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Effect of immersion in sodium chloride solution during microwave disinfection on dimensional stability, water sorption, and water solubility of denture base acrylic resin | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 22, Issue 3, 2010, Pages 46-51 | ||
| Authors | ||
| Aseel M. Alkafaji; Rafah A. Ibrahem; ShorouqM. Abass | ||
| Abstract | ||
| ABSTRACTBackground: Microwave energy has been used as an alternative method for disinfection and sterilization of dentalprosthesis. This study evaluated the influence of immersion in NaCl solution, immersion in water, and in dry air duringmicrowave disinfection on dimensional stability, water sorption, and water solubility of hot cure, cold cure, and softacrylic resin.Materials and methods: Three types of acrylic resin denture base materials were used in this study: hot cure, coldcure, and soft acrylic resin material. This study was conducted to evaluate the affect of immersion in NaCl solution,immersion in water, and in dry air during microwave disinfection on dimensional stability, water sorption, &watersolubility of acrylic resin denture base. Forty-five rectangular specimens were used for testing dimensional stability,and twenty disks specimens for each type of material were made to test water sorption and water solubility.Results: results for dimensional stability revealed that all test groups was insignificantly (p>0.05) affected by differentmethods of microwave disinfection except HN and SW test groups which were significantly affect (p<0.05). For watersorption test, the results revealed that only cold cure acrylic resin showed a highly significant difference (p<0.01) forCW, and CD test group. And finally, for water solubility test show there was no significant difference (p>0.05) for alltest groups.Conclusion: Dimensional stability could be affected by immersion in NaCl solution when used for hot cure acrylicresin, while for soft acrylic resin it could be affected when immersed in water during microwave disinfection. Watersorption for cold cure acrylic resin significantly changed when immersed in water and when placed in dry air duringmicrowave disinfection.Keywords: acrylic resin, dimensional stability, water sorption, water solubility, microwave. (J Bagh Coll Dentistry2010;22(3):46-51). | ||
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