scholarly journals SILVER-NANOPARTICLES MODIFIED SOFT LINER MATERIAL FOR OBTURATOR WEARERS WITH ACQUIRED PALATAL DEFECT. MICROBIOLOGICAL CROSSOVER STUDY

2018 ◽  
Vol 64 (2) ◽  
pp. 1837-1844
Author(s):  
Radwa Emera ◽  
Ahmed Khalifa ◽  
Noha Sheta
Keyword(s):  
Silver Nanoparticles ◽  
Crossover Study ◽  
Liner Material ◽  
Soft Liner ◽  
Palatal Defect

scholarly journals Antifungal Efficacy of a Permanent Silicon Soft Liner Containing Silver Nanoparticles

2021 ◽  
Author(s):  
Sareh Habibzadeh ◽  
Solmauz Eskandarion ◽  
Seyed Mahmoud Amin Marashi ◽  
Ghazal Yunesi ◽  
Mohamadjavad Kharazifard
Keyword(s):  
Silver Nanoparticles ◽  
Mechanical Stability ◽  
Colony Count ◽  
Control Group ◽  
Culture Dish ◽  
Agar Culture ◽  
Liner Material ◽  
Soft Liner ◽  
Antifungal Efficacy

Objectives: This study aimed to evaluate the in vitro antifungal efficacy of addition of silver nanoparticles (SNPs) to Mucopren® silicone soft liner material. Materials and Methods: Twenty disc samples (8 × 2 mm) of Mucopren® silicone soft liner containing 0wt% (control), 0.5wt%, 1wt%, 2wt%, and 3wt% SNPs were fabricated. Samples were powdered and added to 150 mL of Sabouraud dextrose agar culture medium and placed on separate culture dish plates. Each plate was inoculated with 106 colony forming units per milliliter (CFUs/mL) of Candida albicans (PTCC 5027) according to the CLSI protocol, and incubated at 37℃. The colony count was verified at 24 h, and the antifungal effect of the samples was evaluated according to the percentage of viable cells in the 2 subgroups with/without thermocycling. Data were analyzed using SPSS version 20 via ANOVA and t-test (P<0.05). Results: All experimental groups showed higher antifungal activity than the control group, and this effect was dose-dependent (P<0.05). The lowest colony count was recorded in the 3wt% group. Thermocycling had no significant effect on the antifungal efficacy, except in 0.5wt% concentration of SNPs (P=0.013). Conclusion: Addition of SNPs to Mucopren soft liner conferred antifungal effects. Further mechanical stability and toxicity studies are still required.

scholarly journals The Effectiveness of Aluminum Potassium Sulfate Micro-Particles Addition into Soft Denture Lining Material on Tensile strength and Peel bond Strength of Soft Denture Lining Material

2019 ◽  
Vol 31 (4) ◽  
Author(s):  
Ali Mohad ◽  
Abdalbseet A Fatalla
Keyword(s):  
Tensile Strength ◽  
Bond Strength ◽  
Human Disease ◽  
Potassium Sulfate ◽  
Liner Material ◽  
Micro Particles ◽  
Lining Material ◽  
Soft Liner ◽  
Time Periods

Naturally available products have been used widely for centuries in handling human disease. The present study aimed to determine the effect of aluminum potassium sulfate addition into the soft liner on tensile strength and peel bond strength. The effect of aluminum potassium sulfate evaluated by two methods, first one include incorporation of KAL (SO4)2 into soft liner monomer in concentration (2%,3% by wt.) while the second method include immersion of soft liner specimens in solution of KAL(SO4)2 in concentration(5%,10% percent) during time periods (0,10 minutes). In conclusions, the results of current study encourage use KAL (SO4)2 within soft liner material

scholarly journals A Novel Approach to Treat Traumatized Alveolar Ridges: Two Case Reports

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Mahesh Verma ◽  
Sneha Menghani ◽  
Jyoti Devi ◽  
Rekha Gupta ◽  
Shubhra Gill
Keyword(s):  
Oral Mucosa ◽  
Alveolar Bone ◽  
Case Reports ◽  
Denture Base ◽  
Liner Material ◽  
Novel Approach ◽  
Soft Liner

