Water Sorption of Thermoplastic and Conventionally Heat Cured Hollow Maxillary Obturator

Document Type : Original Article

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Department of Removable prosthodontics, Faculty of Dentistry, Minia University

Abstract

Objectives: The aim of this study was to assess and compare water sorption of thermoplastic versus conventional heat cured maxillary hollow obturator. Material and Methods: Ten heat cured maxillary hollow obturators (control group) were constructed and ten thermoplastic maxillary hollow obturators (test group) were constructed. Specimens were polished and dried in a desiccator until a constant mass was reached. Specimens were then immersed in distilled water at 37°C for seven days and weighed. the specimens were dried again until equilibrium was reached. Differences between the mean values in the two groups were analyzed using Student's t-test. Results: the water sorption mean value of control group was 3.44 (0.28) and mean value of test group was 1.35 (0.21). Acrylic group showed statistically significantly higher mean water sorption than Flex group. Conclusions: The thermoplastic obturators group showed lower water sorption rates than conventional heat cured resin obturator group. Thus, thermoplastic obturators are considered a viable treatment option for hemi maxillectomy cases slightly favorable than heat cured acrylic resin obturators regarding the ability of water sorption
 
 
 

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Minia Journal of Medical Research
Volume 32, Issue 1
January 2021
Pages 112-115

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