Swathi Sudhapalli1, Sruthikeerthi Sudhapalli2. 1. Reader, Department of Prosthodontics, College of Dental Science and Hospital Rau, Indore, India . 2. Private Practitioner, Hyderabad, India .
Abstract
INTRODUCTION: Soft liner materials, when used with ill fitting dentures, are constantly kept in a wet environment of either saliva or denture cleanser that affects their sorption and solubility. These inturn have detrimental effect on other properties. AIM: To evaluate the influence of different exposure times of a commonly used denture cleanser on sorption and solubility of four soft liners. MATERIALS AND METHODS: Metal disc was fabricated to make the mould space for soft liner samples. Four materials were used, long term and short term acrylic liners; long term and short term silicone liners. Each of these were divided into four groups: first control group- all liners were kept in artificial saliva for entire period of study. Second group- liners were immersed daily in cleanser for 1 hour and then transferred to artificial saliva for rest of the day. Similarly samples of third and fourth groups were immersed in cleanser for 4 and 8 hours respectively and transferred to artificial saliva. Sorption and solubility tests were conducted and statistical analysis done. STATISTICAL ANALYSIS: One-way ANOVA followed by Post-hoc Tukey's test for pair wise comparisons was done. Significance was set at the probability level of p < 0.05. RESULTS: Solubility values of all groups were higher than the quoted ADA specifications. CONCLUSION: Overall, silicones performed better than acrylics. Long term silicone was most stable. Short term acrylic was most unstable. The 8 hour immersion in denture cleanser caused significantly high sorption and solubility.
INTRODUCTION: Soft liner materials, when used with ill fitting dentures, are constantly kept in a wet environment of either saliva or denture cleanser that affects their sorption and solubility. These inturn have detrimental effect on other properties. AIM: To evaluate the influence of different exposure times of a commonly used denture cleanser on sorption and solubility of four soft liners. MATERIALS AND METHODS:Metal disc was fabricated to make the mould space for soft liner samples. Four materials were used, long term and short term acrylic liners; long term and short term silicone liners. Each of these were divided into four groups: first control group- all liners were kept in artificial saliva for entire period of study. Second group- liners were immersed daily in cleanser for 1 hour and then transferred to artificial saliva for rest of the day. Similarly samples of third and fourth groups were immersed in cleanser for 4 and 8 hours respectively and transferred to artificial saliva. Sorption and solubility tests were conducted and statistical analysis done. STATISTICAL ANALYSIS: One-way ANOVA followed by Post-hoc Tukey's test for pair wise comparisons was done. Significance was set at the probability level of p < 0.05. RESULTS: Solubility values of all groups were higher than the quoted ADA specifications. CONCLUSION: Overall, silicones performed better than acrylics. Long term silicone was most stable. Short term acrylic was most unstable. The 8 hour immersion in denture cleanser caused significantly high sorption and solubility.
Authors: Renata M C Rodrigues Garcia; Blanca T L Léon; Viviane B M Oliveira; Altair A Del Bel Cury Journal: J Prosthet Dent Date: 2003-05 Impact factor: 3.426
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