Functional forces are transmitted to the basal seat mucosa through a hard denture base during mastication. Such hard base dentures are not comfortably tolerated in patients with fragile oral mucosa and will cause sore spots, masticatory pain, and further resorption of alveolar bone. Soft liners materials can be advocated successfully to manage such clinical situations. The soft liner material absorbs masticatory forces by means of the cushioning effect and distributes occlusal forces uniformly to prevent trauma to compromised residual ridges.

scholarly journals Structure-property Relation of a Soft Liner Material Used in Denture Applications

2007 ◽  
Vol 26 (3) ◽  
pp. 329-334 ◽  
Author(s):  
Orhan Murat DOGAN ◽  
Selda KESKIN ◽  
Arife DOGAN ◽  
Hande ATAMAN ◽  
Ali USANMAZ
Keyword(s):  
Structure Property ◽  
Liner Material ◽  
Soft Liner ◽  
Property Relation

scholarly journals A clinical study of adherence of candida albicans to an improved NBR denture soft lining material

2015 ◽  
Vol 05 (03) ◽  
pp. 036-039
Author(s):  
Naeem Ahmed ◽  
Aruna J. Bhandari ◽  
Arti Saluja Sachdev ◽  
Farah Khan ◽  
Shitanshu Malhotra ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Clinical Study ◽  
Oral Hygiene ◽  
Controlled Environment ◽  
Liner Material ◽  
Colony Forming Units ◽  
Lining Material ◽  
Soft Liner ◽  
Material Sample

Abstract30 dentures selected for the study were disinfected using effervescent denture tablets. Then the dentures were trimmed 1.5mm from fitting surface and relined with NBR soft lining material. Sample was scraped from denture fitting surface after one month and two months duration and the changes in colony forming units per mm after each month's time were measured and marked. After one month's duration, 24 samples were reported sterile and 6 showed colonies of Candida albicans & Staphylococcus aureus. After 2 months duration, 28 out of 30 samples became positive with C. albicans & S. aureus colonies and aerobic spore bearing units. NBR soft liner material was sterile till one month of clinical usage so it can be prescribed as a safe soft lining material till one month of clinical usage in a controlled environment of oral hygiene

scholarly journals Evaluation of Bond Strength and Dimensional Accuracy of Soft Liner to Microwave Cured Denture Base Material

2020 ◽  
Vol 10 (2) ◽  
pp. 32-37
Author(s):  
Shilan H. Fatah ◽  
Radhwan H. Hasan
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Base Material ◽  
Mean Value ◽  
Water Bath ◽  
Denture Base ◽  
Liner Material ◽  
Significant Difference ◽  
Soft Liner ◽  
Pmma Surface

Today, soft liners are being widely used in dental practices by their application to the inner surfaces of the denture with hopes to evenly distribute any potential uneven forces, and to provide a cushion effect to the oral mucosa of the patient mouth. The aim of this study is to investigate the influence of (a) polymethylmethacrylate (PMMA) denture base material curing technique, (b) Molloplast B soft liner curing technique, and (c) PMMA surface treatment, on the “shear bond strength” (SBS) between the Molloplast B liner and PMMA. A total of 80 samples were used in this study to evaluate the SBS performance of microwave (Nature-Cryl, Acron Gc, Japan) and conventional water bath (Ivoclar triplex, Liechtenstein) curing techniques of PMMA, and to evaluate the curing technique of soft liner material Molloplast B (DETAX,GERMANY). Surface treatment of PMMA was performed for half of the samples using neodymium:yttrium aluminum-garnet Nd:YAG laser, and the other half of the samples were surface-treated using AL2O3 sandblasting method. The results showed that the highest mean value in conventional water bath-cured soft liner was 26.69 MPa, whereas the lowest mean value for microwave-cured soft liner was 15.22 MPa. No significant difference was observed between the SBS performance regarding the PMMA surface treatment and curing techniques. Conventional water bath curing technique for soft liner treatment improved the SBS performance. Regarding the PMMA curing technique, the conventional water bath achieved higher SBS, yet the difference was not statistically significant. Finally, surface treatment using laser improved the SBS compared to sandblasted method, but the improvement here was also statistically insignificant.

