| Autor: |
Reddy, V. A, Reddy, Vahini |
| Předmět: |
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| Zdroj: |
Guident; Jan2013, Vol. 6 Issue 2, p70-76, 6p |
| Abstrakt: |
An investigation was undertaken to find the effect of various disinfectant solutions on the surface hardness of acrylic denture base resins so as to minimise the cross infection control at the same time not compromising the physical properties of denture base resins. The effect of three disinfectant solutions 2% gluteraldehyde, 0.5% sodium hypochlorite and 0.4% chlorhexidine gluconate were investigated on two commercially available conventional heat cured acrylic denture base resin DPI-Heat cure and Trevalon - HI. Rectangular block specimens of DPI-Heat cure and Trevalon - HI were made according to standard dental laboratory procedure and recommended curing time. The specimens were polished, finished and stored in water bath at 370C for 6 weeks. The specimens were subjected to an immersion time of 0 (control), 30 min, 2hr, 10hr, 24hr, 48hr, 7 days and 14 days in three disinfectant solutions. The samples were then tested for surface hardness by using a zwick hardness tester. The data then obtained were analysed. It was shown that there was no significant effect on the surface hardness of DPI-Heat cure and Trevalon - HI specimen after immersion in any of the three disinfectant solutions for 24 hrs. But there was a significant reduction in surface hardness of both DPIHeat cure and Trevalon - HI after immersion for 7-14 days. Trevalon - HI produced less changes in surface hardness than DPIHeat cure after immersion for 7-14 days. Immersion of specimen for longer duration in chlorhexidine gluconate produced more changes in surface hardness than sodium hypochlorite and gluteraldehyde. Gluteraldehyde had the least effect on the surface hardness among the three disinfectant solution. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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