Effect of denture cleansers on surface hardness of resilient denture liners at various time intervals- an in vitro study
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PURPOSE. This study was aimed to determine the effect of two chemically distinct denture cleansers and water on the surface hardness of acrylic and silicone based soft denture liners at various time intervals. MATERIALS AND METHODS. Two commonly used commercial resilient liner material were selected based on their chemical composition (silicone- and acrylic-based soft liners) for this investigation. 120 cylindrical specimens were made of 15 mm × 10 mm dimensions (according to ASTM: D-2240-64T) in a custom made metal mold. All specimens were stored in artificial saliva throughout the study. Forty specimens were cleansed daily in 0.5% sodium hypochlorite solution; forty were cleansed in sodium perborate and remaining forty specimens were daily rinsed in water. Testing was done at 1 week, 1 month, 3 months and 6 months for surface hardness using a Shore A Durometer. A mean of 3 reading for each sample was subjected to one-way ANOVA, Post Hoc test and pair-t test for statistical analysis. P values of less than 0.05 were taken as statistically significant. RESULTS. Surface hardness of all the samples was significantly higher after a period of 6 months irrespective of the cleansing treatment. Minor changes were observed between control, sodium hypochlorite and sodium perborate groups with time. Greater change was observed in surface hardness of acrylic-based soft denture liners as compared to siliconebased soft liners for all groups, as time progressed. CONCLUSION. Silicone-based soft denture liners performed significantly better in all cleansing treatments than acrylic-based soft denture liners
Abstract
PURPOSE. This study was aimed to determine the effect of two chemically distinct denture cleansers and water on the surface hardness of acrylic and silicone based soft denture liners at various time intervals. MATERIALS AND METHODS. Two commonly used commercial resilient liner material were selected based on their chemical composition (silicone- and acrylic-based soft liners) for this investigation. 120 cylindrical specimens were made of 15 mm × 10 mm dimensions (according to ASTM: D-2240-64T) in a custom made metal mold. All specimens were stored in artificial saliva throughout the study. Forty specimens were cleansed daily in 0.5% sodium hypochlorite solution; forty were cleansed in sodium perborate and remaining forty specimens were daily rinsed in water. Testing was done at 1 week, 1 month, 3 months and 6 months for surface hardness using a Shore A Durometer. A mean of 3 reading for each sample was subjected to one-way ANOVA, Post Hoc test and pair-t test for statistical analysis. P values of less than 0.05 were taken as statistically significant. RESULTS. Surface hardness of all the samples was significantly higher after a period of 6 months irrespective of the cleansing treatment. Minor changes were observed between control, sodium hypochlorite and sodium perborate groups with time. Greater change was observed in surface hardness of acrylic-based soft denture liners as compared to siliconebased soft liners for all groups, as time progressed. CONCLUSION. Silicone-based soft denture liners performed significantly better in all cleansing treatments than acrylic-based soft denture liners
참고문헌 (19)
- Brożek R, "Effect of denture cleansers on chemical and mechanical behavior of selected soft lining materials", Dent Mater, 27, pp.281~290 (2011)
- Kasuga Y, "Basic evaluation on physical properties of experimental fluorinated soft lining materials", Dent Mater J, 30, pp.45~51 (2011)
- Dootz ER, "Physical property comparison of 11 soft denture lining materials as a function of accelerated aging", J Prosthet Dent, 69, pp.114~119 (1993)
- Dent Mater J, "Compatibility of tissue conditioners and denture cleansers:influence on surface conditions", Dent Mater J, 29, pp.446~453 (2010)
- Mese A, "Effect of storage duration on the hardness and tensile bond strength of silicone- and acrylic resinbased resilient denture liners to a processed denture base acrylic resin", J Prosthet Dent, 99, pp.153~159 (2008)
- Machado AL, "Effect of microwave disinfection on the hardness and adhesion of two resilient liners", J Prosthet Dent, 94, pp.183~189 (2005)
- Mese A, "Bond strength of soft denture liners following im-mersion of denture cleanser", Biotechnol Biotechnol Equip, 20, pp.184~191 (2006)
- Garcia RM, "Effect of a denture cleanser on weight, surface roughness, and tensile bond strength of two resilient denture liners", J Prosthet Dent, 89, pp.489~494 (2003)
- Budtz-Jørgensen E, "Materials and methods for cleaning dentures", J Prosthet Dent, 42, pp.619~623 (1979)
- Zarb GA, "Prosthodontic Treatment for Edentulous Patients: Complete Dentures and Implant-Supported Prostheses", pp.198~202 (2003), Mosby
- Leite VM, "Effect of ageing and immersion in different beverages on properties of denture lining materials", J Appl Oral Sci, 18, pp.372~378 (2010)
- El-Hadary A, "Comparative study of water sorption, solubility, and tensile bond strength of two soft lining materials", J Prosthet Dent, 83, pp.356~361 (2000)
- Hermann C, "The effect of aging by thermal cycling and mechanical brushing on resilient denture liner hardness and roughness", J Prosthodont, 17, pp.318~322 (2008)
- Saraç D, "The effectiveness of denture cleansers on soft denture liners colored by food colorant solutions", J Prosthodont, 16, pp.185~191 (2007)
- de Freitas Fernandes FS, "Efficacy of denture cleansers on Candida spp. biofilm formed on polyamide and polymethyl methacrylate resins", J Prosthet Dent, 105, pp.51~58 (2011)
- Ferreira MA, "Rodrigues de Vasconcelos LM, Rodrigues-Garcia RC, Del Bel Cury AA. Efficacy of denture cleansers on denture liners contaminated with Candida species", Clin Oral Investig, 13, pp.237~242 (2009)
- Goll G, "The effect of denture cleansers on temporary soft liners", J Prosthet Dent, 50, pp.466~472 (1983)
- Mante FK, "In vitro changes in hardness of sealed resilient lining materials on immersion in various fluids", J Prosthodont, 17, pp.384~391 (2008)
- Mancuso DN, "Effect of thermocycling on hardness, absorption, solubility and colour change of soft liners", Gerodontology, 29, pp.215~219 (2012)