7 d (T2), 14 d (T3) and 30 d (T4). Kruskal–Wallis and U-test (Bonferroni-Holm adjusted) were used for statistical analysis (p ≤ 0.05). Ra increased significantly once CS salts were added. SHA increased significantly for some groups, but all specimens fulfilled requirements set by ISO 10139-2:2016. Modification with CS salts does not influence the mechanical properties of the modified resilient denture liners in a clinically relevant manner. Despite the increased roughness, the concept is suitable for further studies. Especially antimicrobial/antibiofilm studies are needed.

scholarly journals Erratum to: Incorporation of Fluconazole and Ocimum Sanctum Oil in Soft Denture Liners to Treat Biofilms of Candida albicans Associated with Denture Stomatitis

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Ramandeep Dugal
Keyword(s):  
Surface Roughness ◽  
Physical Properties ◽  
Cell Morphology ◽  
Antifungal Agents ◽  
Inhibitory Concentration ◽  
Surface Hardness ◽  
Ocimum Sanctum ◽  
Denture Stomatitis ◽  
Denture Liners ◽  
Scanning Electron

Purpose: To investigate the In Vitro activity of incorporated antifungal agents like Fluconazole and Ocimum sanctum oil (Tulsi) in the denture soft liners to reduce the risks associated with the biofilms of Candida albicans.Materials and Methods: In the current study, the minimum inhibitory concentration (MIC) of two antifungal agents namely Fluconazole and O. sanctum (Tulsi oil) against C. albicans (ATCC 10231) was evaluated to examine their effect in reducing the count of candida and its biofilms. Analysis of physical properties such as surface roughness and hardness of soft denture liners (test and control) were also performed. The effect of both antifungal agents was also observed on cell morphology of candida cells using scanning electron microscopy (SEM).Results: Studies confirmed MIC value for fluconazole and O. sanctum oil as 600 and 400 µg/ml respectively. Surface hardness and roughness of soft denture material (test) remained unaltered. Finally, SEM studies also proved the effectiveness of incorporated antifungal agents on the cell morphology of C. albicans at their respective MIC values.Conclusions: This approach allows the prolonged drug release in the oral cavity which simultaneously treats the injured denture bearing tissues and also the infection, biofilms of candida without compromising on their physical properties. These studies are significant and have tremendous medicinal and therapeutic relevance.        Keywords: Antifungal Agents; Biofilms; Candida; Scanning Electron Microscope; Soft Liners; Hardness; Surface Roughness; Minimal Inhibitory Concentration; Denture Stomatitis.

Nystatin in denture liners--an alternative treatment of denture stomatitis

BDJ ◽  
1973 ◽  
Vol 135 (2) ◽  
pp. 55-59 ◽  
Author(s):  
W H Douglas ◽  
D M Walker
Keyword(s):  
Alternative Treatment ◽  
Denture Stomatitis ◽  
Denture Liners

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 Incorporation of Fluconazole and Ocimum Sanctum Oil in Soft Denture Liners to Treat Biofilms of Candida albicans Associated with Denture Stomatitis

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Aamir Zahid Godil ◽  
Diksha Bhagat ◽  
Parijat Das ◽  
Ashi Ilyas Kazi ◽  
Ramandeep Dugal ◽  
...  
Keyword(s):  
Physical Properties ◽  
Cell Morphology ◽  
Antifungal Agents ◽  
Surface Hardness ◽  
Ocimum Sanctum ◽  
Denture Stomatitis ◽  
Denture Liners ◽  
And Control ◽  
Prolonged Drug Release

Purpose: To investigate the In Vitro activity of incorporated antifungal agents like Fluconazole and Ocimum sanctum oil (Tulsi) in the denture soft liners to reduce the risks associated with the biofilms of Candida albicans.Materials and Methods: In the current study, the minimum inhibitory concentration (MIC) of two antifungal agents namely Fluconazole and O. sanctum (Tulsi oil) against C. albicans (ATCC 10231) was evaluated to examine their effect in reducing the count of candida and its biofilms. Analysis of physical properties such as surface roughness and hardness of soft denture liners (test and control) were also performed. The effect of both antifungal agents was also observed on cell morphology of candida cells using scanning electron microscopy (SEM).Results: Studies confirmed MIC value for fluconazole and O. sanctum oil as 600 and 400 µg/ml respectively. Surface hardness and roughness of soft denture material (test) remained unaltered. Finally, SEM studies also proved the effectiveness of incorporated antifungal agents on the cell morphology of C. albicans at their respective MIC values.Conclusions: This approach allows the prolonged drug release in the oral cavity which simultaneously treats the injured denture bearing tissues and also the infection, biofilms of candida without compromising on their physical properties. These studies are significant and have tremendous medicinal and therapeutic relevance.

scholarly journals Effect of Denture Cleanser on Weight, Surface Roughness and Tensile Bond Strength of Two Resilient Denture Liners

