Evaluation of Surface Microhardness Following Chemical and Microwave Disinfection of Commercially Available Acrylic Resin Denture Teeth
| Autor: | NITASHA GANDHI, SMITHA DANIEL, SUSHANT BENJAMIN, NIRMAL KURIAN, VINAYA SUSAN VARGHESE |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Journal of Clinical and Diagnostic Research, Vol 11, Iss 5, Pp ZC87-ZC91 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2249-782X 0973-709X |
| DOI: | 10.7860/JCDR/2017/27587.9944 |
| Popis: | Introduction: Denture disinfection is an indispensable procedure for preventing cross contamination and the maintenance of a healthy oral mucosa in patients rehabilitated with removable dental prosthesis. Nevertheless, they are known to cause changes in the physical and mechanical properties of denture base resins and acrylic resin denture teeth following immersion of a denture in a suitable chemical disinfectant solution or by undergoing microwave irradiation. One such mechanical property indicator for artificial tooth materials is hardness. Aim: To assess the surface hardness of acrylic resin teeth of three different commercial brands (Ivoclar, Newace, Acryrock) following chemical (2% glutaraldehyde, 1% sodium hypochlorite) and microwave disinfections. Materials and Methods: Ten specimens of each of the three commercial brands were made for control and each simulated disinfection type and stored in distilled water at room temperature for 24 hours. After water storage, specimens were immersed in 2% glutaraldehyde and 1% sodium hypochlorite (one and three cycles) at room temperature for 10 minutes. Irradiation with microwave (one and three cycles) was done in domestic microwave for three minutes with the specimens immersed in 150 ml of distilled water. The specimens were stored in distilled water at room temperature for seven days after each disinfection cycle. Vickers hardness measurements were made using a hardness indenter under a load of 50 g force for 10 seconds. Data was subjected to repeated measure twoway ANOVA test and Tukey’s test. Results: There were statistically significant differences for the variables disinfection, tooth, and cycle (p |
| Databáze: | Directory of Open Access Journals |
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