Antifungal property of acrylic denture soft liner containing silver nanoparticles synthesized in situ

2021 ◽  
Vol 106 ◽  
pp. 103589
Author(s):  
Jie Deng ◽  
Lingyan Ren ◽  
Yahui Pan ◽  
Hai Gao ◽  
Xiangfeng Meng
Keyword(s):  
Silver Nanoparticles ◽  
Antifungal Property ◽  
Soft Liner

scholarly journals Effect of Incorporation of Silver Nanoparticles on the Tensile Bond Strength of a Long term Soft Denture Liner

2020 ◽  
Vol 14 (02) ◽  
pp. 268-273
Author(s):  
Sareh Habibzadeh ◽  
Arman Omidvaran ◽  
Solmauz Eskandarion ◽  
Ahmad Reza Shamshiri
Keyword(s):  
Silver Nanoparticles ◽  
Bond Strength ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Analysis Data ◽  
Tensile Bond Strength ◽  
Denture Base ◽  
Heat Cure ◽  
Base Resin ◽  
Soft Liner

Abstract Objectives This study aimed at assessing the effect of the addition of silver nanoparticles (SNPs) to a silicone soft liner on its tensile bond strength to denture base resin. Materials and Methods SNPs were added to Mucopren cold cure soft liner in 0 (control), 0.5, 1, 2, and 3 wt% concentrations and bonded in 120 stainless steel molds with processed heat cure acrylic resin blocks. Liner/resin combination samples were divided into two groups. The first half was stored for 2 days in distilled water at 37°C and then subjected to tensile bond strength, while the other half were thermocycled 3000 times before testing. Mean bond strength, expressed in mega pascals (MPa), was determined in the tensile test with the use of a universal testing machine at a crosshead speed of 5 mm/min. Statistical Analysis Data were analyzed using SPSS via one-way analysis of variance test, t-test, and Tukey’s posthoc, at a 95% confidence level (p < 0.05). Results Addition of SNPs and thermocycling both caused a significant reduction in the tensile bond strength of Mucopren to acrylic resin; however, in the thermocycled group, the bond strength increased with the increase in the concentration of SNPs (p < 0.001). Conclusion Addition of SNPs to Mucopren soft silicone liner reduces its tensile bond strength to denture acrylic resin.

scholarly journals Methods for Candida albicans biofilm formation on temporary soft liner/ Métodos para a formação de biofilme de Candida albicans em reembasador macio temporário

2021 ◽  
Vol 4 (5) ◽  
pp. 21447-21459
Author(s):  
Francine Sumie Morikava ◽  
Gustavo Simão Moraes ◽  
Victoria Schlumberger Cachoeira ◽  
Mayara Precoma Ramalho ◽  
Rafaela Alves da Silva ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Cell Viability ◽  
Biofilm Formation ◽  
Artificial Saliva ◽  
Storage Conditions ◽  
Degree Of Contamination ◽  
Xtt Assay ◽  
Liner Material ◽  
Soft Liner

This study evaluated methods for the contamination of a soft liner material (Softone™) with Candida albicans biofilm. Specimens were either submitted or not to pretreatment in artificial saliva in an orbital incubator, and then held suspended in different positions (horizontal or vertical) and different storage conditions (bacteriological incubator or orbital incubator) during biofilm formation. Eight conditions were tested. All specimens were immersed in C. albicans inoculum and stored in an orbital incubator at 75 rpm or in a bacteriological incubator, both at 37ºC for 90 min. Then, they were washed in PBS, and maintained in RPMI-1640 medium under the same conditions for 48 h. The degree of contamination was determined by the XTT assay. Data were submitted to ANOVA 1-factor/Tukey HSD test (α=0.05). Specimens held horizontally in an orbital incubator showed the highest cell viability, while the ones kept vertically in a bacteriological incubator had the lowest viability (p0.0001). The best condition for C. albicans biofilm formation was obtained when specimens were not submitted to pretreatment in saliva and were held horizontally in an orbital incubator.

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