Statement of Problem:The occurrence porosity in polymethyl methacrylate, the most commonly used denture base material is a problem. The occurrence of oral candidiasis and other infections has also been reported in denture users.Purpose:The aim of this study was to evaluate the effect of addition of an antimicrobial agent, silver zeolite on the porosity of denture base resin, which will be an effective tool in the prevention of oral candidiasis among denture wearers. This study also aims to analyze the effect of polymerization technique on porosity in zeolite incorporated dentures to develop a denture base resin which will be easy to process with optimal mechanical and antimicrobial properties.Materials and Methods:Eighty rectangular resin specimens (65 mm × 40 mm × 5 mm) were divided into one control group (A) and three experimental groups (B – Microwave cured denture base resin specimens, C – Conventionally cured denture base resin incorporated with antibacterial zeolites, D – Microwave cured denture base resin incorporated with antibacterial zeolites) porosity was calculated by measurement of the specimen volume before and after its immersion in water. Data were analyzed using one-way analysis of variance.Results:The mean values of the percent mean porosity were: A = 0.9555%, B = 0.9590%, C = 0.9630%, D = 0.9695%. No significant differences were found in mean porosity among the groups evaluated.Conclusion:Within the limitations of this study, it could be concluded that the addition of zeolites did not result in significant porosity and that the use of microwave processing is a viable option for denture processing.
Individuals affected by ectodermal dysplasia syndromes have abnormalities of the glands, tooth buds, hair follicles, and nail development. Oral finding in ectodermal dysplasia patient are significant and can include multiple abnormalities of the dentition such as anodontia, hy-podontia or malformed and widely spaced peg like teeth, loss of occlusal vertical dimension, protuberant lips and lack of normal alveolar ridge development. This clinical report describes a combined surgical, pedodontic, and prosthodontic approach for the treatment of a patient with hypohidrotic ectodermal dysplasia.
Faulty complete denture can lead to deleterious effects on residual ridges. These deleterious effects are further severed if patient is systematically compromised as in Diabetes mellitus. Decreased resistance to infection, vascular changes, and altered tissue response seen in uncontrolled Diabetes when coupled with faulty denture prosthesis can even lead to gangrenous necrosis. Prosthodontic management of edentulous patient with maxillary defect is a challenging task because there is reduced denture bearing surface compromising adhesion, cohesion and peripheral seal thus affecting retention adversely; reduced support area for denture; air leakage due to poor stability; retentive deficiencies and movement of prosthesis during function. Prosthetic rehabilitation for these patients can be accomplished with minor modifications in procedures like incremental shaping technique for taking impression, modifications in jaw relation, tooth arrangement, and fabrication of hollow bulb obturator along with atraumatic and meticulous care during all the procedures. This clinical report describes a case of gangrenous necrosis of premaxilla caused due to a faulty previous prosthesis; and its prosthodontic management.
Purpose Denture-related stomatitis is probably the most common form of oral candidiasis and its reported prevalence varies widely ranging up to 65%. In this in vitro study, we evaluate the effect of delmopinol application on Candida albicans adherence on heat-cured acrylic resin, cold-cured acrylic resin and microwave-cured acrylic resin. Materials and methods A total of 40 specimens of each type of acrylic resin were made; 20 specimens of each type were contaminated before delmopinol treatment and 20 specimens were contaminated after delmopinol treatment. The each specimen in each tube was individually transferred to a spectrophotometer at 530 nm wavelength in order to measure the turbidity degree, through the transmittance. Aliquots of 10 μl of each tube was then collected and inoculated into agar Sabouraud plates containing 500 mmol/l of sucrose, which was incubated for 24 hours at 37oC, in order to check microbial growth. Two-way ANOVA analysis of variance test and posthoc Turkey's test were carried out to ascertain the level of significance (p < 0.001) of various observations. Results Mean of the turbidity degree of contamination after delmopinol application for heat-cured acrylic resin specimens (A1) 1440.80, colony forming units (CFU) (⨯106/ml), cold-cured acrylic resin specimens (B1) 833.30 CFU (⨯106/ml) and microwave-cured acrylic resin specimens (C1) 944.70 CFU (⨯106/ml) was significantly higher than the mean of the turbidity degree of contamination before delmopinol application for heatcured acrylic resin specimens (A2) 550.85 CFU (⨯106/ml), coldcured acrylic resin specimens (B2) 341.45 CFU (⨯106/ml) and microwave-cured acrylic resin specimens (C2) 451.50 CFU (⨯106/ml). Conclusion In case of contamination after delmopinol application, heat-cured acrylic resin showed maximum reduction in adherence of C. albicans in the study. How to cite this article Shakya P, Jain D, Rahangdale T. Evaluation and Comparison of Effect of Delmopinol Application on Adherence of Candida albicans on Denture Fitting Surface on Three Types of Acrylic Resin: An in vitro Study. Int J Prosthodont Restor Dent 2012;2(4):129-135.
Introduction: Most denture fractures occur within the mouth due to resin flexural fatigue. For example, the deep labial notch at the high labial frenum causes denture breakage, as can deep scratches and generated processing stresses. The rising cost of annual prosthetic repairs is evidence that the problem of total denture fracture has not been solved. The purpose of this investigation was to evaluate the relative improvement in flexural strength between heat-cured polymethyl methacrylate (PMMA) resin reinforced with glass fibers (GF) and basalt fibers (BF) of varied orientations.Material and methods: A total of 150 heat-cured acrylic resin specimens of 65x10x3 mm dimension were prepared, 30 of which were left unreinforced (Group A), 30 of which were reinforced with GF in transverse pattern (Group B), 30 of which were reinforced with GF in meshwork pattern (Group C), 30 of which were reinforced with BF in transverse pattern (Group D), and 30 of which were reinforced with BF in meshwork pattern (Group E). All of the samples were put through flexural strength testing on the universal testing machine. One-way ANOVA and the Tukey-Kramer various correlation test (= 0.05) were used in SPSS for Windows to look at the facts.
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