2012 ◽  
Vol 13 (5) ◽  
pp. 607-611 ◽  
Author(s):  
GS Chandu ◽  
Dayanand Ashok Huddar ◽  
MN Hombesh ◽  
B Sandhyarani ◽  
Girish Shankar Nanjannawar
Keyword(s):  
Surface Roughness ◽  
Bond Strength ◽  
Acrylic Resin ◽  
Tensile Bond Strength ◽  
Weight Changes ◽  
Water Group ◽  
Heat Cure ◽  
Soft Liner ◽  
Denture Liners ◽  
Group 2

ABSTRACT Aim Evaluating effects of a denture cleanser on weight, surface roughness and tensile bond strength on two resilient lining materials. Materials and methods Specimens of heat cure acrylic resin were prepared to verify weight change, surface roughness and tensile bond strength. Specimens were divided into four groups: Relined with resilient liner Visco-gel, soft liner immersed in Clinsodent denture cleanser and water and evaluated immediately, 24 hours, 7 and 15 days. Weight changes, roughness and tensile bond strength were determined and data submitted to statistical analysis. Results Visco-gel specimens immersed in water (group 1) have shown significant increased surface roughness than those immersed in Clinsodent (group 3) during 24 hours, 7 and 15 days. The soft liner specimens immersed in water (group 2) have shown increased surface roughness than those immersed in Clinsodent (group 4) during 24 hours and 7 days. Visco-gel specimens immersed in water have shown significant increased tensile bond strength during 7 and 15 days than those immersed in Clinsodent. The soft liner specimens immersed in water have shown increased tensile bond strength than those immersed in Clinsodent during immediately, 24 hours and 7 days. Conclusion Within limitations of this study, specimens immersed in Clinsodent demonstrated increased weight changes compared with water. Specimens immersed in water demonstrated lesser surface roughness and tensile bond strength compared with specimens immersed in Clinsodent. Clinical significance Resilient denture liners and denture cleansers are most commonly used materials in prosthodontics. Caution should be taken while selecting the materials which cause the detrimental changes on properties of the materials. How to cite this article Huddar DA, Hombesh MN, Sandhyarani B, Chandu GS, Nanjannawar GS, Shetty R. Effect of Denture Cleanser on Weight, Surface Roughness and Tensile Bond Strength of Two Resilient Denture Liners. J Contemp Dent Pract 2012;13(5):607-611.

Effect of a denture cleanser on weight, surface roughness, and tensile bond strength of two resilient denture liners

2003 ◽  
Vol 89 (5) ◽  
pp. 489-494 ◽  
Author(s):  
Renata C.M Rodrigues Garcia ◽  
Blanca L.T Léon ◽  
Viviane M.B Oliveira ◽  
Altair A Del Bel Cury
Keyword(s):  
Surface Roughness ◽  
Bond Strength ◽  
Tensile Bond Strength ◽  
Denture Liners

scholarly journals Influence of immersion time of denture cleansers on the surface roughness of resilient denture liners

2011 ◽  
Vol 26 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Plinio Mendes Senna ◽  
Ana Paula Coelho Vieira ◽  
Bruno Sales Sotto-Maior ◽  
Wander José da Silva ◽  
Altair A. Del Bel Cury
Keyword(s):  
Surface Roughness ◽  
Immersion Time ◽  
Denture Liners ◽  
Denture Cleansers

Roughness measurements of nonlinear optical polymer films by scanning tunneling microscopy

1989 ◽  
Vol 47 ◽  
pp. 22-23
Author(s):  
I. H. Musselman ◽  
R.-T. Chen ◽  
P. E. Russell
Keyword(s):  
Surface Roughness ◽  
Scanning Tunneling Microscopy ◽  
Nonlinear Optical ◽  
Polymer Surface ◽  
Light Extinction ◽  
Scanning Tunneling ◽  
Silicon Substrates ◽  
Tunneling Microscopy ◽  
Optical Polymer ◽  
Total Light

Scanning tunneling microscopy (STM) has been used to characterize the surface roughness of nonlinear optical (NLO) polymers. A review of STM of polymer surfaces is included in this volume. The NLO polymers are instrumental in the development of electrooptical waveguide devices, the most fundamental of which is the modulator. The most common modulator design is the Mach Zehnder interferometer, in which the input light is split into two legs and then recombined into a common output within the two dimensional waveguide. A π phase retardation, resulting in total light extinction at the output of the interferometer, can be achieved by changing the refractive index of one leg with respect to the other using the electrooptic effect. For best device performance, it is essential that the NLO polymer exhibit minimal surface roughness in order to reduce light scattering. Scanning tunneling microscopy, with its high lateral and vertical resolution, is capable of quantifying the NLO polymer surface roughness induced by processing. Results are presented below in which STM was used to measure the surface roughness of films produced by spin-coating NLO-active polymers onto silicon substrates.

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